Wegener used fossil evidence to support the theory of continental drift.
Fossils of these creatures are found today in faraway countries. The trenches and rock deposits left by ancient glaciers are now found very close to the equator on various continents. Continental drift over millions of years was caused by plate tectonics. Plate tectonics also explained how the movement of plates causes volcanoes and earthquakes.
Interplate wear at transforming plate boundaries results in shallow earthquakes, large lateral rock faults, and broad crustal deformation zones. Alfred Wegener became interested in the possibility of continental drift after realizing in 1910 that the Earth's continents resembled pieces of a jigsaw puzzle. For example, he noticed how the coasts of South America were correctly aligned with those of Northwest Africa.
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The area under the nail plate typically has a ____ appearance in the area that extends from the lunula to the area just before the free edge of the nail.A. pinkishB. whitishC. bluishD. grayish
From the lunula to the region right before the free edge of the nail, the area under the Nail plate often appears pale bluish.
What is the name of the area beneath the nail?The matrix is the name given to this region. A luminous, half-moon-shaped spot can be seen at the base of a nail when you gaze at it, shining through the nail plate. The matrix's viewable portion is this. Due to its shape, it is known as the lunula (Latin for "little moon").
What portion of the nail plate protrudes past the nail bed?The nail plate turns into the free edge when it surpasses the hyponychium. It's crucial to have a free edge since it makes sure the entire nail bed is protected and coated. The cuticle is a strip of dried, hardened skin that is located at the base of a nail, above the eponychium.
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genetic variation in a group of organisms enables some organisms to survive better than others in the environment in which they live. organisms of even a small population can differ strikingly in terms of how well suited they are for life in a certain environment. an example would be moths of the same species with different color wings. moths with wings similar to the color of tree bark are better able to camouflage themselves than moths of a different color. as a result, the tree-colored moths are more likely to survive, reproduce, and pass on their genes. this process is called natural selection, and it is the main force that drives evolution.
Genetic Diversity, Genetic variation is the existence of distinct gene sequences among various members of a species. Natural selection, one of the main factors guiding the evolution of life, is made possible by it.
Geographic variation refers to genetic variations among populations from various regions. Genetic drift or natural selection are to blame for this. The percentage of polymorphic gene loci or the proportion of heterozygous people at a given gene locus are two typical ways to quantify genetic diversity within a population.
Genetic diversity in populations is maintained by a number of factors. In populations of diploid organisms, potentially detrimental recessive alleles can be protected from selection by heterozygous individuals (recessive alleles are only expressed in the less common homozygous individuals).
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Is ATP an organelle?.
ATP, the energy currency of the cell, is made in an organelle called the "mitochondrial.
Mitochondria are tiny organelles of inner cells which are involved in releasing strength from meals. This procedure is called cellular breathing. it is because of this that mitochondria are frequently known as the powerhouses of the cell.
All living cells contain ribosomes, tiny organelles composed of approximately 60 percent ribosomal RNA (rRNA) and forty percent protein. however, though they're commonly described as organelles, it is important to word that ribosomes are not bound by using a membrane and are plenty smaller than other organelles.
The non-membrane certain organelles, additionally known as large biomolecular complexes, are massive assemblies of macromolecules that carry out unique and specialized functions, however, they lack membrane obstacles. lots of these are referred to as "proteinaceous organelles" as their foremost shape is manufactured from proteins.
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Environmental conditions and the presence of ______ help a cell in the G1 phase to accumulate changes that might cause it to progress through the rest of the cell cycle.
signaling molecules
A cell in the G1 phase can collect modifications that could allow it to advance through the rest of the cell cycle with the aid of environmental factors and the presence of signaling molecules.
What takes place in the cell cycle's G1 phase?The majority of cellular development occurs in G1; cells increase in size and produce the proteins and organelles necessary for DNA synthesis.Here, along with proteins and RNAs, the centromere and other centrosome components are created in particular.
What is required for the cell cycle to transition from the G1 phase to the S phase?Growth-dependent cyclin-dependent kinase (CDK) activity encourages DNA replication and starts the transition from G1 to S phase during G1 phase. When CDK is activated, a positive feedback loop starts.
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Which of these DNA polymerases have been assigned the major role of nucleotide incorporation during replication?
A) DNA polymerase II
B) DNA polymerase III
C) DNA polymerase IV
D) DNA polymerase V
B
The DNA polymerases which are assigned the major role of nucleotide incorporation during replication is DNA polymerase III, which means that option B is the right answer.
DNA Polymerase III is the enzyme primarily responsible for synthesis of DNA. It connects to a new nucleotide fragment with nitrogenous bases and thus assembles a new DNA over the existing one. DNA Replication is the process by which a single molecule of DNA is used to produce 2 identical copies of the same DNA molecule. Firstly, the double helix structure splits into two and then the template DNA strands formed by RNA are merged and assembled together to give rise to new DNA strands.
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the idea of neurodiversity is consistent with 's notion of nine distinct intelligences.
The idea of neurodiversity is consistent with 's notion of nine distinct intelligences.
What is neurodiversity?Variations in the human brain and cognition, such as in sociability, learning, attention, mood, and other mental functions, are referred to as neurodiversity, neurodivergence, or neurovariance.
The concept of neurodiversity outlines how people perceive and engage with their environment in various ways.
What is intelligences?Numerous characteristics, including abstraction, logic, comprehension, self-awareness, learning, emotional knowledge, reasoning, planning, creativity, critical thinking, and problem-solving, have all been used to characterize intelligence.
Hence, The idea of neurodiversity is consistent with 's notion of nine distinct intelligences.
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: In order to complete each sentence, click and drag each word or phrase from the left into the appropriate blank on the right. Then click and drag each sentence arranging them in order to accurately describe the process. Drag the text blocks below into their correct order. oogonia Oogonia multiply until the fifth month. Within six months after birth, each will mitosis transform into a primary oocyte In adolescence, FSH stimulates primary oocytes to complete meiosis I, resulting in a polar body and a atresia OOP Oogenesis begins before a girl is bom with the formation of from germ cells. secondary oocyte If the secondary oocyte is ovulated and fertilized, it will undergo and be ready to donate its DNA to an offspring. meiosis II follicle Most of these will degenerate, a process called
If the secondary oocyte is ovulated and fertilized, it will undergo and be ready to donate its DNA to an offspring. meiosis II follicle Most of these will degenerate, a process called oogenesis.
what is the structure of DNA ?
DNA is referred as deoxy ribo nucleic acid, which is a nucleic acid, with a left handed double helical structure, are the basic unit of every living cell
It carry all genetic material and made up of nitrogenous base, sugar mainly pentose sugar and phosphate.
Nitrogenous base include purine and pyrimidine such as adenine, guanine, thiamine, cytosine;
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Why is it accurate to claim that the legume-bacteria mutualism described in the text is contingent?.
As a result of this symbiosis, nodules develop on the roots of the plant, where the bacteria can transform atmospheric nitrogen into ammonia that the plant can use.
What exactly are legume-bacteria?Rhizobia, a type of nitrogen-fixing soil bacterium symbiotically with legumes. The final result of this symbiosis is the development of nodules on the roots of the plants, where the bacteria can convert atmospheric nitrogen into ammonia that the plants may utilise.
Why do bacteria benefit legumes?Leguminous plants that are colonized by these bacteria develop a series of new organs termed "nodules" on their roots as a result. In such nodules, bacteria fix nitrogen and transform it into ammonia, a substance essential for plant growth .
What are legumes and rhizobium?Rhizobia are soil microorganisms that can work with legume plants to produce root nodules that are favorable to bacterial nitrogen fixation.. Legumes enable the growth of extremely large Rhizobial populations close to their roots.
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n fish gills, water moves in one direction past thin, membranous plates known as . multiple choice question.
In fish gills, water moves in one direction past thin, membranous plates known as lamellae
In fish gills, water moves in one direction past thin, membranous plates known as: D. lamellae.
What is an amphibian?An amphibian can be defined as living organisms (animals) that can survive and live both on land and inside the water. Therefore, amphibians can walk on land and they also have limbs to swim, but they do not have gills like fishes in order to enable them breath in water.
This ultimately implies that, amphibians can only breath in air directly through the use of their lungs. Furthermore, a lamella simply refers to a thin layer, membranous plate (plate of tissue) which allows water to move unidirectionally (one direction) within the gills of fishes.
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Complete Question:
In fish gills, water moves in one direction past thin, membranous plates known as ______.
trachea
branchial
spiracles
lamellae
What are the 3 types of drinks?.
The 3 types of drinks are
WineSpiritsBeerWith origins between 7000 and 6600 BCE, wine is regarded as the world's most ancient alcoholic beverage. Crushed grapes are fermented with yeast to make wine. Grape sugars are transformed by the yeast into ethanol, which is then stored to be aged and bottled.
One of the most consumed alcoholic beverages worldwide is regarded as beer. Brewing, the process of creating beer, typically involves fermenting barley or other cereal grains like wheat, rye, oats, rice, corn, or sorghum. Beer has an ABV that can range from 2.5% to 15%, however a typical drink typically has a 4% to 6% ABV.
Hence, wine, beer and spirit are popular drinks.
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What are the examples of textual aids?.
Some examples of textual aids are those words being highlighted, bolded, italicized, and adding charts, graphs, diagrams, maps, graphical outlines or images that gives general idea.
Students and facilitators, teacher or instructor. use textual aids activities inside the classroom.
Some examples of textual aids are those words being highlighted, bolded, italicized, and adding charts, graphs, diagrams, maps.
Or we can say that textual Aids are defined as the educational instruments, tools, or materials that provide support and facilitate understanding of texts.
These are- graphical outlines or images that gives general idea. Most beneficial organizer since it can be applied to all subject areas.
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the shcematic above shows a typical cell cycle progression. the star marks the position of a vital stage in cell cycle control
Above is a schematic representation of the cell cycle process. The diamond denotes an essential milestone in cell cycle regulation.
What transpires while the cell cycle continues?A cell grows (gap 1, or G1), copies its DNA (synthesis, or S), prepares to divide (gap 2, or G2), and separates (gap 4, or S) during the four stages of the cell cycle (mitosis, or M, stage).
What three stages of the cell cycle are there?Cell cycle checkpoints prevent genetic errors from transferring to daughter cells. The three primary cell-cycle checkpoints are the G1/S checkpoint, the G2/M checkpoint, and the spindle assembly checkpoint (SAC).
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categorize the conditions listed as shifting the oxyhemoglobin dissociation curve to the le ft or right.
The oxygen dissociation curve can be shifted right or left by a variety of factors.
Under what conditions oxyhemoglobin dissociation curve shifts to the right?The oxyhemoglobin curve is shifted to the right when there is high PCO2, low PO2, high H+ concentration (low pH) and high temperature increased concentration of BPG in red blood cells favor's formation of the T (taut or tense), low-affinity state of hemoglobin and so the oxygen-binding curve will shift to the right.
What causes right and left shift in oxyhemoglobin dissociation curve?Oxygen unloading is favored at higher temperatures which will cause a rightward shift. On the other hand, lower temperatures will cause a leftward shift in the dissociation curve.
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why was counting the number of bubbles an appropriate way to measure the rate of cellular respiration occurring within the yeast?
Both aerobic and anaerobic activities result in the production of carbon dioxide. Given that yeast only emits CO2 during fermentation , it is safe to assume that cellular respiration was occurring in yeast.
Even in the presence of oxygen, yeast generally exhibits a wide range of metabolic preferences with regard to its mode of respiration (aerobic or anaerobic). Particularly Saccharomyces yeast has been seen to engage fermentative respiration(fermentation ) to variable degrees even in aerobic settings.
Cellular respiration and fermentation are also processes that yeast, a tiny unicellular fungus, is capable of. When yeast cells are maintained in an environment that is anaerobic (i.e., devoid of oxygen), they begin to ferment alcohol in order to produce useful energy from food.
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What do these structures indicate about the evolution of three organisms?.
These structures indicate about the evolution of three organisms, they share a common ancestor.
An organism is any biological, living system that works as a separate entity. The term "organism" originates from the Ancient Greek words "v" (órganon), which means "instrument, implement, tool," and "-ismós," which means "-ism." Cells make up every living thing (cell theory). According to taxonomy, organisms can be categorized as either unicellular microorganisms like protists, bacteria, and archaea, or multicellular animals, plants, and fungi All different kinds of creatures have some degree of stimulus response, the ability to reproduce, grow, and develop. Multicellular organisms that distinguish specialized tissues and organs throughout development include vascular plants, squids, tetrapods, mushrooms, and beetles. Eukaryotic or prokaryotic cells can make up a single-celled creature. Both bacteria and archaea are distinct domains that belong to prokaryotes. A membrane-bound cell nucleus and additional membrane-bound compartments known as organelles (such as mitochondria in animals and plants and plastids in plants and algae) are features that distinguish eukaryotic creatures from other types of life.
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chloroplasts: chloroplasts: play a vital role in cellular respiration. play a central role in glucose production. produce atp for the cell. are present in all eukaryotes. are the major site of protein synthesis in the cell.
chloroplasts play a central role in glucose production. During the process of photosynthesis in the presence of sunlight plants produces sugar
Chloroplasts are chlorophyll-containing organelles found within plant cells; they are necessary for Earth life since photosynthesis occurs in chloroplasts. Chloroplasts are plant cell organelles which use photosynthesis energies to transform energy from the sun into relatively stable chemical energy. They support life on the planet by doing so. Chloroplast functions include light energy absorption and conversion into biological energy, the production of NAPDH2 and the evolution of oxygen via the process of photolysis of water, and the production of ATP via photophosphorylation.
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a savanna is a tropical grassland with scattered drought-tolerant trees. group of answer choices true false
A savanna being a tropical grassland with scattered drought-tolerant trees is referred to as a true statement.
What is a Savanna?This is referred to as a mixed woodland-grassland ecosystem and it is characterized by the scattering of different types of trees in the area.
It also contains a tropical grassland with scattered drought-tolerant trees which makes it maximize its water usage in other to perform different types of activities and ensured its survival as a result of the area having a low amount of precipitation which is therefore the reason why true was chosen as the correct choice in this scenario.
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2. what is the normal role of cholesterol in the body? do you need cholesterol? (hint: remember cell membranes.)
the condition in which pathogens enter, establish, and multiply in the human host is referred to as a(n) .
Infection is the condition in which pathogens enter, establish, and multiply in the human host.
The attack and duplication of microorganisms to a degree microorganisms, viruses, and parasites that are not usually present inside the crowd. An infection can cause no syndromes and be subclinical, or it may cause syndromes and be clinically obvious. Infection Prevention and Control is the principal in feeding, it protects two together patients and a healthcare trader from affliction.
Without controlling the spread of Infection, nursing homes would enhance danger in consideration of visits that would design huge healthcare questions across the organization. A pathogen in the most aged and fullest sense is some organism or power that can produce ailment. A pathogen concedes the possibility again to be referred to as a spreading agent, or plainly a beginning. The term bacterium happened into use in the 1880s.
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What are some adaptations of the kangaroo rat that allow it to survive in the desert biome? how about the saguaro cactus? (site 1)
They can survive without ever drinking water, obtaining needed moisture from their seed diet. They have excellent hearing and can even detect the quiet sound of an approaching owl.
Kangaroo rats get all the water they need from their food because they eat carbohydrate-rich seeds, which produce water when metabolized. Their kidneys are very efficient and produce urine five times more concentrated than human urine. They are able to excrete waste without losing much water.
(i) Desert plants have a thick cuticle on the leaf surface and sunken stomata to maximize water loss. (ii) Desert plants have a CAM pathway that allows their stomata to remain closed overnight. (iii) Kangaroo rats satisfy their water needs by internal protein oxidation.
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. the blank tissue system is the tissue system that forms a layer of outer protection for the plant (analogous to human skin).target 1 of 8 2. the blank tissue system is the tissue system that forms a long-distance transportation system for the plant (analagous to the human circulatory system).
The tissue system that forms a layer of external protection for the plant is called the dermal tissue system (analogous to human skin).
The tissue system that serves as the plant's long-distance transportation system is called the vascular tissue system (analagous to the human circulatory system).
Is the tissue system that gives the plant its outer layer of defense?The outer, protective layer of the main plant body is the dermal tissue system, also known as the epidermis (the roots, stems, leaves, flowers, fruits, and seeds). The epidermis typically has one cell layer and no chloroplasts in its cells.
Plants have a vast network of xylem and phloem-based conduits. This more closely resembles the circulatory system that carries blood throughout the body of a human. The xylem and phloem tissues are distributed throughout the plant, much like the circulatory system in humans.
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when a trait is sex-linked recessive, how does that affect the likelihood of the phenotype being expressed in a hemizygous individual versus an individual who is homozygous or heterozygous
In case of sex-linked recessive trait, the hemizygous individual will always show the phenotype and the trait is more common in hemizygous individuals i.e. males. In case of heterozygous individuals which can be females they carry the allele as a carrier and do not express any phenotype. The homozygous recessive females will always display the phenotype.
Sex-linked recessive is the trait where the gene for any mutation or disease is present on the X-chromosomes. It can only be expressed when both the X-chromosome contain the defective allele. However males being hemizygous can express the phenotype.
Heterozygous is the condition where the trait is present in any one of the homologous chromosomes. Any trait during heterozygous state will be expressed in dominant condition but not in recessive condition.
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What are some strategies one may use to reduce exposure to pesticides?.
A few techniques one can also use to reduce publicity to pesticides are: Trimming fat from meat and skin from chicken and fish due to the fact some pesticide residues collect in fats. selecting a ramification OF ingredients: eat a diffusion of meals, from a variety of assets.
This may provide you with a higher mix of nutrients and decrease your likelihood of publicity to an unmarried pesticide.
Pesticides can purpose short-time periods of adverse health consequences, known as acute outcomes, as well as chronic negative results that can arise months or years after exposure. A pesticide is any substance used to kill, repel, or control sure forms of plant or animal life that are considered to be pests.
Examples of unique artificial chemical insecticides are glyphosate, Acephate, Deet, Propoxur, Metaldehyde, Boric Acid, Diazinon, Dursban, DDT, Malathion, and many others.
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which ventricles are divided by the septum pellucidum? view available hint(s)for part a which ventricles are divided by the septum pellucidum? lateral ventricles lateral and third ventricle first and second ventricles third and fourth ventricles
Lateral ventricles are divided by the septum pellucidum
Brief anatomy of lateral ventricleWithin the cerebrum are cavities known as the lateral ventricles. The septum pellucidum divides the right and left lateral ventricles midway. The cerebrospinal fluid (CSF), which cushions the brain, fills the spaces that make up the ventricular system of the brain.Each cerebral hemisphere contains a C-shaped hollow known as the lateral ventricle. Ependyma lines the inside, which is filled with CSF. It has a 7 to 10 ml capacity. The septum pellucidum, a thin vertical sheet of nervous tissue that divides the two lateral ventricles, is surrounded by ependyma on both sides. It connects to the third ventricle via the Monro foramen interventricularis. The anterior horn, posterior horn, and inferior horn are the three horns (cornua) that each lateral ventricle is made up of. It appears triangular anteriorly and rectangular posteriorly on the coronal section.
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Phagocytosis eliminates pathogens that have evaded the first line of defense. The process can be broken down into six main steps. Enhancing any of those steps could lead to more efficient bacterial elimination during infection.Arrange the following steps in order to describe the chronological order of the events in phagocytosis. chemotaxis, adherence, ingestion, maturation, killing, elimination
Arranging these 6 steps in order to describe the chronological order of the events in phagocytosis- Chemotaxis, adherence, ingestion, maturation, killing and elimination.
Phagocytosis eliminates pathogens that have evaded Maturation,the first line of defense in our immune system.
The process can be simplified into six main steps. Enhancing any of those steps could lead to killing more efficient bacterial elimination during infection. Arranging these 6 steps in order to describe the chronological order of the events in phagocytosis-
1) Chemotaxis - In this process phagocyte is attracted or called towards infection .
2) Adherence- means phagocyte attaches to microbe.
3) Ingestion- microbe is engulfed by phagocyte.
4) Maturation- “matures” through a series of increasingly acidified membrane-bound structures called phagosomes and formation of phagolysosome occur.
5) Killing- digestive chemicals like toxic oxygen compounds and H+ ions creating harsh pH, kill the microbe.
6) Elimination- phagocyte is excretes microbes remnants.
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with only 7.3 million mi 2 of primary forests remaining worldwide, 23,000 mi 2 of these forests continue to be cut on an annual basis. discuss two major environmental concerns with this continual loss of primary forest land.
Forest deterioration and deforestation are the two major environmental concerns with this continual loss of primary forest land.
Why there is continuous forest loss?Forests are home to more than 75% of all land-based life. Forests are crucial to halting climate change because they act as a carbon sink, absorbing carbon dioxide that would otherwise be released into the atmosphere and cause a continuous change in weather patterns. The threats include forest deterioration and deforestation. Illegal logging is the main cause of forest degradation, while agriculture is the main cause of deforestation (although poorly planned infrastructure is also evolving into a substantial risk factor). Deforestation in tropical rain forests is particularly concerning because they are the natural habitat for much of the world's species. For instance, over the past 50 years, the Amazon has lost 17% of its forest due mostly to forest conversion for cattle grazing, highways etc.
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What are 3 factors that impact on food safety?.
Food storage, managing time and temperature, and preventing food contamination are three essential aspects of food safety that must be carefully handled and instructed on.
To decrease cases of food-borne illness in Australia, food safety is crucial. In Australia, there are over four million occurrences of food borne disease each year, and many of these cases are related to problems with food safety. Food storage, controlling time and temperature, and preventing food contamination are three essential aspects of food safety that must be properly managed and covered in training. Particularly now that food service is evolving as a result of the COVID-19 pandemic, food enterprises must comprehend these aspects and their significance in ensuring food safety.
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The conversion of an action potential (AP) generated by a motor neuron to contraction of skeletal muscle fiber is called excitation-contraction coupling. This activity will test your understanding of the sequence of events that occur during excitation-contraction coupling.
Place the events that occur during excitation-contraction coupling in the correct order from left to right.
Hints
AP propagates along sarcolemma
AP travels down T tubules to triads Voltage-sensitive proteins
open Ca2+ channels
Sarcoplasmic reticulum releases Ca2+
Ca2+ levels in sarcoplasm increase
Recall from the video that a single motor neuron can conduct action potentials to several skeletal muscle fibers within a muscle. Excitation-contraction coupling converts these action potentials in a muscle fiber to a contraction. As muscle fibers contract, the entire muscle shortens and pulls the tendons on either end of the muscle, producing muscle tension.
The events that occur during excitation-contraction coupling in the correct order from left to right are as: AP propagates along sarcolemma, AP travels down T tubules to triads, Voltage-sensitive proteins open Ca⁺² channels, Sarcoplasmic reticulum releases Ca⁺², Ca⁺² levels in sarcoplasm increase
The term "excitation-contraction" refers to the chain of events that connects the excitation of the sarcolemma. The sarcolemma is the membrane that connects the muscle cells, to the contraction of the muscles. Although the excitation-contraction coupling in the myocardium is, in many respects, comparable to that in skeletal muscle and smooth muscle.
The events that occur during excitation-contraction coupling in the correct order from left to right are as:
AP propagates along sarcolemmaAP travels down T tubules to triadsVoltage-sensitive proteins open Ca⁺² channelsSarcoplasmic reticulum releases Ca⁺²Ca⁺² levels in sarcoplasm increaseYou can also learn about excitation-contraction coupling from the following question:
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During meiosis chromosomes will split into daughter cells randomly this is called.
Answer: It is called Independent Assortment.
Independent assortment is when genes independently separate from one another when reproductive cells develop.
the genetic differences between bacteria and archaea translate into a variety of structural and functional adaptations. what feature is similar in both domains?
Both archaea and bacteria are prokaryotes, which means they lack membrane-bound organelles and a nucleus. Microbes are incredibly little, single-celled creatures that are invisible to the human eye.
Archaea and bacteria resemble each other in size and shape when we examine them under a microscope. As rods, cones, plates, and coils, they are present.
Using whatever energy and carbon sources are available, prokaryotes have been and can still survive in any environment. Prokaryotes have a variety of roles on Earth, including digesting dead species, flourishing inside living things like people, and participating in nutrient cycles like the nitrogen and carbon cycles. Both bacteria and archaea are prokaryotes, which include structures called flagella that function as propellers for the organisms as they move through their surroundings. In Eukarya, which also includes all other animals, plants, fungi, and single-celled protists, DNA is contained in nuclei that are separate from the rest of the cell. Both are single-celled microorganisms that lack nuclei. The fossil record shows that prokaryotes were the first living things.
The complete question is:
The genetic differences between bacteria and archaea translate into a variety of structural and functional adaptations. what feature is similar in both domains?
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