A dog whistle can be heard by dogs but not by humans. this whistle takes advantage of a characteristic of sensory systems known as:_______

Answers

Answer 1

Answer:the absolute threshold

Explanation:

Answer 2

A dog whistle can be heard by dogs but not by humans. This sound of whistle takes the advantage of a characteristic of sensory systems which is known as absolute threshold.

What is Sensory system?

A dog whistle is a type of whistle which emits the sound in the ultrasonic sound range. Humans cannot hear the range of ultrasonic sound but some of the other animals can, such as dogs and domestic cats, and this ability of animals is used in their training.

An absolute threshold is the least amount of stimulation which is needed for a person to detect the stimulus 50% of the time. This ability can be applied to all the senses such as: The minimum intensity of light we can see. Similarly, the ultrasonic range of sound is not audible to humans.

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Related Questions

The first step in dna isolation is called ________. it refers to the process of releasing dna from the cells.

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The first step in dna isolation is called Homogenization.

In research, it is routine practise to isolate and purify DNA. The material must be homogenised in order to isolate DNA. The homogenization of glass beads or tissue with a mortar and pestle is a common method for doing this.

The first of these procedures entails pulverising the DNA with a mortar and pestle after adding liquid nitrogen. In order to break up the tissue, add the samples to tubes containing glass beads and quickly shake or vibrate the tube. Both approaches run the risk of severing the nucleic acid, especially the biggest fragments.

Therefore, The first step in dna isolation is called Homogenization

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What is bioenergetics?
a. the study of weight loss
b. the study of metabolism during exercise
c. the study of the ways in which food is turned into energy
d. the study of aerobic metabolism

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I’m guessing it’s c, although I’m not a 100% sure, I do feel like this is the best answer.
Hope it helps!

What activated carriers, and how many of each, are produced during the citric acid cycle?

Answers

NADH, GTP, FADH2 are the activated carriers which are produced during the citric acid cycle.

What are activated carriers?

A small molecule that has a chemical group attached to it through a high-energy linkage and can donate energy or the chemical group in a variety of chemical processes.

How these activated carriers are produced in Kreb's cycle?The inner mitochondrial membrane's electron-transport chain receives high-energy electron contributions from NADH and FADH2. The activated nucleoside triphosphate GTP, which is closely similar to ATP, is also produced by the citric acid cycle.Electrons from the combustion of carbs, lipids, and other nutrients during glycolysis and the citric acid cycle are used to power the flow of ATP production. These "high-energy" electrons are produced by activated carriers produced during these two types of catabolic events, with the citric acid cycle operating in the mitochondrial matrix producing the majority of these activated carriers. The oxidation of molecules taken from food is finished by the citric acid cycle. The activated carriers NADH and FADH2 store some of the energy produced by this oxidation in the form of high-energy electrons. The inner mitochondrial membrane's electron-transport chain can then receive electrons from these two activated carriers.

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Select the correct answer from each drop-down menu. is an element found in all organic molecules. during respiration, animals excrete it as a gas known as .

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carbon is an element found in all organic molecules. during respiration, animals excrete it as a gas known as carbon dioxide.

During respiration, all animals exhale carbon dioxide. Carbon dioxide is a byproduct of respiration; it is harmful if it remains in the body for an extended period of time and must be excreted. Instead of excreting carbon dioxide, plants use it to produce glucose and oxygen, which are then used by animals.

What makes carbon a good Atom for building with?

Carbon has a remarkable ability to bind to a wide range of other elements. Carbon provides four electrons for the formation of covalent chemical bonds, allowing carbon atoms to form numerous stable bonds with other small atoms such as hydrogen, oxygen, and nitrogen.

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Determine if the following statement is true or false and why. “Primary and Secondary Consumers lose about 30% of the energy they absorb from food as heat.” A. True B. False, it should read “Primary Consumers lose about 5% of the energy they absorb from food as heat, while Secondary Consumers lose 30% as heat.” C. False, it should read “Only Secondary Consumers lose about 30% of the energy they absorb from food as heat.” D. False, it should read “Primary and Secondary Consumers lose about 5% of the energy they absorb from food as heat.”

Answers

The following statement is False. There is a constant flow of energy takes place from plants to plant eating animals to flash eating animals in the form of food and 90% of energy is lost as heat .

Hence, Option B is correct.

What is 10 % Law ?

Lindemann in 1942 proposed the 10% law of energy flow in ecosystem. According to 10% law if the net primary productivity is taken to be 100% in producers ( first trophic level ) then only 10% of potential energy of plant material is actually assimilated by herbivores as food  .during this act  by herbivores 90% of energy is lost as heat (thermal heat ) to the environment .

Similarly only 1% of the potential energy of primary consumers is assimilated by carnivores ( secondary consumers ) and the rest 90% of energy of carnivores  is lost as heat to the environment . Thus, during energy flow in ecosystem the energy fixed in one level is only 10% of its previous level and 90% of energy is lost as heat in each trophic level.

Thus it it concluded that there is a constant flow of energy takes place from plants to plant eating animals to flash eating animals in the form of food and 90% of energy is lost as heat .

Hence, Option B is correct.

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Because one original strand of the double-stranded helix is found in each daughter cell, the replication process is called.

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Because one original strand of the double-stranded helix is found in each daughter cell, the replication process is called semiconservative replication.

What is semiconservative replication?

Before dividing, a cell copies its DNA through the replication process. For instance, before going through mitosis, each parent cell in a human must duplicate all six billion base pairs of its DNA.

Semiconservative replication is the technique used to reproduce DNA. Every strand serves as a model for a fresh double helix. DNA replication as it is now understood, where each double-stranded molecule is made up of one parental strand and one newly polymerized strand.

Every new DNA double helix would be a hybrid after one replication cycle made up of one strand of previously synthesized DNA coupled to another, according to the semiconservative model. The hybrids would then split during the second round of replication, and each strand would partner with a freshly created strand. The remaining half of the new DNA double helices would be entirely new, leaving only half of them to be hybrids. So there would be fewer hybrids and more entirely new double helices after each round of replication.

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Compare and contrast the structure & functions of mitochondria & chloroplast

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Utilizing oxygen and nutrition, the mitochondria produce ATP, which serves as the cell's energy source. In a plant cell, photosynthesis takes place in the chloroplast.

Plant cells contain both the chloroplast and the mitochondrion, but animal cells only have the mitochondria. The purpose of mitochondria and chloroplasts is to produce energy for the cells in which they are found. Both types of organelles have an energy generation, or how inner and outer membrane as part of their structure. they change cellular energy into a certain form before the cell uses it, which is the fundamental commonality between mitochondria and chloroplast. 2. Chloroplast and mitochondrial DNA and RNA are nearly identical. Each DNA molecule is round.

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Discuss how temperature and amount of precipitation can affect the type of plants and animals found in the deciduous biome.

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Climate affects the type of plants and animals found in the deciduous biome. The high temperatures and rain create a warm, damp environment that insects enjoy living in. Many kinds of plants, animals, and insects have all evolved to suit the climate. This variety of creatures is what makes deciduous biome unique.

What types of plants and animals are found in deciduous biome?Calm deciduous timberlands are found within the mid-latitude zones which implies that they are found between the polar locales and the tropics. The deciduous timberland locales are uncovered to warm and cold discuss masses, which cause this range to have four seasons. The temperature changes broadly from season to season with cold winters and hot, damp summers. The normal annually temperature is approximately 10°C. The regions in which deciduous timberlands are found get almost 750 to 1,500 mm of precipitation spread decently evenly throughout the year. During the drop, trees change color and after that lose their takes off. Typically in arrangement for the winter season. Since it gets so cold, the trees have adjusted to the winter by going into a period of torpidity or rest. They too have thick bark to ensure them from the cold climate. Trees bloom and develop amid the spring and summer developing season. Many distinctive sorts of trees, bushes, and herbs develop in deciduous woodlands.

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What happens to acetylcholine (ach) after it is released from the presynaptic membrane?

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The acetylcholine (ach) gets broken down and the choline is reabsorbed.

The presynaptic membrane formed by the terminal button of an axon which faces the cell membrane of neuron or muscle fiber. Axon may have infrequent branches which are called axon collaterals. Thus, axons and axon collaterals terminate in many short branches or telodendria.

The release of ACh transpire through Ca2+ stimulated docking, fusion, and fission of the vesicle with the nerve terminal membrane. However, the ACh, is an enzyme in the synaptic cleft as well as, ACh diffuses across the synaptic cleft.

When acetylcholine (ACh) is released from the nerve endings upon action potential-driven depolarization, triggers postsynaptic response.

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Hybrids hide one expression of a trait that reappears when hybrids are self-crossed because _____.

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Hybrids hide one expression of a trait that reappears when hybrids are self-crossed because  As gametes form, paired sets of elementen separate, and when gametes connect during fertilization, the elementen combine once more.

The process of interbreeding individuals from genetically diverse populations to create a hybrid is known as genetic hybridization. Therefore, a genetic hybrid would have two unique alleles of the same gene. Because hybrid animals lack functional sex cells, they are unable to produce sperm or eggs, rendering them infertile. This is true because their parents' chromosomes from different species don't line up.

The merging of male and female gametes from the same organism is known as a self cross. Selfing is another name for it.

Some features exhibit a pattern whereby one allele expresses itself in the hybrid (dominant), while a second allele is present but hidden (recessive). A dominant allele will show up externally in the organism when it is combined with either another dominant allele or a recessive allele. Only when two recessive alleles are combined will a recessive allele become visible.

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A population of 200 mice contains 168 brown mice. brown is dominant to gray. how much of the population would be heterozygous?

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84%

84% of the population of mice would be heterozygous.

What does heterozygous mean?

Heterozygous refers to the presence of two different allele types for the same gene. For a single gene, these alleles display two distinct character types. An illustration would be someone with an allele for both brown and black hair.

There are 200 mice in total, 168 of which are brown.

By the Hardy–Weinberg (HW) equilibrium

q² (bb) = (200 - 168) /200 = 32 / 200 = 0.16

q: √ 0.16 = 0.4

p = 1 - q = 1 - 0.4 =  0.6

p² (BB) = 0.6 x 0.6 = 0.36

Thus, 84% of the population of mice would be heterozygous.

What is meant by population heterozygosity?Given that q2 is significantly smaller than 2pq when q is close to zero and p2 is significantly smaller than 2pq when p is close to zero, rare alleles are mostly found in heterozygotes. This is known as population heterozygosity.

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Hybridomas, which produce monoclonal antibodies, are made by fusing cells of the immune system with.

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Hybridoma cells resulting from the fusion of B lymphocytes and myeloma cells produce specific monoclonal antibodies. Hybridomas are generated by fusing spleen cells (plasma cells) from immunized hosts with a compatible myeloma cell line (malignant and immortal plasma cell line).

What is hybridomas?A hybriddoma is a culture of hybrid cells formed by the fusion of B and myeloma cells. Hybridoma technology gives rise to hybridomas. This technique was created to create mAbs. Hybridomas have two crucial B cell properties: antibody production and myeloma cell immortalization.Hybridoma technology ushered in a paradigm change by enabling the mass manufacture of extremely specific and sensitive monoclonal antibodies. The mAbs have been widely employed in diagnostics, including the detection of cancer. These are also widely utilized in cancer treatment.

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If a gene exists in 10 different alleles in a population, how many alleles can be expressed in one diploid cell?

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If a gene exists in 10 different alleles in a population, two alleles can be expressed in one diploid cell.

What is a diploid cell?

The term "diploid" describes an organism's cells having two full sets of chromosomes, with one chromosome from each parent present in each pair. Since humans are diploid, the majority of their cells have 23 pairs of chromosomes. However, human germ cells (egg and sperm cells) are referred to as haploid since they only have one pair of chromosomes.

Two full sets of chromosomes are present in a diploid cell. The majority of human cells are diploid, with 23 chromosomal pairs totaling 46 chromosomes. This comprises a pair of sex chromosomes and 22 pairs of autosomes. The mother and father each contributed one replica of each pair of chromosomes to the person.

We have two copies of every gene because we have two copies of each chromosome. The majority of mammals, including humans, are diploid, however certain creatures are polyploid or have more than two sets of each chromosome. Consider the octoploid nature of your typical supermarket strawberry, which has eight complete sets of seven chromosomes apiece for a total of 56 chromosomes.

Therefore, two alleles can be expressed in one diploid cell, if a gene exists in 10 different alleles in a population.

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Transfer of a high-energy phosphoryl group to adp, resulting in atp occurs when?

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Transfer of a high-energy phosphoryl group to ADP, resulting in ATP occurs when:

1,3-bisphosphoglycerate → 3-phosphoglycerate.

phosphoenolpyruvate (PEP) → pyruvate.

Which enzyme transfers the phosphoryl group from GTP to ADP to form ATP?

The enzyme nucleoside diphosphate kinase can convert GTP and ATP into one another as follows: GTP + ADP → GDP + ATP. This enzyme converts GTP to ADP by transferring the phosphate group. The only process in the Krebs cycle where direct energy is obtained as GTP is the substrate chain reaction.

Each 3-phosphoglycerate undergoes oxidation to produce a phosphoenolpyruvate molecule with a strong phosphate link. Each phosphoenolpyruvate undergoes substrate-level phosphorylation, which removes the high-energy phosphate and transfers it to ADP to produce ATP and pyruvate.

A high-energy phosphate group is added to ADP to convert it to ATP for energy storage. The conversion occurs either in specific energy-producing structures or in the cytoplasm, which is the fluid between the cell membrane and the nucleus.

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Why is it important for teachers to implement all six levels of bloom's taxonomy in their lesson plans?

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It is important that teachers implement all six levels of Bloom's taxonomy in their lesson plans because Bloom's Taxonomy of the Cognitive Domain is structured in levels of increasing complexity – from the simplest to the most complex – and that means that in order to acquire a new skill belonging to the next level, the student must have mastered and acquired the skill of the previous level.

What are the 6 levels and 3 domains of blooms taxonomy elaborate?

Bloom's Taxonomy comprises three learning domains:

the cognitiveaffectiveand psychomotor

and assigns to each of these domains a hierarchy that corresponds to different levels of learning. It's important to note that the different levels of thinking defined within each domain of the Taxonomy are hierarchical.

With this information, we can conclude that Bloom's taxonomy is a classification system used to define and distinguish different levels of human cognition

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How does your calculated value compare to your measured cell potential for cell 6?

Answers

Formula for the Overall Cell Potential is ;  E0cell=E0red−E0oxid

E0cell = Measured cell potential

E0red = Sum of the reduction potential ( cathode )

E0oxid = Oxidation potential ( anode )

Calculated value of cell potential can differ from the Measured Cell potential because of the cell impurities, value differences during the calibration of voltage or concentration.

Measured potential of a cell is normally  less than the ideal or nominal volts. This is because of the voltage which is specified for the ideal conditions for a new unused cell. The conditions mention temperature, atmospheric pressure, presume sound unaffected condition of electrode plates as also pure electrolytes etc.

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It is likely that modern Homo sapiens first extended out of Africa by crossing the Sinai Peninsula from North Africa and moved into the ____, or eastern Mediterranean.

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It is likely that modern Homo sapiens first extended out of Africa by crossing the Sinai Peninsula from North Africa and moved into the Levant or eastern Mediterranean.

Historically, a broad area in Western Asia's Eastern Mediterranean region has been referred to as the Levant.It is likely that modern Homo sapiens first extended out of Africa by crossing the Sinai Peninsula from North Africa and moved into the Levant or eastern Mediterranean.Levant originally meant "the East" or "Mediterranean lands east of Italy" when it first appeared in the English language in 1497. It is derived from the French word levant, which means "rising" and refers to the sun rising in the east or the sunrise location.Some of the earliest stone tools manufactured by our ancestors Homo erectus after they left Africa were made by the earliest humans in the Levant at a few known sites in Israel, Syria, and Jordan about 1.7 million years ago.

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In what ways is human population ecology similar to and different from that of other organisms? why is it difficult to determine a carrying capacity for humans?

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Human can regulate or control their fertility . Population are not limited according to the natural resources. The nutritional requirement of human are unique in the animal kingdom.

In humans , they are complex species we do not reproduce , consume resources and interact with our living environment uniformly.If human consume only what they actually needed then the earth could potentially support a much  higher figure.

There are current limiting factors for growth of humans are pollution and land for agriculture. Carrying capacity is the level of production that does not impact undesirably on the surrounding ecosystem.There are four categories such as - physical. ecological, economic, and social carrying capacities.

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Fatty acids that are necessary for proper health but cannot be synthesized by the body are called ________ fatty acids.

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Fatty acids that are necessary for proper health but cannot be synthesized by the body are called gluconeogenesis fatty acids.

What is gluconeogenesis?The process of producing glucose (sugar) from lipid (fat) or protein breakdown products, as well as from its own breakdown products. Gluconeogenesis primarily takes place in liver or kidney cells.The process of producing glucose in the body from non-carbohydrate precursors is known as gluconeogenesis. New glucose is produced by biosynthesis, not through the ingestion of carbohydrates. Lactate, pyruvate, glycerol (fat), and certain amino acids can all be converted into glucose (protein).Both the kidneys and the liver engage in glucose synthesis. Between meals, gluconeogenesis meets the need for plasma glucose. The hormones that cause diabetes encourage the production of glucose (glucagon, growth hormone, epinephrine, and cortisol). Glycerol, lactate, propionate, and a few amino acids are examples of gluconeogenic substrates.

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Section 1: ENERGY

Discuss how we obtain and use energy in this section of your project. You should include how we use natural resources to create energy and at least two different types of alternate energy sources.

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The three main uses of energy resources include: Transport. Electricity generation. Heating.

name the two parts of an ecosystem from which organisms need resources to survive and reproduce?

Answers

Answer:

abiotic and biotic

Explanation:

the abiotic components of any ecosystem are properties os the environment

_________ can take many different forms ranging from human organs to computer software.

Answers

Components can take many different forms ranging from human organs to computer software such as - CPU, Memory and IO.There are invincible indestructible and codependent connection between humans and computers.

CPU is like brain of the body which controls the computer , Memory which gain and store every commend like a human memory store Relationship is based on the difference and similarities between human and computers and the ways in which what one of them lacks be fulfilled by what the other one has.

Computer and humans inhabit same world in which they Seems to be existing in symbiosis, which means both are depend on each others.Collaborative computerized robots that are part machines part humans.

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The presence of both immature neutrophils and nucleated erythrocytes in the peripheral blood is most accurately called a:______.

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The presence of both immature neutrophils and nucleated erythrocytes in the peripheral blood is most accurately called a Neutrophilic shift .

Immature neutrophils in the blood may indicate the presence of a disorder in the bone marrow, such as leukemia. When immature neutrophils are found in the blood, doctors usually take a sample of bone marrow .Nucleated RBCs (NRBCs) are immature RBCs not normally seen in the peripheral blood beyond the neonatal period. Their appearance in peripheral blood of children and adults signifies bone marrow damage or stress and potentially serious underlying disease. Nucleated red blood cells represent a very immature form of erythrocytes that are released by the bone marrow when the body significantly lacks red blood cells, such as in severe anemia, thalassemia.

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A(n) __________ is a layer of protein or glycoprotein that exhibits a pattern resembling floor tiles.

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A coating of protein or glycoprotein that looks like floor tiles is called an "S-layer."

Description of "S-layer":

A paracrystalline surface layer(S-layer) serves as the most prevalent kind of cell wall in varieties of Archaea. It is made up of a layer that is consistently organized and is made of molecules of protein or glycoprotein that lock together. possesses a tile-like pattern in electron micrographs. S-layers typically range in thickness from 5 to 25 nm and feature similar holes that are 2 to 8 nm in diameter, however, this depends on the species. S-layers have been discovered in a number of bacterial species.

Functions and importance of "S-layer" in infection-causing bacteria:

Numerous potential uses for the S-layer have been mentioned. They consist of the following-

The S-layer may shield bacteria from dangerous enzymes, and pH fluctuations, the carnivorous microbe Bdellovibrio, is a parasitic microbe that really exploits its motility to infiltrate other bacteria and proliferate within its cell, and from phages.The S-layer can operate as an adhesin, allowing the bacteria to colonize and withstand washing by adhering to host tissues and external sites.The S-layer may increase virulence by shielding the bacteria from phagocytosis and complement assault.A coarse molecular filter might be formed by the S-layer.

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The only cell type found superficial to the stratum spinosum in the epidermis is the?

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The only cell type found superficial to the stratum spinosum in the epidermis is  keratinocyte.

What is the function of epidermis?

The principal function of the epidermis of the body is to provide protection from harmful substances like pathogenic bacteria, viruses etc.

It keeps our skin hydrated, help in production of new skin cells and determine its color.

In epidermis, the keratinocytes move to the layer of  spiny-shaped cells called stratum spinosum.

The stratum spinosum is partially responsible for the skin’s strength and flexibility.

Hence, keratinocyte is  found superficial to the stratum spinosum.

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Muscle fatigue occurs as ______ increases in concentration in the muscle tissues.

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Muscle fatigue occurs as lactic acid increases in concentration in the muscle tissues.

What causes muscle fatigue?Muscle fatigue may be caused due to accumulation of lactic acid in the muscles, ion imbalance (Na+, K+), less production of ATP as compared to its use in the cells.Muscle fatigue is defined as the decrease in ability of muscles to generate force. It occurs after exercise, strenuous activity, and aging. This may even be caused due to diseases like muscular dystrophy.It results in pain, lessens the movement of body, etc.If muscle fatigue occurs regularly even without performing any strenuous activities, one should immediately consult a doctor to find the underlying causes.Caffeine and ephedrine are synthetic products which can be used to treat muscle fatigue.

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The basement membrane between the epidermis and dermis provides for adhesion and serves which function regarding molecule transportation?

Answers

A Final statement or concluding statement

Keratinocytes and fibroblasts' adhesion, mobility, and proliferation are controlled by the basement membrane. It also gives the epidermis structural stability.

What is epidermis?

The epidermis is the thin, outer layer of skin that is visible to the eye and acts to protect the body. The epidermal layers comprise the stratum basale (the epidermis's lowest layer), the stratum spinosum, the stratum granulosum, the stratum lucidum, and the stratum corneum (the most superficial portion of the epidermis).

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What effect did decreasing the extracellular sodium have on the resting membrane potential?

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Decreasing the extracellular sodium makes the resting membrane potential disappear. It tends to become less negative. Only a minute change is seen because the resting neuron is not very permeable to sodium.

Sodium is a soft silvery-white metal in nature. In the nerve cells, Sodium (Na+) is critical for the action potential. Action potentials are recursively initiated as the extracellular concentration of Sodium ion Na+ is modified. As the quantity of sodium in the extracellular solution is decreased its action potential decreases as well. Therefore, the quantity of sodium is inversely proportional to its action potential.

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When lions pick off the slowest members of a herd they are hunting why is it beneficial to the group as a whole?
A. The herd puts the least desirable members on the outside for the lions to eat.
B. It keeps the lions busy long enough for the rest to get away.
C. It keeps the herd stronger through natural selection.
D. It does not benefit the herd.

Answers

Answer:

C

Explanation:

The one that got caught was the one that was most likely least essential to the herds' survival. It was either sick, young, elderly or injured.

A disease that attacks and disables the myenteric plexus would Group of answer choices increase intestinal motility. decrease intestinal motility. increase gastric secretion. decrease gastric secretion.

Answers

A disease that attacks and disables the myenteric plexus would decrease intestinal motility.

A network of nerves that runs between the layers of the muscular propria in the digestive system is referred to as the myenteric plexus, also referred to as the Auerbach plexus (plural: plexuses). The plexus aids in controlling peristalsis in the digestive system, among other things.The peristaltic motion of the bowels is primarily controlled by the myenteric plexus. Although it is connected to the autonomic nervous system, which connects the central and enteric nervous systems, it can act independently of the central nervous system.Thus, A disease that attacks and disables the myenteric plexus would lead to a decrease in intestinal motility.

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