Answer:
A frog’s legs grow during life to help it jump farther, and it passes on the longer legs to its offspring.
Explanation:
Lamarck believed that accumulation of small changes through successive generations promote the developement of new organs or characters which are transmitted to the offspring in the next generation (such as elongation of frog's leg). This is called inherirance of acquired characters.
: after the cambrian explosion, the extensive microbial mats that characterized the ediacaran seas were much less common. do you think this ediacaran-style soft-bodied mold preservation would be common in the cambrian? explain why or why not.
On Ediacaran bedding planes all across the world, microbial mats are frequently discovered alongside macro- and trace fossils. As wrinkled surface textures on bedding planes or, less frequently, as preserved collections of small pyritized filaments covering macrofossil surfaces, mats can be identified. Due to its cracked and wrinkled look, the "elephant skin" texture of MISS is arguably the most identifiable kind. Thin sections cut through bedding planes can also be used to identify microbial mats. They can be recognized by the distinctive orientation of the sediment grains or, on rare occasions, by the presence of microfossils of the original bacteria. Jim Gerling postulated in 1999 that Australia's vast microbial mats may have been crucial to the preservation of Ediacaran macrofossils.
What about Cambrian explosion?The Cambrian Period is a crucial juncture in the evolution of life on Earth since it is when the majority of the major animal groupings first appear in the fossil record. Because of the comparatively short time span over which this diversity of species develops, this event is frequently referred to as the "Cambrian Explosion." Some believe that a sharp increase in oxygen caused the transition, while others assert that it resulted from the evolution of a significant breakthrough, like vision. More than 500 million years have passed since the Cambrian explosion. It was a period of rapid proliferation of many types of life on Earth, when the majority of the major animal groupings first began to show up in the fossil record. The unprecedented appearance of life during the start of the Cambrian Period, between 541 and about 530 million years ago, is known as the Cambrian explosion. Between 20 and 35 of the major phyla that make up contemporary animal life first appeared during the event, which was marked by their emergence.Learn more about Cambrian explosion here:
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PLS HELP BRANLIEST TO WHOEVER
Question
The Moorish idol fish lives in coral reefs around the world. Its oceanic environment is saltier than the environment inside its cells.
1. Which process contributes to the Moorish idol fish losing water to its surroundings
A. ion channels
B. facilitated diffusion
C. active transport
D. osmosis
2. The concentration of water is greater outside the cell than inside the cell.
What will happen according to the process of osmosis?
A. Water will move out of the cell, causing it to shrivel.
B. Water will surround the cell, keeping it moist.
C. Water will be repelled away from the cell, keeping it dry.
D. Water will move into the cell, causing it to swell.
3. Amoebas are single celled organisms that take in particles, and sometimes smaller organisms, as food by enclosing the food particle in its membrane. The amoeba requires energy for this process.
Which structure in an amoeba produces the energy it needs?
A. nucleolus
B. vacuole
C. mitochondria
D. vesicle
4.
Read the paragraph.
Despite its name, the Pacific sea horse is actually a type of fish. Its horse-shaped head gives it its name. This creature lives in the Pacific waters off the west coast of the Americas, from Peru to Southern California. Like many other ocean fish, sea horses face the constant challenge of losing water to their saltier environment. When a sea horse sees a predator, its nervous system kicks into high gear.
Which structure is responsible for transmitting signals from one nerve cell to the next
A. Golgi body
B. nucleus
C. cell membrane (Pretty sure it's C but just want to confirm)
D. ribosome
Answer:
1. I'm pretty sure the answer is D osmosis.
2. The answer is A ( the cell will shrivel).
3. The answer is C.
4. The answer is C the cell membrane.
Explanation:
1. Osmosis, the process where water moves from less salty to saltier compartments, makes it so that freshwater fish never drink water! Instead, they absorb water through their gills because their bodies are saltier than the water around them
2. A hypertonic solution is type of solution that has a greater concentration of solutes on the outside of a cell when compared with the inside of a cell. Water crosses the cell membrane , but more water leaves the cell than enters it. Therefore, the cell will shrink due to exosmosis.
3. The mitochondria is THE POWERHOUSE OF THE CELL.
4. Well the cell membrane contains the axons of a cell ( or at least in animal cells), so I would have to say the answer is C.
a recent study of hellbender genomics published in 2019 shows that all genes found in the genome of male hellbenders are also present in female hellbenders. however, some genes found in females are absent in the genome of males. what does this result suggest about the sex determination system of hellbenders (2 points)?
Hellbenders ( Cryptobranchus alleganiensis Daudin) are unique aquatic salamanders of the eastern United States that have experienced considerable population decrease because of habitat change and degeneration.
Sexual dimorphism is common in vertebrates that show male-male combat. The Eastern Hellbender manifest such combat and sexual dimorphism. Although hellbenders show sexual dimorphism in several morphological characters, the only dependable external morphological character is the appearance of swelling around the cloaca of males throughout the autumn breeding season.
Systems of genetic sex determination and the homology of sex chromosomes in different taxa differ greatly across vertebrates.
Much advancement remains to be made in understanding systems of genetic sex determination in non-model organisms, especially those with homomorphic sex chromosomes and/or large genomes.
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What are types of exercise that best develop metabolic efficiency?
Long-duration, moderate-intensity, high-intensity, brief duration are types of exercise that best develop metabolism efficiency.
The body converts food and liquids into energy through a process called metabolism. The calories from food and beverages combine with oxygen during this process to create the energy the body requires.
Even when in rest, a body need energy to function. This includes maintaining an even hormone balance, breathing, pumping blood throughout the body, and cell growth and repair. Basal metabolic rate, often known as basal metabolism, is the measure of how many calories a body burns while at rest.
Basal metabolic rate is mostly influenced by muscle mass. Body size and composition also affect basal metabolic rate. Even when at rest, people with more muscle mass or who are larger burn more calories.
Age. People typically lose muscle as they age.
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What has bacteriochlorophylls and uses alcohols for carbon?
Photoheterotrophs have bacteriochlorophylls and obtain carbon from alcohols.
Photoheterotrophs are heterotrophic organisms that obtain their energy from light. They also cannot rely solely on carbon dioxide as a carbon source. They make use of organic compounds found in nature. Heterotrophs are the food chain's consumers, including herbivores, carnivores, and omnivores. Heterotrophs include all animals, some fungi, and the majority of bacteria. They are unable to produce their own food. As a result, they meet their energy needs by feeding on organic matter or another organism. Photoheterotrophs are microorganisms that get the majority of their carbon from organic compounds in their environment. Purple non-sulfur bacteria, green non-sulfur bacteria, and heliobacteria are among these organisms.
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Every fossil tells a story. A paleontologist is a scientist who studies fossils to learn what life was like on planet Earth long ago. Fossilized footprints help us understand an animal’s anatomy, size, weight and even behavior. We can see if it traveled in groups or tended to live alone. Fossilized teeth can give us hints about an animal’s diet. We can even learn about the landscape where a plant or animal lived. If there are fish fossils in what is now a desert, we might hypothesize that the landscape was once a body of water. Learning more about those fish fossils—like their age and what kind of water they lived in—will help us learn even more. Paleontologist are most like detectives who use fossils as A clues. B theories. C suspects. D witnesses.
Answer:
the answer would be A) clues
Explanation:
theories would be what they draw from the fossils.
suspects doesn't apply as much as clues
and the bones didn't witness a thing.
how might it hurt ecosystem stabiility
Which plant species is most likely to use a C4 pathway? Was it more efficient at all temperatures?
Only about 3% of all land plant species use the C4 pathway, but they dominate nearly all grasslands in the tropics, subtropics, and warm temperate zones. Additionally, C4 plants include very productive crops.
What is the C4 pathway ?The C4 Pathway Plants that utilize the C4 pathway are referred to as C4 plants since it is built to effectively repair CO₂ at low concentrations. These plants convert CO₂ into oxaloacetate, a C4 molecule with four carbons. This takes place in cells known as mesophyll cells.
What is increased via the C4 pathway?A biological CO₂ pumping mechanism called C4 photosynthesis is responsible for raising the CO₂ concentration at the Rubisco site. A high CO₂ environment surrounding Rubisco slows down photorespiration and boosts net CO₂ uptake, resulting in extremely effective photosynthesis.
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Alma is walking in a park. Suddenly, a wild dog charges toward her. Alma is frightened. The
While the sympathetic nervous system prepares the body to respond to stressful situations, the parasympathetic nervous system takes it back to its normal relaxed state once the stressful factor is over. 1) sympathetic nervous system 2) parasympathetic nervous system.
How does the body respond to stressful situations?When facing stressful situations, like a dog attack, the body responds through the sympathetic nervous system (SNS) which prepares the organism to escape from that situation.
Let us remember that the sympathetic nervous system and the parasympathetic nervous system compose the autonomous nervous system and have opposite effects on the organism.
During stressful moment, the sympathetic nervous system, SNS, produce an increase in heart-biting frequency and strength, blood pressure, overstimulate respiration, and dilatates respiratory tracts. The organism is alert and ready to escape.
When the affecting factor disappears, the parasympathetic nervous system is activated and the body recovers its balanced and relaxed state by reducing blood pressure and respiratory and cardiac frequency.
Alma is walking in a park. Suddenly, a wild dog charges toward her. Alma is frightened. The 1) sympathetic nervous system starts to respond by increasing her heart rate and dilating her pupils. After running for a few minutes, Alma realizes that the dog has fallen far behind. At this point, her 2) parasympathetic nervous system starts working to relax her body by slowing down her heart rate and constricting her pupils.
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Complete question:
Fill in the blanks
Alma is walking in a park. Suddenly, a wild dog charges toward her. Alma is frightened.
The (1)________ starts to respond by increasing her heart rate and dilating her pupils.
After running for a few minutes, Alma realizes that the dog has fallen far behind.
At this point, her (2)______ starts working to relax her body by slowing down her heart rate and constricting her pupils.
describe the nucleus. What can be found inside the nucleus?
The cell nucleus may be a membrane-bound organelle found in eukaryotic cells. The key work of the nucleus is to control cell development and duplication.
The DNA of a cell is found inside the cell's nucleus.
The cell nucleus could be a membrane-bound organelle found in eukaryotic cells. Eukaryotic cells usually have a single core, but many cell sorts, such as mammalian ruddy blood cells, have no cores, and several others including osteoclasts have numerous.
The most structures making up the core are the atomic envelope, a twofold film that encases the whole organelle and confines its substance from the cellular cytoplasm; much just like the cytoskeleton bolsters the cell as an entirety.
The DNA of a cell is found inside the core. It is sorted out into units known as chromosomes, each containing a long DNA atom that is related to different proteins.
The key work of the nucleus is to control cell development and increase.
This includes directing quality expression, starting cellular generation, and putting away hereditary fabric vital for all of these errands. In arrange for a core to carry out vital regenerative parts and other cell exercises, it needs proteins and ribosomes.
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which surgical procedure relieves pressure on a compressed spinal nerve?
Answer:
Lumbar decompression surgery
The foraminotomy is the surgical procedure relieves pressure on a compressed spinal nerve.
What is Foraminotomy?A foraminotomy is a surgical procedure which increases the area around one of the bones in the spinal cord, this will relieves pressure on compressed nerves. It is the minimally invasive procedure and helps to reduce pain which results from the pressure on the nerve.
Spinal cord is made up of bones called vertebrae, between these vertebrae there is disc shaped structure to provide support called as Intervertebral disc. Spinal cord have a small hole known as intervertebral foramen present between vertebrae through which information is send and received by the nerves present in spinal cord.
When these opening become small , the nerves compressed causes pains, tingling in the body and weakness. The surgeon cut on the back or neck, widen intervertebral foramen and remove the blockage.
So, the foraminotomy is the surgical procedure relieves pressure on a compressed spinal nerve.
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Which numbered cellular structure in the cell provides external support as well as protection for the cell?
4
1
3
2
3
Eukaryotes that reproduce through reproduction require two cells to contribute genetic material for the production of the next generation. True or false?.
Eukaryotes that reproduce through reproduction require two cells to contribute genetic material for the production of the next generation is true.
What is genetic material?Genetic material is defined as anything with genetic information that can be passed from one generation to the next, whether it be from a plant, animal, microbial, or other source.
It can also be defined as the means by which knowledge is passed from one generation to another.
There are basically three types of genetic materials.
DNARNAGenesSome of the properties of genetic materials are:
It has to be secure.When necessary, it must be able to be expressed. It must be able to replicate information accurately. It must be passed unchanged from father to offspring.Thus, eukaryotes that reproduce through reproduction require two cells to contribute genetic material for the production of the next generation is true.
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the doctrine of specific nerve energies involves the stimulation of
The Doctrine's central tenet is that the direct objects of feeling are the actions of sensory nerves, rather than properties external to the body.
The Doctrine of Specific Nerve Energies has had and continues to have a huge influence on perception physiology, psychology, and philosophy. In layman's terms, the Doctrine asserts that we sense the activity of our nerves first and foremost, rather than qualities in the external environment. The initial recognition of a stimulus as a result of physical stimulation of a receptor in a sense organ is referred to as sensation (e.g., eye, ear, etc.). The integration and interpretation of sensory information is referred to as perception.
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Which statement would the information presented in this population pyramid best justify?
A.
Nigeria will need outside immigration to keep its population stable.
B.
Women in Nigeria are having more children today than they used to in the past.
C.
Nigeria has a faster rate of growth than any of its neighbors.
D.
There will be over one billion people in Nigeria by 2015.
Information presented in this population pyramid best justify that Nigeria has a faster rate of growth than any of its neighbors.
The population pyramid represents the breakdown of the population by gender and age at a given point in time. It consists of two histograms, one for each gender where the numbers are shown horizontally and the ages vertically.
There are generally three types of population pyramids created from age-sex distributions expansive, constrictive and stationary. A Population Pyramid is a graph that shows the age-sex distribution of a given population. It a graphic profile of the population's residents.
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Answer:
c
Explanation:
What is a good informative speech topic??
Answer:How does sugar influence human body? Why is child obesity such a common issue today? Should food culture be a part of the educational process in high school or college? What are antibiotics and how does humanity get used to it?
Explanation:
I hope this helps! If it does would you please mark me brainliest?
Nicotine binds to acetylcholine receptors at the synaptic cleft. Which is a likely effect of nicotine?.
Answer:nicio
Explanation:
Nicotine binds to acetylcholine receptors to the synaptic cleft. This will enable Na⁺ flux into the postsynaptic neuron in the absence of a presynaptic action potential.
What is Synaptic cleft?Synaptic cleft is the space between two neurons across which the impulse is transmitted by a neurotransmitter. The neuron which transmits the signals are known as presynaptic neurons and the neurons which receives the signal are known as postsynaptic neurons.
Nicotine similar to Acetylcholine (ACh), is a nicotinic receptor agonist. The binding of nicotine and ACh to the nicotinic receptors on the plasma membrane cause a conformational change that either opens or closes the ion channels of the receptors, thereby changing the receptors' functional state.
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PLEASE HELP ASAP I DON’T UNDERSTAND ANY OF THIS
Answer: 2. Forms 3. 72.3% 14. Weather 6. H2O and O2 9. Gas 11. Liquid to a solid 10. Release 8. More
Explanation:
sorry that’s all I know
Blood contains a group of cells with similar structure and function. Can blood be called a tissue?
Blood is both a tissue and a fluid. It is a tissue because it is a collection of similarly specialized cells that serve particular functions. These cells are suspended in a liquid matrix (plasma), which makes the blood fluid.
Explanation:A blood cell, also called a hematopoietic cell, hemocyte, or hematocyte is a cell produced through hematopoiesis and found mainly in the blood. Major types of blood cells include red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes). Blood is a fluid connective tissue. It is different from other connective tissues as its matrix is fluid and has no fibres. The fluid matrix of blood is known as plasma. Other connective tissues have elastic and collagenous fibres, unlike blood which has none.
List 4 ways of how can you apply macromolecules to real world situations?
An example would be knowing if someone has a food allergy to a specific macromolecule by testing their stomach contents.
The ways that one can apply macromolecules to situations include:
Macromolecules promote structural integrity.
They serve as a reservoir for stored energy, Have the capacity to store and retrieve
genetic data, and can They speed up metabolic processes.
What is a macromolecule?
A macromolecule, such as a protein or nucleic acid, is a very big molecule crucial to biophysical processes. It is made up of many atoms that are covalently bound. There are numerous macromolecules that are polymers of monomers, or smaller molecules.
Since macromolecules are composed of repeated monomer subunits, they are sometimes referred to as polymers, which means "many" units. Carbohydrates, lipids, nucleic acids, and proteins are examples of the four biological macromolecules of life. Protein makes up a sizable portion of our bodies' dry weight or the weight that is not water, which makes up a sizable portion of the total. Protein makes up a very high percentage of the substance in our organs (including the skin), glands, and body fluids. For example, our bones are roughly one-fourth protein. The entire animal kingdom, including the animals we feed and the bacteria that invade our bodies, is mostly constituted of protein, not just humans.
Briefly explain how the collateral ligaments and the cruciate ligaments of the knee stabilize the knee by preventing specific movements between the tibia and femur
The collateral ligaments and the cruciate ligaments of the knee stabilize the knee by crossing each other to form an X and joining to bones like the femur, patella, and tibia to provide preventing specific movements like side movements.
The two medial and sidelong collateral tendons work together to permit your knee to move accurately, whereas the front and back cruciate tendons limit it from moving within the off-base heading.
The quadriceps muscles work together with your hamstrings and tendons to stabilize your knees and permit them to work the way they are gathered to.
The lateral collateral tendon (LCL) is on the external side of your knee. It interfaces your femur to your calf bone (fibula). The collateral tendons anticipate the knee from moving side to side as well.
Cruciate tendons are the interior of your knee joint and interface your femur to your tibia. They cross each other to form an X.
The cruciate is the foremost vital knee tendon in giving soundness to the knee. There are two cruciate tendons, the front (ACL) and the back (PCL).
They sit profoundly interior of the center of the joint connecting to the tibia and femur. They cross over each other, thus their title, and take after the St Andrews Cross (X).
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Note that the mating calls of the two species are similar in areas where only one of the two species is present, but markedly different in areas where both species live. State an explanation for this.
It explains the exclusion principle, that two species can't coexist if they occupy exactly the same niche.
The aggressive exclusion precept tells us that two species cannot have precisely an equal area of interest in habitat and stably coexist. this is due to the fact species with equal niches also have the same desires, which means that they might compete for exactly equal sources.
Begin superscript, 1, end superscript. every species fits into an ecological network in its own special manner and has its personal tolerable levels for lots of environmental elements.
Two related species or populations are taken into consideration sympatric once they exist inside an equal geographic area and for that reason often stumble upon each other. First of all interbreeding populace that splits into or greater distinct species sharing a commonplace range exemplifies sympatric speciation.
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3, Describe an example of mutualism with which you are familiar, and that isn't explained in this book.
Answer: An example of mutualism would be the remora fish and shark.
Explanation: The shark gets cleaned and the remora fish gets something to eat. Both benefit from each other.
Why do we need to include a search for the piece of dna that codes for tubulin if we are really only interested in finding, in this case, a commonly used gmo sequence?.
We need to observe the sequence of the gene that codes for tubulin because it may be used as a consensus sequence in order to find GMO organisms based on the significant differences in that sequence.
What is a consensus sequence?A consensus sequence is a nucleotide DNA sequence of an organism that contains the most common nucleotides at each position, which indicates that the sequence derives from a common origin.
A consensus sequence may be very useful to determine if an organism is part of the same lineage group and or taxonomic group, and common genes encoded by a group such as a tubulin gene can be used to find significant differences in a sequence alignment.
Therefore, with this data, we can see that the consensus sequence of the tubulin gene may be really useful to determine if an organism belongs to a taxonomic group.
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flies are scavengers and tend to break down dead organisms. based on this information, what is a plant characteristic that would best attract flies?(1 point)
Scavengers are organisms that eat other living things after they have died. The majority of scavengers are drawn to flowers that smell foul.
What are Scavenger ?A scavenger is an organism that primarily consumes decomposing biomass in an ecosystem, such as animal carcasses or rotting plant matter. Carnivores include many types of scavengers. An organism that consumes meat is a carnivore.
The best illustration of a scavenger is a vulture. Coyote, Striped Hyena, Jackals, Bottle flies, Ants, Beetles, etc. are further examples of scavengers.Decomposers and scavengers consume dead things and break them down into their component chemicals for food. Then, plants and animals may utilise nitrogen, carbon, and other nutrients once more. The planet would be covered in dead plants and animals if scavengers and decomposers didn't exist. as deceased organisms cannot decompose.Learn more about Scavenger here:
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This “International Code” sets specific rules to help decide new scientific names or changes of names.
International Union of Applied Chemistry and Physics
International Units of Measure and Mass
International Code of Nomenclature
International Code of Ethics
International Code of Nomenclature is the International Code sets specific rules to help decide new scientific names or changes of names.
The International Code of Nomenclature for algae, fungi, and plants is the set of rules and recommendations that govern the scientific naming of all organisms traditionally treated as algae, fungi, or plants.
The rules and recommendations have one fundamental aim to provide the maximum universality and continuity in the naming of all animals, except where taxonomic judgment dictates otherwise. The code is meant to guide only the nomenclature of animals, while leaving zoologists freedom in classifying new taxa.
Scientific names is called a binomial name. The generic name or the initial part of the name highlights the genus to which an organism belongs.
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Which statement is part of the cell theory?
O The flow of energy occurs within cells.
O
Every cell in an organism is identical.
O New cells arise from chemicals in the environment.
O Multiple cells are required to form life.
Statement B. Every cell in an organism is identical. is part of the cell theory.
Cell theory is a scientific concept first formulated in the mid-nineteenth century, that residing organism is made of cells, that they're the simple structural/organizational unit of all organisms, and that each cell comes from pre-present cells.
The cell theory states that all biological organisms are composed of cells; cells are the unit of life and all lifestyles come from preexisting existence. The cell theory is so installed nowadays that it bureaucracy one of the unifying ideas of biology. The mobile concept is important because it explains the idea of the cell and includes the subsequent postulates: The cellular is the fundamental unit of existence. All cells arise from pre-existing cells i.e Omnis cellula e cellula. All residing organisms on the earth are made from cells.
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Why is the Cell Membrane most important?
Ligaments reinforce joints by holding the bones together. What tissue type are ligaments?.
Ligaments, which are robust bands of fibrous connective tissue, bind the bones together outside their articulating surfaces.
What is the role of ligament in bones connectivity?Ligaments assist to keep joints stable both at rest and while moving, and they also protect against injury from overextension and over flexion (excessive movements).
Tendon and ligament are strong, fibrous connective tissues that join bone with bone or muscle with muscle and convey the mechanical forces that support the skeleton and permit movement of the body.
Therefore, Together with the tendons and muscles, the system of ligaments in the vertebral column acts as a natural brace to help safeguard the spine.
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Method(s) cells use to take in water molecules
