HELPP!!! Early stages in the embryo of a fish are similar to the early stages of human and pig embryos. An explanation
for this similarity is that the
A. pig and the human occupy the same habitat, while the fish occupies a different habitat
B. pig and the human are more closely related to each other than to the fish
C. pig, human, and fish evolved from a common ancestor
D. pig, human, and fish had
Answers
Answer:
a convergent evolution that led to similar embryo development patterns
The correct answer is C. pig, human, and fish evolved from a common ancestor.
Similarities in early embryonic development across different animal species suggest a common evolutionary origin. These similarities can be attributed to the conservation of developmental genes and mechanisms from a common ancestor. Therefore, the early stages of embryonic development in fish, pig, and human embryos are similar because they all share a common ancestor. The fact that the fish occupy a different habitat than pigs and humans is not relevant to the similarities in their embryonic development.
Related Questions
what are ectotherms define
Answers
Answer:
Poikilotherms
Explanation:
An ectotherm is an organism in which internal physiological sources of heat are of relatively small or of quite negligible importance in controlling body temperature. Such organisms rely on environmental heat sources, which permit them to operate at very economical metabolic rates.
Which of the following features need to be identified to draw an electron dot diagram?
total number of electrons
valence electrons
atomic mass
number of neutrons
Answers
Answer:
valence electrons
Explanation:
i think right or wrong
During the initiation step of translation, the fmet charged trna assembles in which site of the ribosome?
Answers
P site, initiation step of translation, the fmet charged tRNA assembles in this site of the ribosome.The small ribosomal subunit, mRNA, initiator tRNA, and large ribosomal subunit come together to form the initiation complex. The P site of the completed ribosome is where the initiator tRNA is located.
When an amino acid, tRNA, and mRNA come together inside the ribosome, translation begins. The process of translation continues as the mRNA passes through the ribosome after it has started. Each codon pairs with a new tRNA anticodon, bringing in new amino acid to lengthen the chain.
At the subunit interface, tRNA molecules bind to the ribosome in a solvent-accessible channel. The big and small subunits each feature three tRNA binding sites known as the aminoacyl site (A site), peptidyl site (P site), and exit site (E site). The expanding polypeptide chain of amino acids is held in place by the tRNA by the P site, also known as the peptidyl site. The new amino acid that will be added to the polypeptide chain is stored in the aminoacyl tRNA, to which the A site (acceptor site) binds.
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Please help! skin melanocytes produce the protein melanin, which gives the skin pigment. muscle cells do not produce melanin. which statement explains this difference between skin melanocytes and muscle cells?
A. muscle cells rely on rna, while melanocytes rely on dna.
B. melanocytes and muscle cells express different genes.
C. muscle cells destroyed the gene for melanin, but melanocytes did not.
D. melanocytes contain different genes from muscle cells
Answers
Answer:
The correct answer is B. "Melanocytes and muscle cells express different genes."
Although all cells in an organism (such as a human) contain the same DNA, different cell types express different sets of genes. Gene expression is the process by which specific genes are activated to produce a needed protein. In this case, the gene responsible for melanin production is expressed in melanocytes, but not in muscle cells.
This does not mean that muscle cells have destroyed the gene for melanin (as stated in option C) or that melanocytes contain different genes from muscle cells (as stated in option D). All cells within an organism contain the same genes, but not all genes are expressed in every cell. The process of gene expression is regulated by the cell to ensure that each cell type functions properly.
Option A is also incorrect because all cells, including both muscle cells and melanocytes, rely on both DNA (for storing genetic information) and RNA (for transmitting that information and producing proteins). DNA is transcribed into RNA, which is then translated into proteins. This process occurs in all cells.
The statement explains the difference between skin melanocytes and muscle cells is - melanocytes and muscle cells express different genes. So option b is correct.
Melanocytes are dark, dendritic-shaped, highly differentiated cells that secrete melanin, a pigment found in melanosomes, which is the primary function of melanocytes.
Melanocytes are a type of cell derived from the neural crest. They form a synapse with keratinocytes through their dendrites in the epidermis. Melanocytes play an important part in skin pigmentation and their role in the generation and distribution of melanin has been extensively studied.
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If you have a semi-
permeable membrane and
both sides are at
equilibrium, which direction will the solutes move?
A. Only to the left
B. In both directions
Answers
Solutes will always try to reach equilibrium, so of course they would need to move in both directions to balance out everything.
Question 1: Selective Breeding
3 points
(b) The cat breeder wants to use selective breeding so that all new
kittens have blue tail tips. Describe the process of selective breeding the
cat breeder could use. *
Answers
Explain how dominant and recessive alleles for the trait of height determine if a pea plan will be tall or short.
Answers
Answer:
If the plant has two dominant alleles for stem height (TT) then it is tall. If the plant has two recessive alleles for stem height (tt), it is short. If the plant is a hybrid (Tt), it is tall.
Explanation:
plzzzz give brainlist pionts
Scientist observed an organism X and noted down the mode of nutrition as follows X secretes enzymes outside its body and digests food with these enzymes. It then absorbs the digested food. Which organism was observed by the scientist?
Answers
Answer:
Hydra
Explanation:
The mode of nutrition being described in this question is EXTRACELLULAR DIGESTION, in which a food substance is chemically broken down externally. The organisms being portrayed is HYDRA. Hydra is an animal that secretes digestive enzymes that work on the food extracellularly (outside the organism), then absorb the digested food.
Therefore, the organism X observed by the scientist whose mode of nutrition is to secrete enzymes outside its body and digests food with these enzymes, then absorbs the digested food is the HYDRA.
What statement is true about changes in our environment?
a. Some things change quickly.
b. We can’t observe changes.
c. Non-living things do not change.
d. Living things do not change.
Answers
Answer:
A some things change quickly
"Apple had grown from just the two of us in a garage into a $2 billion company with over 4,000 employees."
a.
Ethos
b.
Pathos
c.
Logos
Answers
Ethos is the characteristic spirit of a culture, era, or community as manifested in its beliefs and aspirations.
Pathos is a quality that evokes pity or sadness
Logos is like the Word of God, or principle of divine reason and creative order
So the most reasonable answer would be Ethos.
Synaptic facilitation, a form of short-term plasticity, is primarily due to ______________. A. insertion of AMPA receptors into the post-synaptic membrane B. depletion of the releasable pool of vesicles C. prolonged elevation of presynaptic calcium levels following synaptic activity D. changes in Na channels located on the post-synaptic membrane
Answers
Answer:
The correct answer is - C. prolonged elevation of presynaptic calcium levels following synaptic activity.
Explanation:
Synaptic facilitation is a process of short-term plasticity that transiently increases synaptic transmission for less than a second, which is considered an essential part of playing a critical role in information transfer and neural processing.
It is evident that such an increase in the synaptic transmission is occur due to prolonged elevation of presynaptic calcium levels following synaptic activity.
write a food chain from this food wed with six tropic levels
Answers
Answer:
Pri mary Prod ucers
Prim ary Con sumers
Secondary Consum ers
Te rtiary Consumers
Ap ex Pred ators
Trophic casc ade?
(i put lines because it says that i'm using "inappropriate" words.)
Nitrogen bases pair with bases that are...
available
complementary
complementary and identical
identical
Answers
It’s not identical as A-T and C-G is what happens
Nitrogenous bases basically pairs with bases that are complementary. The correct option is B.
What are nitrogenous bases?Nucleobases, also referred to as nitrogenous bases or purely bases, are nitrogen-containing biological molecules that form nucleosides, which are then constituents of nucleotides, all of which are the basic building boxes of nucleic acids.
A set of 5 nitrogenous bases is used to build nucleotides, which then in results nucleic acids such as DNA and RNA.
These bases are critical because their sequencing in DNA and RNA is how information is stored.
A base pair in DNA are complementary to each other. Under normal conditions, the nitrogen-containing bases adenine (A) and thymine (T) pair, whilst also cytosine (C) and guanine (G) pair.
The structure of DNA is formed by the binding of these base pairs.
Thus, the correct option is B.
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oxygen enters seawater: group of answer choices through the respiration of animals. through the oxidation of metal ions in seawater. as a result of decomposition of plant and animal remains. as a byproduct of photosynthesis and diffusion from the surface
Answers
oxygen enters seawater as a byproduct of photosynthesis and diffusion from the atmosphere.
The conversion of sunlight, carbon dioxide (CO2), and water into food (sugars) and oxygen is known as photosynthesis. Algae, certain bacteria, and plants all use this process. To assist in the creation of clean fuels and renewable energy sources, this article will examine the basic concepts of photosynthesis and related studies. The two forms of photosynthetic processes are anoxygenic and oxygenic, respectively. Despite the fact that they both operate on very similar principles, oxygenic photosynthesis, which is found in plants, algae, and cyanobacteria, is the more prevalent process.
Light energy converts CO2 into carbohydrates by transferring electrons from the water (H2O) absorbed by plant roots during oxygenic photosynthesis. The CO2 is "reduced," or gains electrons, while the water is "oxidised," or loses electrons, during this transfer. Carbohydrates and oxygen are both created.
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HalpbutIDontActuallyNeedHalp;) *Provided in pictureee*
Brainliest if you my bestieeeeeeee
Answers
Answer:
Lysosome
Explanation:
Answer: Lysosome - Found only in animal
Question 6 options:
The most commonly thought of fossil is when (blank)
seep in over time and replace the (blank)
and other hard tissues of dead animals, leaving stone in the shape of their skeleton.
Answers
Answer:
Permineralization.
Explanation:
Fossils is the marks or part of body left of the organisms when they were alive. It is remains of the organisms on the land. Scientists collect these fossils to study about the different creatures that were once present in the earth. The process of collecting and fossilization is called permineralization.
Which of the following describes erosion caused by glaciers?(2 points)
It forms big ice chunks.
It changes the temperature.
It happens quickly.
It takes a long time.
Answers
Answer:
It takes a long time.
Answer:
it forms big ice chunks but the answer is it take a long time
Explanation:
glaciers are formed by snow that does not completely melt and stratify. when snow is under the influence of super layers it initially turns into pieces of ice and over time turns into glaciers
How can a piece of fruit be compared to planet Earth?
Answers
Answer:
the layers of the fruit are like the layers of the earth
Explanation:
IF SOMETHING IN THE ECOCOLUMN DIED IT WAS CONSUMED
BY?
Answers
If something in the ecocolumn died, it was likely consumed by decomposers.
Decomposers are organisms, such as bacteria, fungi, and detritivores, that break down dead organic material and recycle nutrients back into the ecosystem.
They play a crucial role in the decomposition process, breaking down organic matter into simpler compounds that can be used by other organisms.
Detritivores are larger organisms, such as earthworms, millipedes, and some insects, that feed on dead organic material. They physically break down the dead organism into smaller pieces, increasing the surface area available for decomposition by bacteria and fungi.
By feeding on the dead material, decomposers help to break it down and release nutrients, allowing them to be cycled back into the ecosystem and utilized by other living organisms.
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Water takes a longer time to freeze than alcohol and can absorb a large amount of heat with only a small change in its temperature.
True
False
Answers
Water freezes faster than alcohol due to lower freezing point.
Water takes less time to freeze than alcohol but can absorb a large amount of heat with only a small change in its temperature. Alcohol has -114.7 degrees Celsius of freezing temperature whereas water has freezing point of 0 degrees Celsius.
Water is able to absorb large amount of heat without increasing much in temperature than many substances because water molecules must be made to move faster within the water in order to increase in temperature so we can conclude that water freezes faster than alcohol.
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Answer:
The actual answer is True
Explanation:
MARK BRAINLIEST
Remembering that proteins are made in cells that are 70% water- and water is polar-
describe how you might imagine that a protein spontaneously folds up into a complex 3D
shape.
Answers
Answer:
Hydrophobic packing. Read explanation below.
Explanation:
There are 4 tiers of protein struture. Primary structure is the links of amino acids attached by peptide bonds. The N terminus of one bonds to the C terminus of another.
Secondary structure is the first stage of folding. The amino acid chain can hydrogen bond with itself and can form structures such as Alpha helix and Beta sheet.
Tertiary structure is the interaction between R groups. R is a variable used to denote the presence of some type of compound attached to the basic amino acid structure that makes it chemically unique from the other ones.
Quaterary structure is also between the interaction of R groups, however it is between multiple proteins.
Types of folding that occur in Tertirary and Quaternary structure are the formation of disulfide bonds in an oxidizing enviornment, singularly in the presence of cysteines in a polypeptide. There is also hydrophobic packing, which is when a protein is in an aqueous solution the hydrophobic parts will fold inwards so it is not exposed to the water, and the hydrophillic polar regions will gravitate to the outside.
protein folding spontaneously folds up into a complex 3D shape by Hydrophobic packing.
What is protein folding ?
There are four types of protein structure where the Primary structure of protein is the links of amino acids by forming peptide bonds in which the N terminus of one bonds is present at one end and C terminus at another.
Secondary structure of protein is the first stage of protein folding where the amino acid chain form peptide by forming hydrogen bond with itself and form the structures of Alpha helix and Beta sheet.
Tertiary structure of the protein refers to the interaction between R groups where R is a variable group which is used to denote the presence of compound attached to the basic amino acid
Quaternary structure of the protein is formed between the interaction of R groups between multiple proteins.
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Most of a plant's mass comes from ...
Answers
Answer:
from carbon dioxide
Explanation:
Work in a small group or alone to co that follow mplete this exercise. Use the stratigraphy drawing provided to answer the questions that follow1. Which layer is the oldest? 2. Which layer is the youngest (most recent)? 3. In layer B, you find an unfossilized bone. What chronometric dating method could you use to date this layer? For what date range would this method be appropriate? 4. In layer D, you find a fossilized bone. Layer C and layer E are made of volcanic rock. Based on what is available at the site, what strategy will you use to determine a chronometric date for layer D? (Be sure to specify the exact dating method or methods used and the corresponding applicable age ranges.)
Answers
The stratigraphy drawing can be used to determine the relative ages of the different layers. Radiocarbon dating can be used to date layer B containing an unfossilized bone.
The layer at the bottom of the stratigraphy drawing is the oldest, indicated by the letter "A." The layer at the top of the stratigraphy drawing is the youngest, indicated by the letter "E."
To date layer B contains an unfossilized bone, one could use radiocarbon dating, also known as carbon-14 dating. This dating method relies on the radioactive decay of carbon-14, which is found in organic materials, such as bone. Carbon-14 dating can be used to determine the age of the bone up to approximately 50,000 years ago, which makes it an appropriate dating method for layer B in the stratigraphy drawing.
To determine a chronometric date for the fossilized bone found in layer D, a combination of different dating methods could be used. Since layers C and E are made of volcanic rock, it is possible to use radiometric dating techniques, such as potassium-argon dating or argon-argon dating, which rely on the decay of radioactive isotopes of potassium to argon, to date these layers.
Once the dates for layers C and E have been determined, it would be possible to bracket the age of layer D. Additionally, other dating methods, such as paleomagnetism, which uses changes in the earth's magnetic field to date rock formations, could be used to further refine the age range of layer D. Ultimately, a combination of dating methods would be necessary to determine a reliable chronometric date for layer D.
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Please help!!!
What is the degree of the polynomial 3x^5-6x^2+5x?
A ) 8
B ) 7
C ) 2
D ) 5
Answers
Answer:
D.5
Explanation:
i took the test trust meThe degree of the polynomial 3x^5 - 6x^2 + 5x is 5, so the answer is option D.
A polynomial is a type of algebraic expression that consists of variables, coefficients, and exponents.
There can be one or more terms in a polynomial, and the degree of the polynomial is determined by the highest power of the variable present in it.
For example, the polynomial 3x^2 + 4x + 5 has a degree of 2 since the highest power of the variable (x) is 2. In the given polynomial 3x^5 - 6x^2 + 5x, the highest power of the variable is 5, which means that the degree of the polynomial is 5.
Hence, the correct answer is option D.
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How are these atoms used to make new molecules and what types of molecules are made? Where does the energy come from to produce these new molecules?
Answers
Answer:
Atoms used energy to make new molecules.
Explanation:
Atoms used energy to make new molecules through making bonds with one another because bonds allow atoms to attached tightly with each other. The energy come from the external environment in order to produce new molecules. So we can conclude that energy is the main ingredient needed for making new molecules and this energy is gained from the environment.
Answer:
I would like to help, but what are the new molecules they are producing? And what are the atoms the question is talking about?
Amoeba sisters, video recap, genetic drift. Question number 5
Answers
Identify Draw arrows that point to the location of the chemical bonds
in the water molecule. (Hint: The oxygen atom is red, and the hydrogen
atoms are blue
Answers
Answer:
H2O
Explanation:
Dihydrogen monoxide
2 hydrogen= Dihydrogen
1 Oxygen= monoxide
It is an IONIC BOND!
A disease is introduced to the island which kills only the plants that produce the large seeds. Consider changes in the bird population following the death of all plants that produce large seeds. Which portion(s) of the finch population will be selected against and least likely to have their genes represented in the next generations
Answers
Answer:
Explanation:
Following the death of all plants that produce large seeds, this will lead to a reduction in the population of the finches with large beak sizes since they are the ones that mainly utilized this plant food.
Their portion will be selected against and least likely to have their genes represented in the next generations.
What makes up everything around us?
Explain in detail what all living organisms are made of using the following terms: matter, atoms, elements,
compounds, and chemical bonds.
Answers
Answer:
Matter is anything and everything that has mass. Thats what makes up everything around us
Explanation:
What is herd immunity, and why are vaccines important for achieving herd immunity?
Answers
Answer:
Herd immunity is a form of indirect protection from infectious disease that can occur with some diseases when a sufficient percentage of a population has become immune to an infection, whether through vaccination or previous infections, thereby reducing the likelihood of infection for individuals who lack immunity.
Explanation:
Vaccines create immunity without causing illness or resulting complications. Herd immunity makes it possible to protect the population from a disease, including those who can't be vaccinated, such as newborns or those who have compromised immune systems.