What's the main purpose of the placenta

Answers

Answer 1

Answer: The main purpose of the placenta is to give the nutrition that the fetus needs from the mother. The blood of the mother that contains all the nutritious needs pass through the placenta, then through the umbilical cord before reaching the baby.

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Create a sentence explaining how amino acids form proteins.

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Within a protein, multiple amino acids are linked together by peptide bonds, thereby forming a long chain. Peptide bonds are formed by a biochemical reaction that extracts a water molecule as it joins the amino group of one amino acid to the carboxyl group of a neighboring amino acid.

Sample answer: Amino acids are monomers that combine to form polymers called proteins.

Cells in your hair follicles produce the protein keratin, but cells in your liver do not produce keratin. Which statement explains these differencesA). Hair follicles contain recombined DNA, which create the protein keratin
B). Genes are expressed differently in liver cells and hair follicles
C). Hair follicle cells contain different genes from liver cells
D). Hair follicle cells do not produce DNA, but liver cells do

Answers

Answer:

B). Genes are expressed differently in liver cells and hair follicles

Explanation:

In given organisms all the cells of the body have the same number of genes, however, their activity varies due to differential expression of genes.

The differential expression of genes is regulated by several factors, such as histone modifications, DNA, etc. which may silence or activate the genes differentially in different cells.

Since the hair cells and liver cells of the organisms will have the same genes, they only vary due to the differential expression fo the genes.

Answer:

B) Genes are expressed differently in liver cells and hair follicles

Explanation:

Cell differentiation helps produce different cells with different functions that express different genes in the genome.

Liver cells and hair follicles are an example of cell differentiation creating different functions in multi-celled organisms.

Which statement about ionic bonds is correct

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Answer:

Explanation: Ionic bonding is the complete transfer of valence electron(s) between atoms. It is a type of chemical bond that generates two oppositely charged ions. In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion

What basic ring structure is common to all steroids?

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the basic ring structure that is common to all steroids is the four ring structure. the steroid is a type of lipid that contains four rings of carbon atoms. these four ring structure is they are derived to a polycyclic four ring. The four ring of the steroid is arranged in a very specific molecular configuration.

Volcanic eruptions cause vog,which is a form of air pollution that contains the toxi gas sulfur dioxide so2. Vog gets pushed arouned by wind and can created rain acid. Explain how sciencetist might investigate the affects of vog on agriculture in the area

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Answer:

Does vog (volcanic smog) impact plants and animals? | U.S. ...

When vog mixes directly with moisture on the leaves of plants it can cause severe chemical burns, which can damage or kill the plants. Sulfur dioxide (SO2) gas can also diffuse through leaves and dissolve to form acidic conditions within plant tissue.

Explanation:

How does meiosis I differ from meiosis II

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Meiosis I is identical to mitotic division resulting in a copy of a diploid cell. Meiosis II is when the cells split up making 4 haploid daughter cells.
Hope this help :)

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