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Verizon [17]
3 years ago
11

What are the conditions required for natural selection? Check all that apply.

Biology
1 answer:
aleksley [76]3 years ago
7 0

reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population.

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Describe how cohesion and adhesion contribute to the upward movement of water through a plant.
Lilit [14]

Answer:

Both Cohesion and adhesion play an important role in the upward movement of water through a plant.

Explanation:

Water is absorbed by the roots and transported by xylem tissue to various parts of a plant body such as stem ,leaf .

                  During the transportation of water molecules through the xylem tissue formation of hydrogen bond occur between the water molecules. A single hydrogen bond is weak but collectively they exert a very strong interaction.As a result a water column is established in the xylem tissue. This is called cohesion.

                    Adhesion deals with the interaction of water column with the wall of the xylem tissue.

               

8 0
4 years ago
All proteins are made up of amino acids and have many, many functions in a cell.
lubasha [3.4K]

Answer:

The gene, or sequence of DNA, ultimately determines the unique sequence of amino acids in each peptide chain. A change in nucleotide sequence of the gene's coding region may lead to a different amino acid being added to the growing polypeptide chain, causing a change in protein structure and therefore function.

6 0
3 years ago
n cancer cells one allele of the tumor suppressor gene p53 is frequently mutated so that the protein is inactive, not produced,
artcher [175]

Answer:

If the cancer cell's DNA is sequenced than the anticipated results will be that the cytosines in or close to the promoter region will get methylated. It has been stated that in the cancer cells one allele of p53 is mutated and the other allele, however, of exhibiting an intact promoter, does not express the protein.  

Thus, it shows that the expression in the other allele gets suppressed by methylation rather than by mutation. Methylation generally takes place in CpG islands in or close to the promoter region and therefore inhibits transcription.  

5 0
4 years ago
Which of the following statements best describes how a corn plant comes to produce the Bt toxin?
Anna35 [415]
Well its easy the Bt gene is inserted into one plant cell by using a bacterial plasma.
4 0
3 years ago
Read 2 more answers
Monosaccharides from polymers through the formation of ———— bonds
Alex_Xolod [135]
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3 0
4 years ago
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