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2 years ago

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You are looking at a cell in a microscope. You see 4 replicated chromosomes, all different lengths, lined up end-to-end in the m

iddle of the cell. Given only this information, what process(es) could this cell be in the middle of

1 answer:

sergiy2304 [10]2 years ago

5 0

Answer:

this cell could be in the process of mitosis, specifically metaphase.

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Select the correct answer from each drop-down menu. rna interference is a mechanism of eukaryotic gene regulation. in this mecha

rosijanka [135]

The dicer enzyme processes dsRNA and forms siRNAs, which suppress the expression of target genes by cutting mRNA. 1) siRNA 2) RNA.

<h3>What are siRNA fragments?</h3>

siRNA means small interfering RNA. This is a silencing RNA molecule involved in the RNA interference mechanism, intervening in the expression of a specific gene.

siRNAs are complementary double-stranded RNA molecules composed of about 20-21 nucleotides. siRNA originates from a long double-stranded RNA (dsRNA).

The dicer enzyme cuts dsRNA molecules and produces siRNA. siRNAs suppress the expression of target genes when cutting messenger RNA.

siRNAs suppress the expression of target genes by cutting the complementary messenger RNA (mRNA) into two halves. This is accomplished by the interaction of the siRNA with the RISC complex (RNA-induced silencing complex).

The two mRNA halves are later degraded by the cellular machinery, leading to the suppression of the gene expression.

siRNAs also participate in other pathways related to RNAi, such as in antiviral defense or in the chromatin structure organization.

RNA interference is a mechanism of eukaryotic gene regulation. In this mechanism, the enzyme dicer cuts dsRNA into smaller fragments called (1) siRNA, which form a complex with RISC and degrade specific (2) RNA.

You can learn more about siRNA at

brainly.com/question/7508257

#SPJ1

5 0

2 years ago

The salivary glands start the process of digestion.<br><br> True False

Ratling [72]

Yes the answer is true it is the start of the digestion process.+

8 0

3 years ago

Read 2 more answers

What must the cell do first <br> In order for a cell to divide successfully

algol [13]

The cell has to go through the interphase
Interphase is split into g1, synthesis, and g2
G1 is most of the cells life, where it replicates organelles
Synthesis is where the DNA replicates, 23 chromosomes become 46
G2 is where the cell gets ready for mitosis (active cell division) here the microtubles are produced
Mitosis is split into prophase, metaphase, anaphase, telophase, and cytokinesis

7 0

3 years ago

Read 2 more answers

In regions of the cardiovascular system where there is steady laminar blood flow, the shear stress on cells lining the walls of

Lynna [10]

Answer:

$250$ N/m2

Explanation:

Shear stress on cells lining the walls of the blood vessels is equal to $20$ 20 dyne/cm2

In terms of Newton/square meter, shear stress is equal to

$20*\frac{dyne}{cm^2} (\frac{10^{-5}N}{1 dyne} )*(\frac{1 cm^2}{10^{-4}*m^2} )\\= 2.0$ N/m2

Shear modulus is equal to shear stress divided by shear strain

Thus, shear modulus is equal to

$= \frac{2.0}{0.008} \\= 250$ N/m2

7 0

3 years ago

why does oxygen moves onto red blood cells when they are near the lungs but moves off of red blood cells when they are near othe

trapecia [35]

Answer:

Explanation:

Oxygen moves onto red blood cells when they are close to the lungs because oxygen needed by cells of other parts of the body is carried by the red blood cells and the only the lungs makes this oxygen available to the body and also ensures to remove other harmful gases such as CO2. Thus, red blood cells must be able to absorb oxygen in the lungs, pass through narrow blood vessels, and release needed oxygen to respiring body cells.

5 0

3 years ago