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Soloha48 [4]
3 years ago
11

Small interfering RNA, also known as RNAi, is single-stranded RNA that binds to mRNA with a RNA-induced silencing complex protei

n. According to the model, what is the most likely effect of RNAi on the expression of the mRNA?
Biology
1 answer:
muminat3 years ago
7 0

Answer:

The expression of the mRNA decreases.

Explanation:

The RNAi binds to some proteins forming a silencing complex. This complex binds to the target mRNA (of which the RNAi is complementary) and cleaves it (cuts it). The cell will detect the generated fragments of mRNA , recognize they are aberrant and will thus degrade them.

All in all, this mechanism silences (reduces) the expression of the mRNA, because it will be degraded instead of translated into protein.

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The nurse is caring for a very anxious child whose pain has not been manageable. the parents stay in the child's room, crying an
Rufina [12.5K]
I think the nurse should not allow the parents to do their crying and yelling or exclude them until the anxious child has calmed down as the child cannot deal with her/his  pain as long she/he is stressed out by the parents behaviour. 
3 0
3 years ago
A school’s environmental club wants to reduce the ecological footprint that the student body creates annually. Which step would
Monica [59]

<u>Answer:</u>

Composting food scraps in the cafeteria to reduce landfill waste would have the greatest impact in reducing the school’s ecological footprint.

Option: (C)

<u>Explanation:</u>

  • Reducing the ecological footprint means bringing about some changes in lifestyle and living to improve the biocapacity.
  • Compositing food scraps in the cafeteria to reduce landfill waste is the best option that the environmental club can apply to reduce the school's ecological footprint.
  • This step can help to increase productivity of soil as well as reduce waste in landfill site.
  • The option of incineration of trash causes air pollution. Likewise, reducing recycling bins will not be helpful in decreasing the ecological footprint.
  • Instead, it causes the unmanaged collection of trash in school environment.
4 0
3 years ago
The diploid number of chromosomes in the mustard plant, Arabidopsis thaliana, is 10. Knowing this, answer the following question
lukranit [14]

Answer:

10 chromosomes/sister chromatids

Explanation:

Prophase is the first stage of cell division (mitosis). Prior to the cell entering the actual division stage, it undergoes a phase where it prepares its content and most importantly undergo the duplication of its genetic material (DNA). This DNA are found as chromosomes. It undergoes replication of its DNA in the S-phase of interphase stage.

Since Arabidopsis thaliana has 10 chromosomes, and each chromosome holds one DNA molecule, 10 molecules of DNA will be present in the mustard plant's genome. These 10 molecules of DNA will be replicated on another copy of chromosome which is identical to the template. This chromosomes are called SISTER chromatids i.e. replicated chromosome. Each sister chromatids are held together at the centromere and are considered one individual chromosome until they separate during anaphase stage.

Hence, at the Prophase stage, before separation, each sister chromatid (replicated chromosome) is considered as one chromosome. Thus, in the mustard plant with 10 chromosomes, it will possess 10 sister chromatids or chromosomes at the Prophase stage.

N.B: When sister chromatids separate during anaphase stage, they will be regarded as individual chromosomes.

6 0
3 years ago
Why do charged molecules have difficulty crossing a phospholipid bilayer?
jek_recluse [69]
The answer to this question would be because phospholipid is polar has <span>a </span>charge.

Since phospholipid is polar, it can attract molecule with a charge. That will cause the molecule cant move easily pass the membrane. The hydrophobic molecule doesn't have charge, so the molecule can pass through the phospholipid membrane if it small enough.
8 0
3 years ago
Read 2 more answers
The green data point at June 2011 shows a proportional change of about________ , which means that the native fish population____
Orlov [11]

Answer: The appropriate information that will be used to fill the blanks includes the following respectively:

-1.7

- increased

-70%

- 0.5

- decreased

- 50%

Explanation:

The green (topmost) data point at June 2011 shows a proportional change of about 1.7, which means that the native fish population INCREASED by about 70 percent when 95 percent of the lionfish were removed. In contrast, the orange data point at June 2011 shows a proportional change of about 0.5, which means that the native fish population DECREASED by about 50 percent when only a quarter of the lionfish were removed (a result that was almost the same as when none of the lionfish were removed).

The native fishes are being haunted by the lion fish, from the results, removing just few of the invasive lion fish will not make a difference. In other to help the native fish survive, many of the lion fish has to be removed.

8 0
4 years ago
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