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alisha [4.7K]
3 years ago
7

Which of the following steps in preparation of a fully mature eukaryotic mRNA occurs within the nucleus?

Biology
1 answer:
kogti [31]3 years ago
7 0

Answer: e. All of the above

Explanation:

The processing of mRNA  to a fully mature eukaryotic mRNA requires addition of a  5' cap (Capping) and 3' poly(A) tail ( polyadenylation) to the ends of the transcript, and removal of any intervening introns by splicing. Once processing is completed, the mRNP, which consists of mRNA and associated  proteins, is ready for export from the nucleus.  

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How many and what are the processes that seed plants use to reproduce.
Luba_88 [7]
Plants reproduce through the process of fertilisation. Fertilisation is the process where female and male cells join together to form an embryo inside the seed. The seed protects the embryo in preparation for germination when conditions permit the plant to produce new plants.

Seed plants are classified into two types to determine reproduction. First are the Angiosperms, this type of seed plant has flowers that have special structures for reproduction. Pollens are made by male cells, while ovules are made by female cells. Pollens are carried out through the process of pollination (e.g. wind blows, insects carrying pollen). Most angiosperms that don’t undergo pollination develop intro fruits. If it goes into pollination they become new flowering plants.
<span>
Second classification is the Gymnosperms, which are seed plants that are held in cones. Gymnosperms like Angiosperms also have male and female reproductive cells. Reproduction also occurs through pollination but most gymnosperms are trees. The best example of a gymnosperm are pine cones.  </span>
5 0
3 years ago
What is the MAIN use of amino acids by the cells?
Setler79 [48]

Explanation:

They're vital for functions such as protein synthesis, tissue repair and nutrient absorption for the body. Some may also prevent muscle loss and improve mood, sleep, athletic performance and weight loss.

5 0
3 years ago
What type of energy is carried by electromagnetic radiation, such as radio waves, UV light and x-rays?
Sloan [31]

electrical energy

Explanation:

In physics, electromagnetic radiation (EMR) consists of waves of the electromagnetic (EM) field, propagating through space, carrying electromagnetic radiant energy. It includes radio waves, microwaves, infrared, (visible) light, ultraviolet, X-rays, and gamma rays.

3 0
2 years ago
The term "Protista" in Latin means "the first." Why did biologists use this word as the name for organisms in kingdom Protista?
julia-pushkina [17]

Answer:

I believe that the protists were the first organisms on earth. And the other 5 kingdoms then came from the protists.

I think that's it! :)

5 0
3 years ago
Individuals producing an abnormal form of the extracellular matrix protein, fibrillin, is a result of ______.
erastova [34]

Answer:

Indivisuals with producing an abnormal form of extracellular protein fibrillin are suffering from Marfan syndrome ehich is caused by genetic mutation in the FBN1 gene.

Explanation:

Gene mutations in FBN1 gene results in the production of an abnormal extracellular matrix fibrillin-1 protein that cannot function properly. These gene mutations basically reduce the amount of fibrillin-1 produced by the cell, alter the structure of fibrillin-1, or causes the impairment of the transport of fibrillin-1 out of the cell.

As a result, protein is poorly incorporated into extracellular matrix. Hence, indivisuals with Marfan syndrome present following symptoms

Tall stature.

Disproportionately long arms, legs and fingers.

Sternum either protrudes outward or dips inward.

Arched palate and crowded teeth.

Heart murmurs.

Extreme nearsightedness.

6 0
3 years ago
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