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Yuri [45]
3 years ago
5

MiRNAs are involved in

Biology
1 answer:
Alik [6]3 years ago
5 0

Answer:

miRNAs are involved in A. transcriptional silencing

Explanation:

MiRNAs are single-stranded RNAs that are involved in gene regulation. This type of RNA allows the silencing of genes through complementarity with a transcribed RNA, thus promoting their degradation and reducing their translation levels.

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How are primary and secondary succession similar?
anzhelika [568]

Answer;

B. Both primary and secondary succession involve ecosystems recovering from a disruptive event.

Explanation;

-Primary succession occurs following an opening of a pristine habitat, for example, a lava flow, an area left from retreated glacier, or abandoned strip mine. In contrast, secondary succession is a response to a disturbance, for example, forest fire, tsunami, flood, or an abandoned field.

-Primary succession begins in barren areas, such as on bare rock exposed by a retreating glacier. Secondary succession follows a major disturbance, such as a fire or a flood.

8 0
4 years ago
Read 2 more answers
How do carrier proteins differ from channel proteins in their role as gatekeepers of the cell? carrier proteins expend energy to
Lelu [443]
<span>"Carrier proteins bind to the substances they transport across the membrane via facilitated diffusion, whereas channel proteins provide a pore for substances to move across the membrane via facilitated diffusion."

This is the most correct option.
The main difference, when comparing these two gates of transportation across a membrane through the same process (via facilitated diffusion or any other), is that carrier proteins bind to the substances they transport and only communicate with one environment of the cell (whether intracellular or extracellular) at the time, while channel proteins let substances move across the membrane without any binding being opened to both cell environments.</span>
4 0
4 years ago
A hiker is climbing up a steep path. Halfway up, he finds the muscles in his
scoray [572]

Answer:

A. He has a large buildup of lactate in his muscles.

Explanation:

Ideally, our body cells, via the process of aerobic cellular respiration, need oxygen to break down glucose. However, during rigorous activities or exercises, oxygen can become unavailable for use. In this case, the body cells switch to use another way of cellular respiration, which is FERMENTATION.

This fermentation causes a build up of lactic acid/lactate (its byproduct) in the cells of the muscles being used, which physically causes a burning and aching sensation just as the case of this hiker. The climbing of the steep path is causing causing the fast usage of oxygen in his cells.

5 0
3 years ago
What do lysosomes produce that are essential to their function
gulaghasi [49]
Lysosomes is to create a digestive enzyme that would be used during waste removal.
3 0
3 years ago
Which factor makes enzymes well-suited to the role of catalyst in a biochemical reaction?
Firdavs [7]

Answer:

Enzymes can be reused because they do not permanently bond with substrates.

Explanation:

5 0
3 years ago
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