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love history [14]
10 months ago
10

explain why gene expression is regulated, considering the advantages of regulating enzyme activity versus transcriptional contro

l.
Biology
1 answer:
Natasha_Volkova [10]10 months ago
3 0

Because genes must be able to adapt to either the internal or exterior environment, they are regulated. Since DNA duplication begins with transcription, there are benefits to controlling transcription precisely.

The process of activating and deactivating genes is referred to as gene regulation. During development, genes are turned on and off in various patterns to give a brain cell a different appearance and behaviour from a liver cell or a muscle cell. There are two types of control . Limiting the amount of mRNA that can be created from a single gene is one way to control transcription. Another way is through post-transcriptional processes that affect how mRNA is translated into proteins.

To learn more about gene click here:

brainly.com/question/29367774

#SPJ4

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Match the action of the av and semilunar heart valves with the correct statement regarding pressure differences in the heart cha
Gekata [30.6K]
I found a similar question. If the attached document is the same as your supposed question, then my answer are below.

AV valves open - atrial pressure is greater than ventricular pressure

AV valves closed - Ventricular pressure rises above atrial pressure

Semilunar valves closed - ventricular pressure is lower than arterial pressure

Semilunar valves open - pressure in the ventricles is greater than the pressure in the great arteries



7 0
3 years ago
During the process of_____,a molecule such as glucose must use a protein channel to cross through a cell membrane.
STatiana [176]
Facilitated diffusion.
5 0
3 years ago
Compare and contrast an active solar heating system with a radiator system.
Vesnalui [34]

Answer:

A system that uses the sun's energy without requiring mechanical devices (pumps or fans) to distribute the collected heat are called solar system while radiator system uses fuel to heat the water. in active solar heating system, the SUN's energy used to heat water.

7 0
2 years ago
Which hormone does the sympathetic nervous system release to increase heart rate.
sertanlavr [38]

The sympathetic nervous system releases hormones known as catecholamines which increase the heart rate.

<h3>What is a heart rate? </h3>

it is the number of contractions of the heart per minute.

<h3>What are catecholamines?</h3>

These are the neurotransmitters that have a catechol and a side chain that is an amine.

<h3>Which catecholamines are released by the sympathetic nervous system?</h3>

Epinephrine and norepinephrine are the catecholamines that are released by the sympathetic nervous system to increase the heart rate.

<h3>Where are these hormones released?</h3>

These hormones are released in the blood.

<h3>How does this hormone increase the heart rate?</h3>
  • "These hormones are released at the neuromuscular junction of the cardiac nerves."
  • "They shorten the repolarization period."
  • This speeds up the rate of depolarization and contraction and thus the heart rate is increased.

To learn more about sympathetic nervous system, hormones and heart rate here,

brainly.com/question/1155838

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8 0
2 years ago
Read 2 more answers
3. Describe each one of the following types of fractures:
Pavlova-9 [17]
Simple: The bone fracture does not break the skin
Compound: when the bone punctures the skin
Incomplete: the bone does not break completely
Impact: The bone fracture impacts another bone
Comminuted: The bone breaks into 3 or more pieces
8 0
2 years ago
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