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Svet_ta [14]
2 years ago
13

A nonsense mutation has occurred, resulting in a truncated, nonfunctional product in the mutant. In a eukaryotic cell, a gene th

at is initially transcribed is 1500 nucleotides in length. The mature mRNA for the product is 1200 nucleotides in length. What is the most probable reason for the discrepancy?
Biology
1 answer:
Ymorist [56]2 years ago
7 0

Answer:

Removal of introns

Explanation:

the reduction in the sequence is as a result of the removal of introns. Introns are actually non-coding regions and do not code for proteins. they are usually spliced out.

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Hormones are secreted and released into the blood by _____.
Debora [2.8K]
Glands is one of the possible answers
3 0
3 years ago
Describe the four combinations of active or inactive regulatory proteins that could be present at any time in the cell
Natalka [10]
<h2>Answer:</h2>

Following are the four combinations of active or inactive regulatory proteins that could be present anytime in the cell:

  1. Active repressor , Active activator
  2. Active repressor, Inactive activator
  3. Inactive repressor, Active activator
  4. Inactive repressor, Inactive activator
3 0
3 years ago
(a) It is possible to measure a patient’s heart rate by either palpating their peripheral pulse, by observing their ECG, or by l
Dimas [21]
B)<span>When you listen to the heart sounds, you are hearing the flow of blood which stops abruptly when a heart valve closes. This produces the "lub-dub" sounds. 1st heart sound (when the Mitral Valve closes) as the ventricle contracts (systole) and then 2nd heart sound (when the Aortic Valve closes) and the ventricle starts to fill again (diastole)
</span><span>The pulse is the wave of pressure you can feel through the artery walls. This denotes systole.
</span><span>The ECG's QRS complex is the electrical signal that tells the Ventricles to contract. You can see that the QRS occurs right at the beginning of systole and triggers Isovolumetric contraction.
</span><span>So the QRS on the ECG, the pulse wave you can feel (ie. the rise in aortic pressure) and the 1st heart sound all signify SYSTOLE.
</span><span>there a delay between systole of the ECG and the resulting pulse felt in the finger (R-Pulse) </span>because it takes a little bit of time for the pressure to transmit through the body, as the finger is not on the heart (if it was there would be no delay)
7 0
3 years ago
While walking down the street, a cat jumps out of an alley into the pathway of an adult. They note that the man's heart is "raci
Sedaia [141]

Answer: The palpating heart race response is due to the sympathetic nervous system controlling the body's fight-or-flight reactions. 

Explanation:

The sympathetic nervous system is in charged of controlling the body's fight-or-flight reactions. When facing a threat, these responses defaultly prepare our body to flee from danger or face the threat head-on.

Many of the physiological responses you experience during times of emotional streaming, such as sweaty palms or a racing heartbeat, are regulated by the sympathetic nervous system, a branching of the autonomic nervous system.

5 0
3 years ago
A farmer notices that the corn in her fields is growing slowly. So she adds twice the normal amount of fertilizer to each field.
Vikentia [17]
<h2>The correct answer is: Eutrophication.</h2>

Explanation:

  • Fertilizers are inorganic o organic nutrients highly rich in elements like nitrogen, potassium and phosphorus which are essential for the growth of plants.
  • The application of excess fertilizers in the soil causes the surface run off as well as leaching of these nutrients into the soil from where it is gradually transferred into the nearby water bodies, in this case the lake adjacent to the farmer's property.
  • In the lake, these nutrients promotes the growth of plants like algae.
  • The excessive growth of algae in the lake disturbs he ecological balance of the lake and causes a dearth of oxygen in it. This phenomenon is said to be called Eutrophication.
  • The reduction in the level of oxygen in the lake causes the animals, like fishes, in it to gradually die.
4 0
3 years ago
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