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myrzilka [38]
3 years ago
14

Rem sleep ends when there is a rise in _____, which increase the level of forebrain activity nearly to the awakened state.

Biology
1 answer:
Vera_Pavlovna [14]3 years ago
8 0
Rem sleep ends when there is an increase in the level of serotonin and norepinephrine secreted.<span />
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Once a stop codon is reached, no more tRNAs will bind. What protein will bind instead?<br>​
vovangra [49]

Answer:

Once a stop codon is recognized the so formed protein molecule will bind to one molecule of water in place of tRNA.

Explanation:

During the termination phase of translation when the ribosome recognizes any one of the 3 stop codons such as UAA,UAG and UGA  at that time the polypeptide that is formed will get no tRNA to bind.

      As a result instead of tRNA a water molecule binds with the growing polypeptide thus tRNA molecule get detached from the polypeptide,the polypeptide is released from the translation machinery by the activity of various protein called release factors.

     Then the mRNA and two subunits of ribosome are also released from the translation machinery.

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3 years ago
Before inserting a gastric or enteric tube, the nurse determines the length of tubing that will be needed to reach the stomach o
baherus [9]
The distance measured from the tip of the nose to the earlobe and from the earlobe to the xiphoid process

Inserting NGT can gain access to the stomach and its content. Draining of stomach content is possible, decompression or obtain a specimen of the gastric content is possible. This can allow gastric immobility and gastric obstruction to be identified. This is usually contraindicted to patients with facial trauma due to possibility of inserting the tube intracranially. Complications that can be expected are aspiration, trauma.
3 0
3 years ago
The diploid chromosome number in a certain species of fish is 20. How many chromosomes would normally be found in bone cell of t
ANEK [815]

Answer:

the naswer is is b

Explanation:

7 0
3 years ago
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How does the parfocal characteristic of a microscope affect the way a slide is viewed?
Vinil7 [7]

Parfocal refers to the idea that an image should maintain focus when shifted between distinct objectives. You should only make precise focus adjustments after the image is in focus.

<h3>Why is parfocal imaging crucial in microscopy?</h3>

Parfocal goals are those that can be modified with little to no focussing. It is convenient when the lenses stay in focus when you change the magnification on your microscope. When a microscope has named objectives, this is feasible.

The picture will stay in focus while switching from a lower-power objective to a higher-power objective because high-quality microscopes are parfocal. The oil reflects more light because it has the same refractive index as glass.

learn more about parfocal refer

brainly.com/question/24732114

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8 0
2 years ago
Phase II drug degradation reactions involves linking of conjugates to the drugs are ___
Sergio [31]

Answer:

Hi!

The answer is (C) Both (a) and (b)

Explanation:

Drug Metabolism:

  • Drug metabolism is divided into two steps: Phase 1 and Phase 2 reactions.
  • Phase 1 reactions involve the degradation or formation of functional groups.
  • Phase 2 reactions involve the conjugation of the drug or its Phase 1 intermediate with a polar conjugating molecule. Phase 2 generally performs the detoxification step in the drug degradation process.
  • Phase 2 or conjugation reactions are further divided into 2 types:
  • Type 1: Glucoronidation and sulfonation: An activated conjugating molecule such as glucoronic acid, sulfate or glutathione etc. is combined with the drug to form a conjugated molecule.
  • Type 2: Amino acid conjugation: An activated drug or substrate is conjugated with an amino acid such as glycine or glutamine.

Glutathione Conjugation:

Glutathione is a tripeptide found in most tissues, particularly in the liver. It performs important detoxification functions for all cells. The enzyme, glutathione S-transferase conjugates glutathione with drug intermediates to form a drug-glutathione conjugate. This conjugate can easily be excreted through bile or urine.

Amino acid Conjugation:

This is an important reaction in xenobiotic biotransformation; particularly for xenobiotics with carboxylic group or an aromatic hydroxylamine groups. Drug intermediates combine with glycine or glutamine to form an amino acid conjugate.

3 0
4 years ago
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