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drek231 [11]
3 years ago
13

What are the locations in the cell cycle where proteins can initiate or stop the next phase of the cycle called?

Biology
1 answer:
Sonja [21]3 years ago
7 0

Answer:

A checkpoint is one of several points in the eukaryotic cell cycle at which the progression of a cell to the next stage in the cycle can be halted until conditions are favorable.

Explanation: Or

Oscillations in the activities of various cyclin-Cdk complexes leads to the initiation of various cell-cycle events. Thus, activation of S-phase cyclin-Cdk complexes initiates S phase, while activation of M-phase cyclin-Cdk complexes triggers mitosis.

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During translation, the tRNA molecule carrying the correct amino acid corresponding to its anticodon sequence must base pair wit
katovenus [111]

Answer:

The tRNA would be unable to read the mRNA CODON, and will be unable to carry its corresponding amino acid

Explanation:

Protein synthesis occurs in two major stages; transcription and translation. Transcription involves the synthesis of a mRNA molecule while translation involves reading the sequence of the mRNA in order to synthesize amino acids that forms protein. Let's look at translation in details. Translation occurs with the help of a type of RNA molecule called transfer RNA (tRNA) present in the RIBOSOME (site of protein synthesis).

The tRNA possesses a group of three nucleotides called ANTICODON, which it uses to read the mRNA codon that is complementary to it i.e. an anticodon UAC will read mRNA codon AUG. The tRNA binds to the mRNA molecule in order to assess its nuceleotide sequence. Once, a complementary anticodon succesfully reads a particular mRNA codon, it carries the amino acid encoded by the mRNA codon it reads to the growing polypeptide chain. This is the normal translation process.

However, as stated in the question, that if a wrong anticidon successfully binds to a codon. This means that the anticodon that binds to the mRNA codon is not complementary to it. What would happen in this case is that the Anticodon will be unable to read that particular codon it binds to because the complementary base pairing rule is used to read i.e. A-U, G-C. Once, the anticodon cannot read the mRNA codon, the tRNA will also be unable to carry the amino acid that is encoded by that CODON.

6 0
4 years ago
The type of blood vessel that allows easy passage of oxygen, carbon dioxide, nutrients, and waste through its cell wall is the _
Sindrei [870]

The type of blood vessel which has the function of having to allow passage easily of other substances such as nutrients, carbon dioxide, oxygen and even waste in the cell wall is known to be the capillary.  It is known to be a branching blood vessel in which it has a role of being a network with both the venules and arterioles.

7 0
3 years ago
Listening is a more complex process than hearing.
Igoryamba

Answer:

True

Explanation:

3 0
3 years ago
Increased carbon in the oceans has caused the pH levels of the water to decrease. What is the largest impact of this ocean acidi
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The answer is A as corals are very delicate to their surroundings 
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Photosynthesis and cellular
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Answer:

cellular respiration and photosynthesis work together by taking in energy such as the sun, or Co2 to convert that into energy and oxygen right back into the atmosphere.

Explanation:

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