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levacccp [35]
3 years ago
11

Need help with these questions answer what you can

Biology
1 answer:
OlgaM077 [116]3 years ago
7 0

Answer 1:

The mutation shown is point mutation.

A point mutation can be described as a type of mutation in which only a single nucleotide of a sequence is either:

  • changed
  • added
  • deleted

The addition of the single nucleotide will cause the entire open reading frame to be changed. The amino acid sequence will change entirely from the position where the insertion mutation occurs. This is because the code for making amino acids works on a three base pattern. The reading of the three bases will be altered completely by the addition of just a single nucleotide.

Answer 2:

No, the resulting protein will not be altered.

The genetic code occurs in a linear sequence with triplet format. The change in a single base will cause the wrong amino acids to be formed. However, if the different code is common for the same amino acid then there will be no effect on the amino acid being formed.

<em>For example, the code GUA makes the amino acid Valine. If a mutation occurs and the code becomes GUU instead of GUA, then the resulting amino acid formed will also be Valine. Hence, there will be no alternation in the formation of the protein.</em>

Answer 3:

Melanoma cancer is the type of skin cancer which is associated with cancer from sun light. It is mainly caused due to the harmful ultraviolet rays which act as a mutagen.

<em>The mutations might keep coming back because although the growth have been removed, the other skin cells of the body might still have the mutation in them. As a result, growth will be seen again in the skin cells which might occur again and again. </em>

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Explanation:

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Which statement best describes the hydrosphere?
vekshin1

Answer: the water on or surrounding the surface of the globe, including the water of the oceans and the water in the atmosphere.

Explanation: The hydrosphere includes water that is on the surface of the planet, underground, and in the air. A planet's hydrosphere can be liquid, vapor, or ice. On Earth, liquid water exists on the surface in the form of oceans, lakes and rivers. It also exists below ground—as groundwater, in wells and aquifers.

8 0
3 years ago
The antibiotic rifampicin blocks transcription in many bacteria. In the presence of the antibiotic, adding sigma factor has no s
mariarad [96]

Answer:

transcription initiation

Explanation:

Transcription is a process by which genetic information from DNA is used to synthesize an RNA molecule, usually, a messenger RNA (mRNA), which is subsequently utilized to synthesize a protein by a process called translation. Transcription in prokaryotes has three steps:

1-Initiation: the RNA polymerase is a multisubunit enzyme (holoenzyme) composed of two α, one β, one β’ and one ω and σ subunits (α2ββ’ωσ). This holoenzyme binds to the promoter region of the template DNA strand.

2-Elongation. The sigma σ factor of the holoenzyme is released and the complex and the core enzyme (α2 ββω) moves along the template strand, thereby producing an mRNA sequence

3-Termination. This step can be Rho-dependent, where a protein named "Rho" recognizes the termination site and stop transcription, and Rho-independent (transcription continues until the termination sequence is reached).

In consequence, Rifamycin is likely to block the initiation of transcription because the core RNA enzyme needs to bind the sigma factor (σ) for initiation of transcription in bacteria.

8 0
3 years ago
CR endurance is determined by a. the amount of oxygen the body is able to utilize per minute of physical activity. b. the length
Amanda [17]

Answer:

The answer is A.

Explanation:

The CR endurance that is given in the question, or cardio respiratory endurance, can be described as the heart's, the muscles' and the lungs' ability to be able to work together effectively through extended periods of physical activity and it can be determined by measuring the amount of oxygen that the body uses in a minute during the said physical activity.

I hope this answer helps.

5 0
3 years ago
Why do we call the clavicle as the beauty bone?
nata0808 [166]
Clavicle is also called as collar bone.These are the long bones which connects the arm to the case of the body.it keeps the arm to move freely.
therefore,
Clavicle is called as the beauty bone.
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5 0
3 years ago
Are viruses always fatal?
aalyn [17]

Answer:

No

Explanation:

The short answer is no, but the more complex one is that it depends on the virus. In the case of *****-19, the answer is no, as many people have recovered from  it. But almost any viral infection can lead to sepsis, which is a chain reaction that can trigger inflammation throughout the body and damage multiple organs. This, however, is very rare, though potentially fatal.

5 0
3 years ago
Read 2 more answers
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