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LenKa [72]
3 years ago
5

John is blind and is therefore unable to detect the light that normally sets the suprachiasmatic nucleus (SCN). If he is like mo

st blind people:
Biology
1 answer:
11Alexandr11 [23.1K]3 years ago
8 0
If he is like most blind people he will certainly not see the answer to your question. I’m sorry
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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
Cells transport molecules into the cell in many different ways. One method is through endocytosis, shown in the model. In endocy
Fudgin [204]

Answer:

This is because fluids have a polar nature, so they couldn´t cross the lipidic bilayer that constitutes the plasma membrane

Explanation:

Plasma membranes are contituted by lipid bilayers. These kind of compounds are hidrophobic (they reject water) and don´t permit the freely passage of hidriphilic molecules that can disolve in water, constituing fluids. Because of that cells developed transport mechanism like endocytosis.

4 0
3 years ago
Read 2 more answers
A squirrel and an oak tree are both examples of individual?
maxonik [38]
<span>A squirrel and an oak tree are both examples of individual organisms</span>

Hope I Helped You!!! :-)

Have A Good Day!!!
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3 years ago
Danny loves spicy tuna rolls, but has recently developed an allergy to the polysaccharides found in rhodophytes. How should he m
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Ask to get his sushi without red algae
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Describe the complications that occur most frequently during calving, and recommend the best practices for assisting cows during
IceJOKER [234]

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Calving difficulty, technically called dystocia, is a major cause of death loss in cow-calf herds.

Explanation:

did research

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3 years ago
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