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ELEN [110]
2 years ago
9

A new drug is developed which selectively cleaves covalent bonds between two sulfur atoms of non-adjacent amino acids in a polyp

eptide chain. Which level of protein structure in affected molecules would be most directly affected by the drug?
A. Secondary structure.
B. Tertiary structure.
C. Primary structure.
D. Quaternary structure.
Biology
1 answer:
zysi [14]2 years ago
4 0

Answer:

B

Explanation:

Tertiary structure is the overall three-dimensional structure resulting from folding and covalent cross-linking of a protein or polynucleotide molecule. This is what is explained in this question.

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Escherichia coli, or E.coli, is a species of bacteria. Entamoeba histolytica, or E. histolytica, is a single-celled amoeba. What
irina [24]

Answer:

The correct answer will be option- A and D

Explanation:

<em>E.coli</em> is a bacteria which is pathogenic to humans and<em> E. histolytica</em> is an amoeba which is a parasite.  Both are different species but both are single-celled organism which to survive share feature among them.

The common characters shared by these two species are: they depend on the source of energy for their survival which they usually get from the hosts. Both the species reproduce to produce progenies like them which help them maintain continuity of the species of Earth.

Thus, options- A and D are the correct answer.

7 0
2 years ago
At the site of the rough endoplasmic reticulum, proteins that are destined for secretion are manufactured. Insulin is a protein-
Eva8 [605]

Answer:

The type of vesicular transport involved in the exporting of protein-based hormones, such as insulin, into the bloodstream is regulated exocytosis.

Explanation:

In general terms, exocytosis is a type of active transport that allows intracellular substances are released to the extracellular space, through of vesicles that fuse with the plasma membrane, which allow the exit of substances from inside the cell.

Regulated exocytosis is the specific vesicular transport for the secretion of substances, such as hormones. For this type of transport to exist, the presence of an extracellular signal is required, which will activate the fusion of the vesicles.

In the case of insulin, the external signal originates with the increase in blood glucose levels, a signal that penetrates the intracellular space and generates an increase in insulin production in the islets of Langerhans (pancreas).

Before insulin secretion occurs, the cell must be depolarized, allowing calcium to enter, which promotes transport by regulated exocytosis of insulin to the extracellular space.

Learn more:

brainly.com/question/1109181

4 0
2 years ago
Which best describes the bond that would form between lithium (Li) and fluorine (F)?
Vladimir79 [104]
They form an ionic bond by exchanging one electron
3 0
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Celine feels that the form of marketing their company is using​ isn't working anymore. Merle disagrees vehemently. Those in the
Olin [163]

Answer:

B. Traditional view

Explanation:

the traditional view is that nothing positive results from a conflict

4 0
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habitat is density-dependent
food is also density-dependent because its availability varies depending on this factor
a hurricane is abiotic and density-independent
number of mates is density-dependent and hunting by humans is density-independent
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2 years ago
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