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BaLLatris [955]
3 years ago
12

True or false based on the context in paragraph 3 a thin soft pliable sheet or layer

Biology
1 answer:
boyakko [2]3 years ago
7 0

Answer:

Explanation:no para3 here

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Many of the cells of the root meristem are not undergoing mitosis, rather they are in a stag called ____________. Based upon the
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Interphase and longer
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3 years ago
Describe the substrate specificity of chymotrypsin and the structural feature that determines this specificity.
serg [7]

Answer:

The main substrate of chymotrypsin includes tryptophan, tyrosine, phenylalanine and methionine

Explanation:

1.

Histidine yields a proton to aspartate and recovers it from serine.

Seen in another way: aspartate captures a proton from the serine through histidine.

2.

a) The serine (deprotonated) is thus capable of attacking the peptide bond (nucleophilic carbonyl attack) and forms a tetrahedral intermediate; The substrate is thus covalently bound to the enzyme (now it is a transition state).

b) The peptide bond is broken and the released amino terminus (R) recovers a proton from histidine.

c) Histidine, in turn, recovers it from aspartic.

3.

a) Aspartate captures a proton of histidine again, so that it can capture it in turn from water.

b) This generates a hydroxide anion that attacks the ester intermediate between the serine and the carboxyl part (R ′) of the substrate peptide.

c) A new tetrahedral intermediate bound to the enzyme is formed (via serine residue).

4.

a) The carboxyl group of the peptide is regenerated, the serine being separated and the other peptide fragment being free (the R ′ part with a free carboxyl end)

b) The serine recovers the proton at the expense of histidine, which in turn captures it from aspartic acid.

c) The catalytic triad (Asp, His, Ser) has been regenerated in its original state.

The net reaction is:

R–NH – CO –R ′ + H2O ⟶ R– NH2 + HOOC –R ′ ⟶ R – NH3 + + −OOC –R ′

The active site or catalytic center of chymotrypsin is formed by several amino acid residues, among which the essential role corresponds to the "catalytic triad".

5 0
3 years ago
The carbohydrates seen here contain three common elements. What are they?
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The 3 common elements seen in a majority of carbohydrates or sugars are Carbon, Hydrogen and Oxygen.
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3 years ago
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Oxygen and carbon dioxide pass through the plasma membrane by _____. passive diffusion facilitated diffusion active transport
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It is passive diffusion
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3 years ago
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Knowing the type of food consumed by an organism helps to identify the role of the organism in the community. This role is known
Zigmanuir [339]

Answer:

Niche

Explanation:

Niche refers to adaptive features of an organism, its activity pattern and consumption of resources in the system.

Niche of an organism refers to its habitat, activity role and functional position within system. It includes the resources such as food that it obtains from the habitat for its survival.

6 0
2 years ago
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