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VMariaS [17]
3 years ago
10

Which is a concern of scientists when genetically modifying plants

Biology
2 answers:
Yuri [45]3 years ago
5 0

But some scientists and members of the public have expressed concern that the genetic engineering of plants could result in unsafe foods, do irreparable harm to beneficial organisms, and spur the uncontrollable growth of weeds.
gladu [14]3 years ago
5 0
There are many reasons for concern. The GE crops are created by using a new genetic process to insert an unknown amount of DNA that has the potential to spread in the environment in unpredictable ways. Independent research on the effects of eating these new foods has been suppressed when it shows evidence that the GMOs are harmful to health. Hope this helped. ;)
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Differences in traits such as hair texture are determined by differences in ? A) The location of sugar groups in DNA B)the seque
netineya [11]

Answer:

A

Explanation:

This is called the locus and is determined in Meiosis by gametes from parent cells. During meiosis there is this thing called 'crossing over' where the gametes (sperm and egg cells) homologous genes (genes of similar size and shape, such as X and Y chromosomes or X and X) exchange genes on the same locus to provide slightly different characteristics.

Please check this with your teacher but i believe that this is right. Hope this helps. ;)

4 0
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 sharp, inch-long thorns of the crown-of-thorns sea star are its spines. These spines, unlike those of most other sea stars,
vitfil [10]

Answer:

The answer is A) derived from the nematocysts of its prey.

Explanation:

Sea stars mostly eat cnidarians (mollusks) which can contain a large number of nematocysts in their bodies. Therefore it would be possible that this toxin is absorbed from the prey.

5 0
3 years ago
A positive Benedict’s test indicates the presence of a
Ganezh [65]
The presence of glucose in urine symptom of dietaboietes <span />
7 0
3 years ago
The chemical equation below summarizes cellular respiration.
gogolik [260]
The answer is chemical energy
6 0
3 years ago
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