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Gnoma [55]
3 years ago
10

The enzyme that can proofread replicating dna, detect incorrect bases, excise them, and correctly replace them is question 5 opt

ions:
a.dna gyrase.
b.primase.
c.dna helicase.
d.dna polymerase.
e.dna ligase.
Biology
1 answer:
leva [86]3 years ago
5 0
Dna proofreading. DNA excision repair. The rezponsible enzyme (d)
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An enzyme in a cell became dysfunctional because of an alteration. As a result, the DNA strands would not separate to begin the
yanalaym [24]

Answer:

C. Helicases

Explanation:

Helicases to be termed as enzymes that is blind and contains acid i.e. remodel nucleic or have protein i.e. nucleic acid. It is important as the time of DNA replication as it divided the DNA i.e. double stranded into one single standard that permits each and every strand for copied it

Also it cracks the bonds i.e. hydrogen that lies between the two strands this could create a replication fork.

Therefore in the given case, the helicases is affected

3 0
2 years ago
25 points!
andrey2020 [161]

Answer: A Tree

Explanation:

7 0
3 years ago
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The first organisms that perform photosynthesis involves about two.2 billion years ago. During the next few million years their
balandron [24]

Answer:

<em>The correct option is A) an increase in oxygen levels, which led to the extinction of many anaerobic organisms.</em>

Explanation:

Photosynthesis can be described as a process in which food (glucose) is produced by photosynthetic organisms by using carbon dioxide, water along with light energy from the sun. Oxygen is released as a by-product of this reaction. The process of photosynthesis initially allowed for oxygen gas to get accumulated in the air. This caused the rise of aerobic organisms who required oxygen for respiration. Before the photosynthesis organisms evolved, there was not enough oxygen gas on earth to support the life of aerobic organisms.

6 0
2 years ago
If water we’re a nonpopular molecule how would it’s properties be different
guajiro [1.7K]

Answer:

water would not form hydrogen bonds between H20 molecules

4 0
2 years ago
Rocky Mountain juniper (Juniperus scopulorum) and one-seeded juniper (J. monosperma) have overlapping ranges. Pollen grains (whi
jarptica [38.1K]

Answer:

The correct answer is: Yes, this is an example of Reproductive Isolation.

Explanation:

  • Reproductive Isolation can be defined as the mechanism adopted by different species during the course of their evolution, due to which the individuals belonging to different species are incapable of mating with each other and producing viable offspring.
  • The given question is an example of Mechanical, Pre-zygotic Reproductive Isolation.
  • Prezygotic Isolation refers to the mechanism adopted by individuals of different species during the course of evolution such that successful fertilisation of gametes from individuals of different species never occur, hence a viable zygote is never formed.
  • Mechanical Isolation refers to the mechanism adopted by individuals of  different species during the course of evolution such that their reproductive organs or the organs that assist in the process of reproduction are incompatible to each other. Hence, the gametes of each species are unable to come in vicinity of each other.
  • Here, the pollen grain from the flower of one species of juniper is unable to form the pollen tube when its sits on the stigma of the flower of another species of juniper. This is an example of Mechanical Isolation.
8 0
3 years ago
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