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madam [21]
3 years ago
13

Which of the following types of DNA damage cannot be repaired by base excision repair?

Biology
1 answer:
Elodia [21]3 years ago
7 0

Answer:

c. Thymine dimer

Explanation:

Thymine dimer

Thymine dimer ( also called the DNA damage ) that is repaired by the nucleotide excision repair which involves the breakage of the phosphodiester bond on the side of the damage , and results in the excision of an oligolnueotide of 10-12 nucleotides in length .

But the base excision repair involves the removal of the damaged base , removal of short polynuceotide and resynthesis of this area with DNA polymerase .

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6 0
3 years ago
Analysis of the second swab has confirmed that the causative organism is Streptococcus pyogenes, a gram-positive organism. Imagi
Ierofanga [76]

Answer:

Purple, spherical-shaped organisms arranged in chain like formations.

Explanation:

Bacteria are the microscopic organisms and included in the prokaryotes as they do not have nucleus. Two main types of bacteria are gram positive bacteria and gram negative bacteria.

The gram positive bacteria has thick cell wall peptidoglycan cell layer and can uptake the crystal voilet stain. These bacteria seems purple under the microscope due to the uptake of stain. The bacteria Streptococcus pyogenes are spherical in shape and occurs in the cluster of chain.

Thus, the correct answer is option (d).

7 0
3 years ago
Read 2 more answers
Help me please i need to know
m_a_m_a [10]

First thing to remember is that interphase is a stage associated with replication of DNA, and growth.


Once meiosis starts, the purpose is to produce a haploid gamete. So there is no further need of replication or growth.

4 0
3 years ago
Treat infested mango fruit of fungi
Flauer [41]

Answer:

Treating a sick mango for fungal diseases involves using a fungicide. All susceptible parts of the tree should be thoroughly coated with the fungicide before infection occurs. If applied when the tree is already infected, the fungicide will have no effect. Fungicide sprays need to be reapplied on new growth.

Explanation:

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6 0
3 years ago
Why does an eclipse happen? The Sun burns out quickly and reignites due to changes in magnetic energy. b A celestial object move
Softa [21]

An eclipse occurs when celestial object moves into the shadow made by another celestial object. Option A

<h3>What is an eclipse?</h3>

The term eclipse refers to a situation in which in which one celestial body casts a shadow on another celestial body. In this case, we could have the earth cast its shadow on the earth or the sun as the case may be.

The kinds of eclipse that could occur are;

  • Eclipse of the sun
  • Eclipse of the moon

This brings us to conclude that; an eclipse occurs when celestial object moves into the shadow made by another celestial object. Option A

Learn more about eclipse:brainly.com/question/4279342

#SPJ1

7 0
2 years ago
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