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Gala2k [10]
3 years ago
9

Which of the following could be a nucleotide of DNA?

Biology
2 answers:
loris [4]3 years ago
7 0
A. deoxyribose + phosphate group + thymine 
s2008m [1.1K]3 years ago
4 0
DNA stands for deoxyribonucleic acid and then there is thymine, adenine, uracil and guanine, as well as cytosine. The correct answer is: Thymine Deoxyribose phosphate group
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Explain how mutations can alter a DNA strand and ultimately a protein structure. Make sure to include point mutation, frameshift
Aleksandr [31]

Answer:

By changing a gene's instructions for making a protein, a mutation can cause the protein to malfunction or to be missing entirely. When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition

Explanation:

8 0
2 years ago
DNA samples should be stored in an airtight containers to prevent contamination true or false
Aleksandr-060686 [28]

Answer: True

Explanation:

DNA is a biological evidence. It is a heredity material which is present in all organisms on earth. The DNA in humans can be taken as sample from nails, bones, blood, skin, hair and other sources.

The DNA samples can be taken so as to establish the identity of the culprit, victim or any one which is associated with crime.

The DNA evidence has applicability as a potent evidence in the court of law. Thus utmost care should be taken to preserve it's integrity until it is analysed and presented in the court of law.

Thus the DNA evidence should be collected and preserved in airtight containers so as to prevent the entry of airborne pathogens like bacteria, virus these can contaminate the sample evidence and can make the evidence not of any use.

 

7 0
3 years ago
Why is watershed pollution an important environmental issue?
Mkey [24]

I think the answer is C


8 0
3 years ago
Which is part of the endosymbiont theory? Autotrophic prokaryotes evolved into mitochondria. Eukaryotes engulfed photosynthesizi
MrRa [10]

Answer:

The correct answer is eukaryotes engulfed photosynthesizing prokaryotes

Explanation:

The endosymbiotic theory or symbiogenesis is an evolutionary theory that traces the origin of eukaryotic cells from prokaryotic organisms. It explains that some of the organelles (Mitochondria and Chloroplasts) in eukaryotic cells evolved from free-living prokaryotic microbes which were ingested or engulfed. The ingested prokaryotic cells survived within the organism and developed a symbiotic relationship.

According to the theory, chloroplasts was formed when eukaryotes engulfed photosynthesizing prokaryotes and mitochondria was formed when bacteria capable of aerobic respiration were engulfed.

6 0
3 years ago
Please pleaseee pleaseee can I get help I’ll mark the brainliest
DaniilM [7]

Answer:

A or B

Explanation:

hope this helps please tell me if I’m wrong

5 0
3 years ago
Read 2 more answers
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