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Delicious77 [7]
3 years ago
6

What is the best evidence for a three-domain system?

Biology
1 answer:
ch4aika [34]3 years ago
8 0

Answer:

The best evidence for the three domain system is

Sensitivity to Antibiotics

Explanation:

The three domains of life includes :

Archaea - oldest known domain, ancient forms of bacteria.

Bacteria - all other bacteria that are not included in the Archaea domain.

Eukarya - all the organisms that are eukaryotic or contain membrane-bound organelles and nuclei.

Types of evidences for the three domain system are:

1) differences in the sequences of nucleotides in the cell's robosomal RNAs (rRNA)

2) the cells's membrane lipid structure.

3) its sensitivity to antibiotics.

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The red blood cell count is kept stable despite productions of new cells by what?
saveliy_v [14]
The answer is programmed cell death
8 0
3 years ago
How does El Nino affect global weather?
sdas [7]

El Niño affects global weather because precipitation increases in South and Central America and also decreases in Africa, Asia, and Australia (Option C).

<h3>What is 'El Niño'?</h3>

The  'El Niño' is a climatic phenomenon associated with the formation of violent storms that cause flooded areas in America.

It has been suggested that 'El Niño' may be associated with global warming and increased its activity in the last years.

In conclusion, El Niño increases precipitation in South and Central America and decreases it in Africa, Asia, and Australia (Option C).

Learn more about El Niño here:

brainly.com/question/6869165

#SPJ1

7 0
2 years ago
After doing a genetic analysis on your respective _______, you and your roommate learned that you shared the same maternal ances
Norma-Jean [14]
MRNA is a short lived form of genetic information that is used in transcribing the genetic information, hence it is not very useful for analysis since it is fragile and wrong transcriptions happen quite often. SNPs (Single Nucleotide Polymorphisms) are a form of genetic mutation; they are more frequent than most other mutations since a single transription error may lead to this. While SNPs are important in genetic analysis and getting information about causes of disease, they are not very helpful in determining your maternal lineage. Similarly, while nuclear DNA contains a large portion of our genetic information, half of it is from our fathers and half from our mothers, so the analysis becomes hazy very soon. Mitochondrial DNA instead is directly passed down from mother to her offspring since the embryo contains only the mitochondria of the ovary. Thus, studying differences between mitochondrial DNA, one can gain information about his maternal lineage and go back to Mitochondrial Eve, the person from which all living persons have gotten their mitochondria from. Thus, the correct answer is c.
8 0
3 years ago
If an enzyme is added to a chemical reaction, it will do what?
Nana76 [90]
<h2>Answer:</h2>

Option C is correct.

C. lower the activation energy so the reaction rate will increase

<h2>Explanation:</h2>

Enzymes are protein molecules in cells which work as catalysts. Enzymes speed up chemical reactions in the body, but do not get used up in the process. Almost all biochemical reactions in living things need enzymes. With an enzyme, chemical reactions go much faster than they would without the enzyme.

4 0
3 years ago
Jenny is learning about the importance of the ozone layer. She was upset to know that there is a depletion of the ozone layer an
Marianna [84]

UV rays reacting with the O2 molecules

I might be wrong a little but

Hope the helps :)

8 0
3 years ago
Read 2 more answers
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