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kicyunya [14]
3 years ago
13

Its believed that mitochondria evolved from

Biology
1 answer:
DaniilM [7]3 years ago
7 0

Answer:

Mitochondria are thought to have evolved from free-living bacteria that developed into a symbiotic relationship with a prokaryotic cell, providing it energy in return for a safe place to live.

Explanation:

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What is the key difference among the 20 amino acids that are used to make proteins?
Ray Of Light [21]

Answer:

Attached R side groups

Explanation:

The proteins are one of the important biomolecules which are directly coded by the genetic material of an organism.

The proteins are composed of the amino acids which possess, an amine group, a carboxylic group and an attached side group called the R group.

It is the R group of an amino acid which determines whether the amino acid will a polar or a non-polar amino acid molecule thus it determines the properties of the amino acid in terms of chemical properties. The R side group are involved in the formation of bonds with the substrate of the environment and the tertiary structure of the proteins.

Thus, the presence of different R group is the key difference in 20 amino acids.

4 0
3 years ago
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During anaphase II in Meiosis, what major event takes place Question 26 options: Sister chromatids are pulled apart. Chromosome
baherus [9]

Answer:

The correct answer is A.) Sister chromatids are pulled apart.

Explanation:

This is because during Anaphase II in Meiosis, the sister chromatids are pulled apart.

Chromosome pairs line up during Prophase I. <em>Not B.</em> When the chromosome pairs pair up this is also Metaphase I. <em>Not C.</em> When chromosome pairs are pulled apart, Anaphase I is occurring.

Hope this helps,

♥<em>A.W.E.</em><u><em>S.W.A.N.</em></u>♥

8 0
3 years ago
Vegetative reproduction, budding, and fragmentation are examples of
lys-0071 [83]

Answer:I'm pretty sure the answer is a or c for asexual reproduction.

Explanation:Because these are all types of asexual reproduction.

May be eukaryotic. I hope this helps!

5 0
3 years ago
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The Food and Drug Administration (FDA) works to promote and protect public health in the United States and is an example of whic
Marysya12 [62]

Answer:

The FDA regulates the use of medicines, vaccines and food supplies in the United States thus contributing to the public health of the country. This organization is classified as a federal consumer protection agency. The FDA gives tools through its means and scientific knowledge to users to make decisions.

6 0
3 years ago
Compare and contrast the two cycles of matter
sertanlavr [38]

Answer:

The two cycles of the matter are the carbon and nitrogen cycle. Both of them are biogeochemical cycles, it means that the chemicals spend a portion of the cycle in living things and non-living things. They are also common in that they both recycle nutrients that are essential to all organisms. 

They are different in the manner that they cycle. Nitrogen is huge, 78% of the air around us is nitrogen. It cannot be used by plants or animals. Once the nitrogen is used by the plant and make its way to the animal, it can be released to decomposition. 

Carbon has no requirement in processing by bacteria prior to plants and animals being able to use. Plants take carbon dioxide and make it sugar, animals eat the sugar. Some of it is released carbon dioxide that we exhale.

8 0
3 years ago
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