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3 years ago

Which of the following provides the most conclusive evidence that organisms of two different species share a common ancestor?

2 answers:

5 0

The answer is A. They have similar DNA sequences, That is the only way to determine if they share a common ancestor. It´s all in the blood.

Dovator [93]3 years ago

3 0

Answer:

The answer is a)They have similar DNA sequences

Explanation:

All similarities reflect the existence of a common evolutionary ancestor. All living beings carry the following: They have the same DNA; The same or very similar DNA; the same gene expression; The same amino acids. These shared peculiarities suggest that living beings descended from a common ancestor. All living organisms carry these characteristics because they were inherited from that ancestor

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Many cells make and use an enzyme, called catalase, to facilitate the decomposition of hydrogen peroxide (H2O2). The products of

Len [333]

Answer:

A. It decreases the activation energy needed to start the reaction

Explanation:

Organic catalyst which speed up the rate of organic chemical reaction is living cells are called enzymes.They have specific reaction site called active sites.This must be in prefect shape with the substrate for the organic chemical reaction to take place

When this occurs the minimum amount of energy of reaction to activate or stimulate the the atoms and molecules of the substrate to undergo chemical reaction is lowered.This energy of reaction is celled activation energy.

Catalase thought its active sites lowers the activation energy so that the molecules of H2O2 could break down to C02 and H2 faster,thereby reducing the time for theses product to form.The is the general roles of enzyme.To increase the rate of chemical reaction,by reducing the activation energy.

8 0

3 years ago

Get 20 points if you help on this question test

bija089 [108]

Answer:

I think it is both 1 and 2

Explanation:

6 0

4 years ago

All known organisms use genetic information to produce protein molecules via the same genetic code. This finding strongly suppor

jeyben [28]

Question:All known organisms use genetic information to produce protein molecules via the same genetic code. This finding strongly supports the hypothesis that __________.

a) the earliest macromolecules probably arose when lightning struck an oxygen-free atmosphere

b) all organisms are descended from one or a few common ancestors

c) the genetic code readily evolves by natural selection

d) there's only one possible way to encode information in a macromolecule

Answer:

b) all organisms are descended from one or a few common ancestors

Explanation:

Protein synthesis occurs when the nucleotide sequence of the mRNA is read in the form of genetic codes. A specific genetic code specifies the same amino acid in all living beings. For example, the code "UUU" codes for phenylalanine in all the living beings irrespective of their species. This suggests that all the life forms have originated from one or few common ancestors and the genetic code has been preserved during the course of evolution of various species.

4 0

3 years ago

Describe how natural processes can cause some of the water in the ocean to someday fall as rain or snow on the mountains

Kamila [148]

The water from the ocean gets evaporated by the sun and travels as a gas into the clouds. As more and more water builds up in the clouds it will eventually rain or snow

3 0

3 years ago

What is it called when a trait helps a animal survive

katovenus [111]

I believe that it's called an adaptation.

Hope I helped you

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3 years ago

Read 2 more answers