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ale4655 [162]
3 years ago
14

When were the two major extinction periods that amphibians have survived?

Biology
1 answer:
faltersainse [42]3 years ago
8 0

in the 1950s and in 2007

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quzilet Which of the following occurs when DNA is replicated? Group of answer choices One strand of the parent DNA is preserved;
Bad White [126]

Answer:

The two strands of the parent DNA are separated, and two daughter DNA strands are formed.

Explanation:

DNA replication is a complex process which replicates or produces new DNA molecule from the parent DNA molecule mediated by enzymes and ATP.

The mechanism of DNA replication is known as the semi-conservative mode in which one new strand of DNA is synthesized complementary to the one strand of DNA. To form a new DNA molecule both the strand of the DNA gets separated and then a new daughter strand is formed complementary to each parent strand.

Thus, the selected option is correct.

4 0
3 years ago
Which compound would most likely be found in all living organism
nikdorinn [45]

Answer:

oxygen

Explanation:

Living organisms often contain amounts of several elements, but the most abundant ones are oxygen, carbon, hydrogen, nitrogen, calcium and phosphorus. But Oxygen is the most abundant element contained within living organisms, composing about 65% of the human body.

5 0
3 years ago
If two 4-Newton forces act on an object in the same direction, what is the net force on the object?​
MatroZZZ [7]

Answer:

8 Newton net force

Explanation:

Have a nice day

7 0
2 years ago
Why would the cell theory change over time?
alexandr402 [8]

Answer:

The invention of the microscope led to the discovery of the cell by Hooke. While looking at cork, Hooke observed box-shaped structures, which he called “cells” as they reminded him of the cells, or rooms, in monasteries. This discovery led to the development of the classical cell theory.

Explanation:

hope this helped you sorry if it did not

7 0
2 years ago
DNA does all but which of the following?
siniylev [52]

Answer:

The correct answer will be option-is read by ribosomes during the process of translation.

Explanation:

The DNA is a nucleic acid made up of nucleotides which serves as a genetic material of the cell. It stores the information required by the cell in the form of codons made up of nitrogenous bases. The DNA after transcription forms a messenger molecule called mRNA which is read by the ribosomes to code for specific amino acid which binds to form the proteins, the building block of the body.  

Since the mRNA is read by the ribosomes during translation and not DNA directly, therefore, the selected option is the correct answer.

3 0
3 years ago
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