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vovangra [49]
3 years ago
6

Which of the following is marked by the appearance of organisms with hard parts?

Biology
1 answer:
My name is Ann [436]3 years ago
8 0

Answer:

a

Explanation:

bace i have done thos test

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In the graph of an enzymatic reaction explain why the line begins as a straight line.
lianna [129]
Generally, the graph line will begin as a straight line when the substrate concentration is low. At very low substrate concentrations, the rate is proportional to the substrate concentration. As substrate concentration increases, it affects the enzymatic reaction, so the rate will change and the line will change.
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Exceptions to the Central Dogma of Molecular Biology”
Kruka [31]

Answer:

retroviruses

Explanation:

Retrovirus have an enzyme known as reverse transcriptase which allows them to synthesize DNA from RNA going against the central dogma of life which is the synthesis of RNA from DNA. This phenomenon is called teminism.

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4 years ago
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Describe an environmental factor that could influence natural selection and increase genetic diversity.
Valentin [98]
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3 0
3 years ago
A DNA fragment with the sticky end sequence TGGCA will bind with another DNA fragment with the sticky end sequence _____
klio [65]

Answer:

A DNA fragment with sticky end sequence TGGCA will bind with another DNA fragment with sticky end sequence ACCGT.

Explanation:

When a DNA strand is separated by the restriction endonuclease, it forms two separate single strands. These strands or cuts are known as sticky ends as they are detached from the complementary pairs.

These cuts of DNA are without complementary pairs and when they find suitable base pair, they get attached to it. These sticky ends are allowed to fix with the complementary base pairs during PCR/ polymerase chain reaction.

They are called sticky ends as they are ready to stick with the complementary base pairs of nucleotides.

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d1i1m1o1n [39]

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