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3 years ago

1. Which is a liquid fossil fuel? A petroleum B coal c peat D shale

Biology

2 answers:

bazaltina [42]3 years ago

5 0

The answer is A beacause the others are not liquid

Nastasia [14]3 years ago

3 0

Answer:

Explanation:

A.petroleum

is the answer

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It is a catecholamine. It is also known as adrenaline. It will increase the heart rate and other flight or fight responses.

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3 years ago

Which variable should be changed in an experiment to test the best conditions for bacteria to grow? the type of bacteria used th

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An experiment to test the best conditions for bacteria to grow is the material that the bacteria feed upon. Option D.

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1 year ago

Which was Charles Darwin’s contribution to the study of biology?

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Answer:

Darwin's greatest contribution to science is that he completed the Copernican Revolution by drawing out for biology the notion of nature as a system of matter in motion governed by natural laws. With Darwin's discovery of natural selection, the origin and adaptations of organisms were brought into the realm of science.

Explanation:

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2 years ago

The crispr system involves the cas9 enzyme, which identifies specific nucleotides to be cut using a(n) ________ molecule as a gu

bonufazy [111]

Answer:

RNA

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CRISPR system was discovered by a Japanese scientist. Naturally bacteria and many other prokaryotes have CRISPR system in their genome which they use as a self defense against a pathogen which is invading them. It consists of inter spaced, short palindromic nucleotide repeats which encode a guide RNA (gRNA). This guide RNA (gRNA) recognizes the target sequence on the pathogen. The gRNA is followed by Cas9 enzyme which along with the gRNA plays a very important role in breaking genome of the pathogen. Once the target gene is cut down the rest of the DNA can be rejoined by non homologous end joining.

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3 years ago

Read 2 more answers

In dna replication which strand grows continuosly toward the

Kay [80]

Replication Fork! Is the answer! Hope this helps!

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3 years ago