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AleksAgata [21]
3 years ago
14

BRAINLIEST IF CORRECT 45 POINTS REPORTED IF WRONG OR TROLL

Biology
2 answers:
Bond [772]3 years ago
4 0

Explanation:

The Cambrian Explosion happened on Earth around 541 million years ago. As many major groups of animals started to appear after this event, high levels of oxygen would have been necessary in the atmosphere in order to sustain the lives of these animals until modern-day times. (A)

fenix001 [56]3 years ago
3 0

Answer:

the answer is

Explanation:

A. becuase  I gogled it

hope it helps!!!

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Which of the following might be symptoms of a lesion to the right motor cortex?
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Answer:

loss of movement of the left leg

Explanation:

The main function of the brain motor cortex is the regulation of body movements. This area of brain controls the voluntary movements of the body.

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Thus, the correct answer is option (A).

8 0
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Why would DNA need to replicate ? Two reasons
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Answer:

For make more copies.

divide to produce new cells

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Primary targets for insulin action include all of the following except
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When glucose is high, camp is _____ : cap _____ bind the lac operator, and rna polymerase _____ bind the lac promoter. high; doe
mote1985 [20]
When glucose is high, cAMP is low; CAP does not bind the lac operator, and RNA polymerase does not bind the lac promoter. CAP is only active when glucose levels are low, which means the cAMP levels are high, and therefore the lac operon can only be transcribed at high rate when glucose is absent.  The importance of this is that the bacteria only turns on the lac operon and start using lactose only after they have used up all the preferred energy source which is glucose. 
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Read 2 more answers
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