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ELEN [110]
3 years ago
10

Passive transport is the net movement of substances down a concentration gradient that requires metabolic energy. Active transpo

rt is the movement of substances up a concentration gradient that does not require energy.________
Biology
1 answer:
Dafna1 [17]3 years ago
4 0

Answer:

The statement is false.

Explanation:

Passive transport moves molecules from one side of the membrane to the other with the energy of the chemical gradient (or concentration gradient). Otherwise, active transport uses the hydrolyzation of ATP to gain energy in order to move molecules across the membrane without taking into account the gradient.

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how many dna molecules would there be after four rounds of pcr if the initial reaction mixture contained two molecules?
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  1. Answer: 32 molecules of DNA would be after four PCR if the initial reaction mixture contained two molecules
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Explanation:

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The highly sensitive PCR method enables quick DNA amplification of a particular section. Using visual methods based on size and charge, PCR may detect and identify gene sequences by producing billions of copies of a certain DNA fragment or gene.

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For any DNA synthesis reaction, there are only three easy stages that must be completed: First, the template is denaturated into single strands. Next, primers are annealed to each original strand to synthesise new DNA strands. Finally, the new DNA strands are extended from the primers.

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