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sweet-ann [11.9K]
2 years ago
5

What functions must a membrane allow?

Biology
1 answer:
andreev551 [17]2 years ago
3 0

Answer:

They keep toxic substances out of the cell

Explanation:

They contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, and metabolic products, that mediate cellular and extracellular activities to pass between organelles

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Very long and large organic molecules called ?
Black_prince [1.1K]
Macromolecules, hope this helps.
4 0
2 years ago
A standard PCR cycle includes three steps: denaturation (95°C), annealing (55°C), and elongation (65°C).
xz_007 [3.2K]

Answer:

Denaturation process: The DNA template  

Annealing process: Primers  

Elongation process: dNTPs and Taq polymerase

Explanation:

For the denaturing process, the only ingredient that is required is the DNA template that will be separated from a double helix (or double strand) into a single strand, by increasing the temperature to 95 C, (at this temperature the hydrogen bonds that keep together the double stranded break). After the double strand is denatured, the following process is annealing. For this, the required ingredient are the primers; these primers will hybridize or anneal according to the nucleotide complementarity to the single strand of the DNA. Finally, for the Elongation process, you will require the Taq polymerase and the dNTPs. The enzyme will synthesize or “generate” a new strand of DNA based on the DNA template, using the provided dNTPs in the direction 5’ to 3’.

I hope this clarify you inquiry.  

6 0
2 years ago
True or false: the variable that is deliberately changed is called the responding variable.
Aliun [14]
The answer would be false.
4 0
2 years ago
Which way does earth rotate—from east to west, or west to east? Explain your answer.
77julia77 [94]

The earth rotates from West to East or if you want another way of saying it, counter-clockwise. It rotates from West to the East because the earth's Western Hemisphere (West) rotates to the Eastern Hemisphere, (East).

P.S. I hope this helps you!!

5 0
3 years ago
Read 2 more answers
Which of the following is the correct sequence of events in the origin of life? formation of protobionts (protocells) synthesis
Bess [88]
II, III, I, IV

Hope this helps!
8 0
3 years ago
Read 2 more answers
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