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djyliett [7]
3 years ago
15

Transport of materials into a cell against a concentration gradient, from low to high, requires A) water. B) energy. C) osmosis.

D) a passageway.
Biology
2 answers:
N76 [4]3 years ago
5 0
The answer to this is B
sesenic [268]3 years ago
3 0

Answer:

b) energy

Explanation:

To survive, cells require many substances to be at higher concentrations inside the cell than outside of it. This is known as active transport and requires cell energy.

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Offspring need to carry just one dominant allele from their parents to inherit the polydactyl condition. The probability of the offspring having polydactyly is 50% (2 of the 4) and 50% not having it (normal). This can be expressed as a ratio, 2:2 which can be simplified to 1:1. - found on the internet

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