A. They supply cells with nitrogen.
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Answer:
B
Explanation:
Heterozygous genotypes are those that have one dominant allele and one recessive allele.
Dominant alleles are represented as capital letters, while recessive alleles are represented as lowercase letters. So, a heterozygote should have one capital letter and one lowercase letter.
Looking at the answer choices, only B fits this, so it's the answer.
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Answer:
u write n1663r and teachers give u an a automatically
27 proteins in the cell membrane that assists with facilitated diffusion are known as carrier proteins, or transport proteins, since they carry materials across the cell membrane.
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brainliest..?
Binary fission occurs in single-celled organisms only and mitosis is just one cell dividing into two (eukaroytic cells)
