Carbon is a vital part of the phospholipids that make up cell membranes and the carbohydrates that makeup cell walls. Which of the following allows carbon to bond with up to four other atoms at a time and form the macromolecules that are essential to life? A. the six protons in its nucleus B. the six neutrons in its nucleus C. the two electrons in its inner shell D. the four electrons in its outer shell

D.

Explanation:

I have the same question, I think D though. Good luck with the rest of the assignment.

bc blah

explanation:

bc blah

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.