This is a chemical bond that forms between the carboxyl group of one amino acid and the amino group of the adjacent amino acid during protein synthesis.

What links the two strands in a dna helix together in the middle? a. phosphate groups b. sugar rings bonded together c. proteins d. bases with hydrogen bonds

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.