What is the function of proteins and carbohydrates that are embedded in a cell membrane? they direct the reproduction process for the cell. they act as storage molecules for water. they control what enters and leaves the cell. they provide nutrients that the cell needs.

Plzz hurry im being timed during times of vigorous physical activity, muscles require a constant supply of oxygen. how does the body respond to these needs? a. breathing rate and heart rate both decrease. b. breathing rate and heart rate both increase. c. heart rate decreases, but breathing rate remains stable. d. breathing rate increases, but heart rate remains stable.

The first amino acid of a new polypeptide chain is

How are proteins and nucleic acids related? they both provide energy. they both carry genetic information. the structure of proteins is determined by nucleic acids. the subunits of nucleic acids are also the subunits of proteins.