Which of the following pairs accurately connects a macromolecule to its monomer?
a. lipids – phosphate groups
b. nucleic acids – nucleotides
c. carbohydrates – amino acids
d. proteins – nitrogenous bases

How do cells grow and reproduce to maintain homeostasis?

Abnormal softening of a gland is known as

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important