Which of the following structures is found in the nucleus?

Phospholipids are important components of the plasma membrane. What does “B” represent on the diagram?

Phospholipids are important components of the plasma membrane. What does “C” represent on the diagram?

Osmosis is the diffusion of ________ across a selectively permeable membrane.

Heat energy is

This is a sagittal section through the abdominopelvic cavity. What cavity does “D” represent?

Which of the following is a component of a nucleotide?

Covalent bonds form when

Which of the following is a synthesis reaction?

Hydrogen bonds form between molecules containing ________ bonds; the hydrogen bond is between a hydrogen atom of one molecule and a partially ________ charged atom of another.