Which of the following biological molecules is correctly paired with one of the functions it primarily serves in living cells?

Which best describes how enzymes function in the body?

Which statement describes the major role of lipids within a cell?

Most cellular activities are processes regulated (controlled) by the action of —

Proteins and nucleic acids both contain the element nitrogen, but only proteins contain which of the following elements?

Certain biomolecules contain information in their structure that can be used to determine the relatedness of two different species. Which set below is studied for this information?

A diagram of a protein molecule is shown. The units labeled “X” which bond together to form the protein molecule are called -

Enzymes are proteins that help increase the rate of chemical reactions inside cells. These proteins are composed of many simpler molecules called amino acids. Which of the following suggests that the shape of an enzyme determines the enzyme’s function?

Proteins and nucleic acids serve a wide variety of functions in the cell, and they are both made in a similar way by joining together a sequence of repeating subunits. For this reason, both of these organic molecules are referred to as -

Which best describes the role of enzymes in a chemical reaction?

Which of the following is the main reason that humans need to include carbohydrates in their diet?

Some bacteria contain a substance called nitrogenase. Nitrogenase catalyzes the chemical reaction that converts atmospheric nitrogen (N₂) into ammonia (NH₃). Nitrogenase is an example of which of the following?

In the diagram show above, the dipeptide is the -

In the diagram above, the substance labeled X is most likely -