Exam 3: Cell Structure and Function

Match the following terms with the descriptions below (not all letters will be used). -Contains Krebs cycle enzymes in its matrix

The energy derived from the transport of electrons along the electron transport chain on the inner mitochondrial membrane is used to

Ion channels are triggered to open or close by all of the following mechanisms except

GTP-binding proteins (G proteins) function to

Match the following terms with the descriptions below (not all letters will be used). -Mediate the movement of chromatids during mitosis

An increase in extracellular potassium ion from 4.0 to 6.0 mEq/L would

Ion channels cannot transport ions against an electrochemical gradient.

Approximately 90% of the cell membrane is composed of protein, and 10% is lipid.

Which of the following reactions would occur in the body spontaneously without energy input from direct (ATP) or secondary (gradient) energy sources?

The four nucleotide bases that form DNA are C, G, A, and T.

Each molecule of O₂ accepts four electrons from the mitochondrial electron transport chain to form two H₂O.

Carbon dioxide is produced from $\beta$ -oxidation of fats.

Binding of a ligand to a type of G-protein-linked receptor called G_s stimulates the production of

Glycolysis is the metabolic process of breaking down a glucose molecule to form

Phospholipids spontaneously form lipid bilayers because they are

Cell-to-cell communication through secretion of chemical signals into the extracellular fluid between them is called _____ signaling.

Glycolysis produces two ATP molecules per glucose molecule.

Enzymes function to

Match the following terms with the descriptions below (not all letters will be used). -Contains digestive enzymes of the hydrolytic sort

Diffusion and osmosis occur passively.