To control the concentration of lipids in our blood, our red blood cells (RBCs) have protein receptors on the surface of the cell that bind to lipids. Once a sufficient number of receptors are bound to lipids, they are pulled into the cell and the lipids are digested. This is an example of which type of cellular transportation?

Which of the following cytoskeletal elements consists of alpha- and beta-tubulin subunits?

A reaction is being inhibited by a product of the reaction. This product binds to the active site of the enzyme. Which of the following does this best describe?

The inner membrane of the mitochondrion is larger than the outer membrane to increase the surface area into which proteins involved in cellular respiration are embedded.

Which of the following cytoskeletal elements is responsible for moving flagella and cilia?

Which of the following best explains the function of the plasma membrane?

Useful constants Planck’s constant h = 6.626 × 10-34 J s Speed of light c = 2.998 × 108 m s-1 Rydberg constant R∞ = 1.097 × 107 m-1 Constant from Bohr model of atom k = 2.179 × 10-18 J

In photosynthesis, which of the following reactions is responsible for reducing CO2 into G3P?

Which statements are false? When a change in enthalpy (ΔH) for a reaction is positive the reaction is endothermic The change in internal energy (ΔU) is the sum of the heat transferred (q) and work (w) done during a process The change in enthalpy (ΔH) for a reaction is equal the the heat transferred (q) to the system during that reaction

Miotics cause the muscle of the iris to contract and constrict the pupil.