Which one of these is not an example using facilitated diffusion?
aquaporins facilitate the diffusion of water in the kidney tubules of many
mammals.
a carrier protein moves sucrose across the membrane with the
concentration gradient.
using the sodium-potassium pump involves the hydrolysis of atp and the
release of nat to the outside of the cell.
ca+2 moves from high cytoplasmic concentration to low concentration
inside the cell using a membrane-spanning protein.

1. which statement is true regarding monocytes? a. they digest pathogens. b. they produce antibodies against cancerous cells. c. they have a granular appearance under a microscope. d. they produce antibodies against microorganisms.

Before the can be observed by using a transmission electron microscope, cells are sliced into very thin sections. what disadvantage does this procedure present in the study of cellular parts

Acar company is testing seatbelts using crash test dummies. the company finds that when cars come to a sudden stop, the crash test dummies' bodies continue to move forward. the seat belt keeps the crash test dummies from hitting the back of the seat in front of them. why do the crash test dummies' bodies continue to move forward even though the car stopped? a. the friction opposing their bodies' movement keeps them in motion. b. the inertia of their bodies keeps them in motion. c. the forward acceleration of the car keeps them in motion. d. the gravity pulling on the car keeps them in motion.