Exam 3: Cellular Form and Function

cells are thick in the middle and tapered toward the end.

This figure shows the structure of a representative cell.What does "D" represent?

The Na+-K+ ATPase is a countertransport antiport carrier, which always requires energy.

The sodium-potassium (Na+-K+) pump transports both sodium and potassium their concentration gradients in a process called .

A patient was severely dehydrated, losing a large amount of fluid.The patient was given intravenous fluids of normal saline.Normal saline is to your blood cells and is about NaCl.

Microvilli and cilia differ in their function but have the same internal structure.

Which of these bring nonspecific material into a cell?

Muscle cells contain numerous to serve their high demand for ATP.

The nucleus is the largest organelle in most cells.

The greater the concentration gradient the faster the diffusion rate.

gives structural support, determines the shape of a cell, and directs the movement of substances through the cell.

One example of pinocytosis is the uptake of low-density lipoproteins (LDLs) by endothelial cells.

Among other functions, hepatocytes (liver cells) are specialized in detoxifying drugs or other chemicals.Hepatocytes have large amounts of

This figure shows the plasma membrane.What does "C" represent?

Although the transmission electron microscope (TEM) can magnify much more than a light microscope, even at identical magnifications the TEM has the advantage of

The sodium-glucose transport protein (SGLT) is one example of an active transport process involving a uniport carrier.

If a cell doubled in diameter, it would have twice as much cytoplasm to maintain.

White blood cells engulf bacteria by means of

Ribosomes are made of proteins and RNA.

Particles can leave a cell by any of these means except by