The diagram below shows four shapes for cells of equal volume. Which of the cells would be capable of the greatest exchange of material across a cell membrane per minute? Select one: a. Y b. Z c. W d. X O Cell W O Cell X Cell Y Cell Z

Consider the following diagram of the cell membrane. Which of the statements is NOT true regarding the cell membrane?   Group of answer choices a. Proteins and carbohydrates are also components of the cell membrane. b. Certain phospholipids and proteins on the outer surface of the cell membrane are attached to carbohydrates. c. Some carbohydrates extend through the entire lipid bilayer and appear on both surfaces of the membrane d. Some of the proteins embedded in the cell membrane constitute channels (passage canals).

Count the number of living cells in this counting square: Select one: a. 21 b. 23 с. 18 d. 20

Why is the surface area of a cell so important in determining maximum cell size? a. a very large cell needs very little surface area relative to its volume b. a very small cell can't exchange material across its surface c. a very large cell would need to exchange a very large amount of material with the external environment  d. a typical cell has more surface area than volume e. all of the above

The larger a cell, the longer the time it takes for molecules to diffuse to the center.     True   False

Which of the following best describes an Isotonic solution? A. The cellular plasma membrane will expand when the cell is place into an isotonic solution. B. The cellular plasma membrance will shrink when the cell is placed into an isotonic solution. C. Solute concentrations in the solutions are equal acorss the cellular plasma membrane. D. Solvent concentrations cause unequal solution concentrations across the plasma membrane.

if a cell has a net positive charge inside and there is a net negative charge outside the cell, which of the following is correct (if the membrane is permeable to each substance and the concentration of each is the same inside and outside the cell)? a. negative ions will move into the cell b. positive ions will move into the cell c. neutral ions will move into the cell d. negative ions will move our of the cell

When a cell is surronded by hyptonic solution, which of the following will occur? A. The cell will swell up, as water goes into the cell. B. The cell will shrivel, as water leaves the cell. C. The cell will remain the same size.

Cells in a hypertonic solution tend to: a. shrink due to water loss b. swell due to water gain c. stay the same size due to water moving into and out of the cell at the same rate d. none of the above