Biology

Question 1

1Facilitated diffusion differs from simple diffusion because it

Hard

A. moves against gradients B. uses carrier or channel proteins C. needs ATP D. only moves water

Question 2

2Which statement belongs to the cell theory?

Easy

A. cells never divide B. only animals have cells C. all living things are made of cells D. cells arise from non-living matter

Question 3

3A white blood cell engulfing a bacterium is an example of

Medium

A. exocytosis B. diffusion C. endocytosis (phagocytosis) D. osmosis

Question 4

4Active transport differs from diffusion because it

Easy

A. moves substances against a concentration gradient using energy (ATP) B. needs no energy C. only moves water D. only happens in dead cells

Question 5

5A red blood cell placed in distilled water will

Easy

A. stay the same B. divide C. shrink D. swell and burst

Question 6

6Root hair cells absorb mineral ions from dilute soil solution by

Hard

A. diffusion only B. active transport C. osmosis D. phagocytosis

Question 7

7Increasing the surface area to volume ratio of a cell

Hard

A. slows diffusion B. stops osmosis C. has no effect D. speeds up diffusion of materials

Question 8

8The cell membrane is described as

Easy

A. partially (selectively) permeable B. rigid C. fully permeable D. impermeable

Question 9

9The engulfing of solid particles by a cell is

Easy

A. osmosis B. pinocytosis C. phagocytosis D. exocytosis

Question 10

10The cell theory states that

Easy

A. cells arise from non-living matter B. viruses are cells C. all living things are made of cells D. only plants have cells