Ch 3 Cells

Front 1

Which of the following statements about the cell theory is correct?

Back 1

E, Both a) and b) are correct- all living organisms are made up of one or more cells

All cells arise from other preexisting cells

Front 2

Which of the following statements about prokaryotic are incorrect?

Back 2

B) Prokaryotic have circular pieces of DNA within their nuclei

Front 3

Which of the following facts supports the claim that mitochondria developed from bacteria that long ago, were incorporated into eukaryotic cells by the process of phagocytosis?

Back 3

E) Mitochondria have their own DNA

Front 4

Hydrophobic molecules can pass freely through the plasma membrane, but ions and polar molecules are impeded by the hydrophobic core. For this reason, plasma membranes can be considered:

Back 4

A) Partially permeable

Front 5

Drugs called beta-blockers do all of the following except:

Back 5

D) Bind the cytoplasmic side of a receptor protein

Front 6

Cellular "fingerprints":

Back 6

D) Can help the immune system distingish "self" from "non-self"

Front 7

The movement of molecules across the membrane from an area of high concentration to one of low concentration is best described as

Back 7

C) Passive Transport

Front 8

The transport of water across a membrane from a solution of lower solute concentration to a solution of higher solute concentration is best described as:

Back 8

A) Osmosis

Front 9

In an experiment, you measure the concentration of a polar molecule inside and outside of a cell. You find that the concentration is high and gradually increasing inside the cell. What is you best hypothesis for the process you are observing?

Back 9

D) Active Transport

Front 10

Which of the following structures allow the passages of small molecules between animal cells

Back 10

D) gap junctions

Front 11

The largest structure in the eukaryotic cell is the ___ and it is surrounded by ____membrane(s).

Back 11

B) nucleus, two

Front 12

The cytoskeleton:

Back 12

D) helps to coordinate intracellular movement of organelles and molecules

Front 13

Which of the following statements about mitochondria is correct?

Back 13

C) most plant cells contain mitochondria

Front 14

Which of the following organelles is not present in animal cells?

Back 14

E) Chloroplast

Front 15

Given that the cell's structure reflects its function, what function would you predict for a cell with a large Golgi apparatus?

Back 15

B) Secretion of of digestive enzymes

Front 16

Cell walls:

Back 16

B) are not completely solid, having many small pores

Front 17

Which of the following organelles is not found in both plant and animal cells?

Back 17

E) central vacuole

Front 18

In plant cells, chloroplasts:

Back 18

E) both B) and D) are correct-

B- are the site of conversion of light energy into chemical energy

D-have their own linear strands of DNA