20 Q?’s

Question 1

cytoplasm

Answer 1

contains the cytosol, inclusions, and organelles

Question 2

plasma membrane

Answer 2

forms the outer barrier of the cell

Question 3

nucleus

Answer 3

the cell’s control center

Question 4

what is not a component of the cytoplasm?

Answer 4

chromatin

Question 5

simple diffusion is defined as the movement of..

Answer 5

molecules from areas of higher concentration to areas of low concentration

Question 6

the rate of diffusion is affected by which of the following..

Answer 6

temperature, size of the molecules, & steepness of the concentration gradient

Question 7

facilitated diffusion is used to transport..

Answer 7

sugars and amino acids

Question 8

a red blood cell placed in a hypertonic medium will..

Answer 8

shrink

Question 9

active transport moves a solute..

Answer 9

up its concentration gradient, that is, from a low concentration to a high one

Question 10

active transport

Answer 10

requires energy in the form of ATP

Question 11

the sodium-potassium exchange pump is an example of..

Answer 11

active transport

Question 12

exocytosis is a process by which cells..

Answer 12

release substances from the cell through pores in the cell membrane

Question 13

certain white blood cells engulf microorganisms and bring them in to digest them. this process is best described as..

Answer 13

phagocytosis

Question 14

microscopic membrane extensions that extend from the plasma membrane are called..

Answer 14

microvilli

Question 15

in a cell that is not dividing, the unwound, filamented mass of DNA & associated proteins is (are) called…

Answer 15

chromatin

Question 16

__ proteins whereas other proteins that are attached to either the inner or the outer surface of the lipid bilayer are called __ proteins

Answer 16

integral; peripheral

Question 17

the uptake of material through the plasma membrane by the formation of a vesicle is __ , whereas the fusion of a vesicle with the plasma membrane and the release if its contents outside the cell is called..

Answer 17

endocytosis; exocytosis

Question 18

the organillero responsible for protein synthesis are known as __ & the organelles that assist with the breakdown of proteins are called __

Answer 18

ribosomes; proteasomes

Question 19

which organelle gives..

instructions for protein synthesis & cell reproduction; contains genetic information

Answer 19

nucleus

Question 20

which organelle…
has an intracellular compartment that forms transport vesicles; participates in lipid synthesis and synthesis of membrane or secreted proteins

Answer 20

endoplasmic reticulum

Question 21

which organelle..

packages proteins for export from cell; forms secretory vesicles

Answer 21

Golgi apparatus

Question 22

which organelle..

digests worn-out organelles & cell debris; digest material taken up by endocytosis

Answer 22

lysosomes

Question 23

which organelle..

is the “power plants” of the cell

Answer 23

mitochondria

Question 24

which organelle..

is used in break down of fats & contains the enzyme catalase

Answer 24

peroxisome

Question 25

temporary storage sites in the cytosol for substances such as pigments or nutrients are called __

Answer 25

inclusions

Question 26

what is the general function performed by all human body cells?

Answer 26

gives rise to all different types of cells