Animal Cell Anatomy

Question 1

Plasma (Cell) Membrane

Answer 1

outer surface that regulates entrance and exit of molecules

Question 2

Cytoskeleton

Answer 2

maintains cell shape and assists movement of cell parts: microtubules, intermediate, actin filaments

Question 3

Microtubules

Answer 3

protein cylinders that move organelles

Question 4

Intermediate filaments

Answer 4

protein fibers that provide stability of shape

Question 5

Actin filaments

Answer 5

protein fibers that play a role in cell division and shape

Question 6

Centrioles

Answer 6

short cylinders of microtubules

Question 7

Centrosome

Answer 7

microtubule organizing center that contains a pair of centrioles

Question 8

Vesicle

Answer 8

small membrane bound sac that stores and transports substances

Question 9

Lysosome

Answer 9

vesicle that digests macromolecules

Question 10

Cytoplasm

Answer 10

semifluid matrix outside nucleus that contains organelles

Question 11

Nucleus

Answer 11

command center of all

Question 12

Nuclear envelope

Answer 12

double membrane with nuclear pores that enclose nucleus

Question 13

Chromatin

Answer 13

diffuse threads containing DNA and protein

Question 14

Nucleolus

Answer 14

region that produces subunits of ribosomes

Question 15

Endoplasmic reticulum (ER)

Answer 15

protein and lipid metabolism

Question 16

Rough ER

Answer 16

studded with ribosomes that synthesize proteins

Question 17

Smooth ER

Answer 17

lacks ribosomes, synthesizes lipid molecules

Question 18

Peroxisome

Answer 18

vesicle that is involved in fatty acid metabolism

Question 19

Ribosomes

Answer 19

particles that carry out protein synthesis

Question 20

Polyribosome

Answer 20

string of ribosomes simultaneously synthesizing same protein

Question 21

Mitochondrion

Answer 21

organelle that carries out cellular respiration producing ATP molecules

Question 22

Golgi Apparatus

Answer 22

processes, packages, and secretes modified proteins