Cell Organelles

Question 1

nucleus

Answer 1

genetic control center of cell
directs protein synthesis
houses DNA

Question 2

nuclear pores

Answer 2

regulate molecular traffic through envelope

holds two membranes together like screw

Question 3

plasma membrane

Answer 3

contains cell contents
regulates exchange of materials
involved in intracellular comm.

Question 4

ribosomes

Answer 4

interpret the genetic code

synthesize polypeptides

Question 5

smooth Er

Answer 5

lipid synth.
detoxification
calcium storage
transports proteins

Question 6

rough ER

Answer 6

protein synthesis

manufacture cellular membrane

Question 7

Golgi apparatus

Answer 7

receives and modifies new polypeptides
synthesizes carbohydrates
packages cell products

Question 8

lysosomes

Answer 8

contain enzymes for intracellular digestion, programmed cell death and glucose mobilization

Question 9

peroxisomes

Answer 9

contain enzymes for detoxification: for drugs, alcohol and free radicals

Question 10

mitochondria

Answer 10

ATP synthesis

aerobic respiration

Question 11

cytoskeleton

Answer 11

structural support
splits chromosomes during cell division
organelle trafficking

Question 12

microtubules

Answer 12

hold organelles in place

maintain cell shape and rigidity

Question 13

microfilaments

Answer 13

involved in muscular contraction, osmosis, and cell division

support plasma membrane

Question 14

cilia

Answer 14

move substances along cell surface

sensory roles

Question 15

centrioles

Answer 15

form miotic spindle during cell division

unpaired centrioles form cilia and flagella

Question 16

interphase

Answer 16

cell spends most of time in this stage
cell obtains nutrients
metabolizes and grows
reads its DNA + o/ normal fun.

Question 17

prophase

Answer 17

chromatin condenses into chromosomes
nuclear envelope breaks down
centrioles sprout spindle fibers that push centrioles apart

Question 18

metaphase

Answer 18

cell’s chromosomes align themselves on metaphase plate

Question 19

anaphase

Answer 19

chromosomes break apart

sister chromatids move to opposite sides of cell

Question 20

telophase

Answer 20

two daughter nuclei form
chromosomes uncoil
nuclear membrane is formed

Question 21

flagella

Answer 21

sperm motility