Exam Four

Question 1

cell membrane

Answer 1

selective barrier around cell

Question 2

cytoplasm

Answer 2

interior region

Question 3

cytosol

Answer 3

jelly like substance inside cell- suspends subcellular items

Question 4

chromosomes

Answer 4

carry genes as DNA

located inside nucleus

Question 5

ribosomes

Answer 5

complexes that synthesize proteins based on the instructions provided in genes

complexes of rRNA and proteins

Question 6

cell wall

Answer 6

maintains shape and protects cell

plant cells only

Question 7

Plasmodesmata

Answer 7

channels through cell walls that connect cytoplasms of other cells

Question 8

nuclear membrane

Answer 8

separates nucleus from cytoplasm

Question 9

nucleolus

Answer 9

contains ribosomal RNA and ribosomal proteins

site of rRNA synthesis

Question 10

endoplasmic reticulum

Answer 10

network of membranes

Rough
-makes secretory proteins
-adds proteins and phospholipids to itself
-forms transport vesicles from transitional ER

Smooth
- synthesize lipids
-metabolism of carbs
-stories calcium ions
-detoxifies drugs and poison

Question 11

golgi apparatus

Answer 11

modify, store, and route products of ER elsewhere

Question 12

lysosome

Answer 12

breaks down things
“digestive system”

animal cells only

Question 13

Vacuoles

Answer 13

maintains turgor in plant cells

keeps “water” level maintained, not too much/little

Question 14

mitochondria

Answer 14

sites of cellular respiration

Question 15

chloroplast

Answer 15

serve as the site of photosynthesis

plants and algae only

Question 16

peroxisome

Answer 16

contains enzymes that transfer hydrogen, creating hydrogen peroxide, then degraded

Question 17

Centrosome, centrioles, microtubules

Answer 17

structure that serves as microtubule organization center, two centrioles

cylinder of microtubule triplets in animal cell

microtubule hollow tubes of tubulin dimers