Chapter 4

Question 1

nuclear envelope

Answer 1

continuous with ER, double phospholipid bilayer

Question 2

nuclear pores

Answer 2

guard entrance and exit

Question 3

nucleolus

Answer 3

makes ribosomes

Question 4

chromatin

Answer 4

DNA complex with proteins, neat, wrapped around histones

Question 5

ER

Answer 5

storehouse for calcium ions

Question 6

rough er

Answer 6

branches off envelope, folds for protein synthesis

Question 7

smooth er

Answer 7

no ribosomes, synthesizes lipids

Question 8

Golgi apparatus

Answer 8

phospholipid sacs compressed together

Question 9

cis face

Answer 9

closest

Question 10

trans face

Answer 10

faces plasma membrane, proteins will be processed and it will glycosylate (add proteins) and then package for exit

Question 11

lysosome

Answer 11

digestive, proteolytic- breaks down

Question 12

peroxisomes

Answer 12

eukaryotic, carry out oxidative reactions using molecular oxygen

Question 13

inner membrane of mitochondia

Answer 13

cristae folds for oxidized phosphorylation

Question 14

thylakoid membrane

Answer 14

disks made of granum that are on top of chlorophyll

Question 15

chromoplasts

Answer 15

color, petals

Question 16

leucoplasts

Answer 16

dark with iodine, starch storage

Question 17

vacuoles

Answer 17

plants, store water and sugar

Question 18

cytoskeleton

Answer 18

microfilaments- actin
intermediate filaments- keratin
microtubules- monomers a and b tubules, largest, directs traffic