Ch1. What is a cell

Question 1

What are the tree parts of cell theory

Answer 1

1. All living things are composed of one or more cells
2. Cells are the basic units of structure and function
3. Cells come only from existing cells

Question 2

Nucleus does what

Answer 2

Contains DNA which directs the activity of the cell

Question 3

Structure of cell membrane

Answer 3

Phospholipid bilayer with proteins that function as channels, markers, and receptors

Question 4

Function of cell membrane

Answer 4

Selectively permeable boundary between cell and the environment

Question 5

What happens in the cytoplasm

Answer 5

provides locations for reactions

Question 6

Cytoskeleton function (2)

Answer 6

support system for organelles

maintains shape

Question 7

Ribosome function. structure - what are they made of

Answer 7

protein synthesis - no phospholipid bilayer - made of rRNA and protein

Question 8

Golgi complex 3 sides how they are oriented what they do

Answer 8

sorting shipping of proteins
cis side - faces RER receives proteins
medial - tags proteins w/ carbs lipids phosphates
Trans - faces plasma membrane sorts and ships

Question 9

Mitochondria structure what does it do. what drives what it does

Answer 9

two membranes
converts food to usable energy for work
oxidative phosphorylation - flow of H+ back into the mitochondrial membrane

Question 10

Lysosome function

Answer 10

digest and break down - especially old organelles

Question 11

peroxisome function (3 things made) and another function

Answer 11

1. bile
2. cholesterol
3. myelin

can also break stuff down

Question 12

Cytoplasm is term given to _____ +_______

Answer 12

cytosol + organelles