chapter 3

Question 1

cytoplasm

Answer 1

inside cell.
structure: composed of water
fxn: in which stuff dissolves

Question 2

nucleous

Answer 2

structure: double membrane bound
organelle contains a cytoplasm like material called: nucleoplasm

DNA DISSOLVES HERE

Question 3

nucleous fxn

Answer 3

contains/protects DNA control call fxn
RIBSTONES MADE AT NUCLEOUS

Question 4

Occurs in 2 forms: roughER
and smoothER

Answer 4

roughER has rimbosomes
smothER does NOT have rimbosomes

Question 5

mitochondria

Answer 5

structure: double membrane bond organelle
fxn: “the powerhouse” of the cell (ATP)(atp means energy)

Question 6

cell membrane

Answer 6

The cell membrane is a flexible, sturdy barrier that delimits
the cell

Question 7

what are the primary component of
Cellular membranes

Answer 7

phospholipids

Question 8

Each phospholipid molecule has two regions

Answer 8

-HEADS are hydrophilic to interact with watery
environments inside and outside the cell
– TAILS are hydrophobic and form the interior of the
bilayer

Question 9

cell support
and shape ,organization
of chemical reactions, cell
& organelle MOVEMENT

Answer 9

Cytoskeleton

Question 10

membrane permeability

Answer 10

DIFFUSION: movement of molecules/compounds from high concentration to low concentration

FACILITATED DIFFUSION: movement of

Question 11

active transport

Answer 11

needs energy to travel up and down (usually ATP)

Question 12

simple diffusion

Answer 12

does not need energy to go high to low

Question 13

facilitated diffusion

Answer 13

need help from protein to go up and down

Question 14

the study of the entirety (or sum) of all the
genes within an organism

Answer 14

Genomics

Question 15

ribosomes

Answer 15

structure: rna + proteins
fxn: all proteins made by robosomes