Cell structure and function

Question 1

What does selectively permeability mean

Answer 1

A barrier that allows small molecules to pass through while blocking large molecules

Question 2

What is the structure of a phospholipid

Answer 2

Head (hydrophilic) tail (hydrophobic)

Question 3

What kind of molecules can pass through the phospholipid bi-layer easier?

Answer 3

Small non polar molecules

Question 4

Define Endocytosis in transport?

Answer 4

Folds into pouch surrounding particles on the outside of the cell

Question 5

Define exocytosis transport?

Answer 5

Particles transport out of the cell vesicle

Question 6

How do you measure icrt?

Answer 6

I = 1
C= M
R = .0831
T = 273 + temperature given

Question 7

What should every graph have?

Answer 7

1. Evenly spaced scale
2. X and y axis
3. Title

Question 8

Hypertonic

Answer 8

When a solution has more stuff dissolved in it
- exit the cell

Question 9

Hypotonic

Answer 9

When a solution has less stuff in it
-into the cell

Question 10

Isotonic

Answer 10

When two solutions have the same concentration
-stays the same

Question 11

Diffusion

Answer 11

Natural movement from a place to an area with a lot of them to an area with only a few of them

Question 12

Amphipathic

Answer 12

Something that has both hydrophobic and hydrophilic parts

Question 13

Active transport

Answer 13

Using energy (ATP) to move particles from an area of low to high concentration

Question 14

Apoptosis

Answer 14

Natural process which cells self destruct or die in a controlled way

Question 15

Osmosis

Answer 15

The movement of water with stuff from an area of low to high concentration to balance things out

Question 16

Phospholipid bilayer

Answer 16

A Double layer of molecules that make up the cell membrane

Question 17

Nucleus function

Answer 17

-Control the center of the cell

Question 18

Ribosome function

Answer 18

-Protein synthesis

Question 19

Endoplasmic reticulum function

Answer 19

-network of membranes and sacs

Question 20

Golgi apparatus function

Answer 20

Synthesis and packaging of materials for transport in the vesicles

Question 21

Lysosomes function

Answer 21

Intracellular digestion, recycles cells and materials, programmed cell death

Question 22

Vacuoles function

Answer 22

Storage of materials (food, water, minerals, pigments, poisons)

Question 23

Mitochondria function

Answer 23

Site of cellular respiration

Question 24

Chloroplasts function

Answer 24

Site of photosynthesis

Question 25

Peroxisomes function

Answer 25

Break down fatty acids, detox alcohol

Question 26

Cytoskeleton function

Answer 26

Support motility, regulate biochemical activities

Question 27

Integral proteins

Answer 27

Embedded in membrane
-hydrophilic head & tail
-hydrophobic middles

Question 28

Peripheral proteins

Answer 28

Not embedded in the proteins
-held in place by the ECM or cytoskeleton

Question 29

Are negative charges harder to pass cell membranes ?

Answer 29

Yes

Question 30

Simple diffusion

Answer 30

High to low concentration

Question 31

Facilitated diffusion

Answer 31

High to low concentration

Question 32

ion

Answer 32

Has charges + -

Which are hydrophilic