Test 1 Notes

Question 1

Plasma membrane is

Answer 1

The outer wrapping of a cell

Question 2

The fluid portion of the cell is called

Answer 2

Cytoplasm (ICF)

Question 3

The functions of plasma membrane are

Answer 3

Provide a barrier
Regulate exchange with environment
Respond to the environment
Structural support

Question 4

What is a phospholipid

Answer 4

Prevents substances from crossing

Has a hydrophilic and hyperphobic head

Question 5

Traits of ICF

Answer 5

High K+
Low Na+
High con. of proteins
High con. of carbs, amino acids, lipids

Question 6

Traits of ECF

Answer 6

Low K+
High Na+
Low con. of proteins

Question 7

Function of protein synthesis

Answer 7

Most cellular functions are carried out by proteins (primary function)

Question 8

What is protein degradation

Answer 8

Lysosomes break down damaged organelles and rid of pathogens

Question 9

Traits of simple diffusion

Answer 9

Passive process

Substances randomly move along a concentration gradient (high to low)

Question 10

Traits of isotonic solution cell

Answer 10

A normal cell

Same internal and external concentration

Question 11

Traits of hypotonic cell

Answer 11

Too much water

Water moves in the ICF

Question 12

Traits of Hypertonic cell

Answer 12

Too concentrated

Water moves out of ECF

Question 13

What is cotransport

Answer 13

Two things are moving in the SAME direction

Question 14

What is countertransport

Answer 14

Two things are moving in OPPOSITE directions

Question 15

The smallest unit of life

Answer 15

Cell

Question 16

Describe resting potential

Answer 16

It is a stimulus is required to active the cell

Question 17

Describe graded potential

Answer 17

Deviations from rest

Effect weakness as distance increases from origin