b34

Question 1

pressure needed to offset movement of pure solvent (ex. H20) across semipermeable membrane

Answer 1

osmotic membrane

Question 2

pressure that fluid exerts on surroundings

Answer 2

hydrostatic pressure

Question 3

concentration in cell is higher than surrounding, water moves out of the cell into the solution

Answer 3

hypertonic

Question 4

concentration in the cell or of solute is lower than that of surrounding, water moves into the cell

Answer 4

hypotonic

Question 5

a solution with the same concentration of solutes as the surrounding tissue

Answer 5

isotonic

Question 6

the flow of charge

Answer 6

current

Question 7

examples of current are

Answer 7

movements of electrons, movement of ions

Question 8

what is a good conductor of charge

Answer 8

copper

Question 9

what is not a good conductor of charge but rather a good blocker of charge

Answer 9

silicon

Question 10

electrical driving force

Answer 10

voltage

Question 11

what is a biological phenomena that acts like a DC current?

Answer 11

heart beating, flow of fluid (blood)

Question 12

current flowing (more or less current) in one direction only (does not cross 0V)

Answer 12

direct current - DC

Question 13

what are the two types of current

Answer 13

DC (direct current) and AC (alternating currrent)

Question 14

why do we rely on AC

Answer 14

because it doesn’t heat up like DC

Question 15

what is a biological example of AC

Answer 15

action potentials.

Question 16

Hertz (Hz) is a unit of frequency of complete cycles per second