PSIO 201 FINAL EXAM Question and answers already
passed 2025/2026
1. homeostasis relatively constant internal physical and chemical conditions that organisms
main- tain
2. negative A feedback loop that causes a system to change in the opposite direction from
feed-
which it is moving
back loop
*resists
3. positive feedback feedback loop that causes a system to change further in the same
direction
loop
*enforces
4. positive labor and childbirth is an example of a feedback loop
5. negative thermoregulation is an example of a feedback loop
6. metabolism, the five characteristics of living things:
responsivenes
s, movement,
growth and
differentiatio
n,
reproduction
7. catabolism breakdown of larger molecules into smaller ones
8. anabolism construction of larger molecules from smaller ones
9. chemical level atomic and molecular level
10. cellular level smallest living unit of the body
11. passive diffusion movement of substances across a semipermeable membrane with
the concentra- tion gradient; this process does not require energy
1/
26
, PSIO 201 FINAL EXAM Question and answers already
passed 2025/2026
12. Movement of specific molecules across cell membranes through protein
channels
1/
26
, PSIO 201 FINAL
EXAM
facilitated diffu-
sion
13. carrier- integral proteins bind specific ions or organic
mediated the plasma membrane
transport
specialized ion channel that opens or closes in response to changes in mem-
14. voltage- brane potential
gated ion
channel
15. leaky channel channel that is always open
16. sodium- a carrier protein that uses ATP to actively transport sodium ions out of a cell a
potassi- um potassium ions into the cell
pump
the electrical charge of a neuron when it is not active
17. resting
mem- brane
potential
18. -70 mV resting membrane potential of a typical neuron
19. potassium the membrane potential at which the tendency of K+ ions to dittuse
equi- librium into the cell is equal to their tendency to dittuse out
potential
20. -90 mv equilibrium potential of K+
21. inorganic fibers
salts, organic
ma-
trix,
collagenous
2/
48
, PSIO 201 FINAL
EXAM
components of bone matrix
22. spongy bone Layer of bone tissue that has many small spaces and is found just
inside the layer of compact bone.
substrates and carry them
23. trabeculae across bone
supporting bundles of bony fibers in cancellous
24. location of spongy bone in an adult's bone
3/
48
passed 2025/2026
1. homeostasis relatively constant internal physical and chemical conditions that organisms
main- tain
2. negative A feedback loop that causes a system to change in the opposite direction from
feed-
which it is moving
back loop
*resists
3. positive feedback feedback loop that causes a system to change further in the same
direction
loop
*enforces
4. positive labor and childbirth is an example of a feedback loop
5. negative thermoregulation is an example of a feedback loop
6. metabolism, the five characteristics of living things:
responsivenes
s, movement,
growth and
differentiatio
n,
reproduction
7. catabolism breakdown of larger molecules into smaller ones
8. anabolism construction of larger molecules from smaller ones
9. chemical level atomic and molecular level
10. cellular level smallest living unit of the body
11. passive diffusion movement of substances across a semipermeable membrane with
the concentra- tion gradient; this process does not require energy
1/
26
, PSIO 201 FINAL EXAM Question and answers already
passed 2025/2026
12. Movement of specific molecules across cell membranes through protein
channels
1/
26
, PSIO 201 FINAL
EXAM
facilitated diffu-
sion
13. carrier- integral proteins bind specific ions or organic
mediated the plasma membrane
transport
specialized ion channel that opens or closes in response to changes in mem-
14. voltage- brane potential
gated ion
channel
15. leaky channel channel that is always open
16. sodium- a carrier protein that uses ATP to actively transport sodium ions out of a cell a
potassi- um potassium ions into the cell
pump
the electrical charge of a neuron when it is not active
17. resting
mem- brane
potential
18. -70 mV resting membrane potential of a typical neuron
19. potassium the membrane potential at which the tendency of K+ ions to dittuse
equi- librium into the cell is equal to their tendency to dittuse out
potential
20. -90 mv equilibrium potential of K+
21. inorganic fibers
salts, organic
ma-
trix,
collagenous
2/
48
, PSIO 201 FINAL
EXAM
components of bone matrix
22. spongy bone Layer of bone tissue that has many small spaces and is found just
inside the layer of compact bone.
substrates and carry them
23. trabeculae across bone
supporting bundles of bony fibers in cancellous
24. location of spongy bone in an adult's bone
3/
48
