BI 212 MIDTERM EXAM QUESTIONS WITH VERIFIED SOLUTIONS RATED
1. The size range of an 1 to 100;
individual cell is from
to mi-
crometers.
2. Cells cannot get rate of dittusion; nutrients (how long it takes for nutrients to get to middle
much larger than 100 of cell)
micrometers because
they are limited by
the of
.
3. Cells are small and high; nutrients
have a SA/V ra-
tio to increase access
to .
4. Cells try to find the surface area and rate of dittusion
sweet spot between
maximizing
5. Animals make heat volume; surface area
in proportion to their
and lose
heat in proportion to
their
6. are tempera- ectotherms
ture conformers; ani-
mals that have an in-
ternal body tempera-
ture equal to their envi-
ronment (usually very
,BI 212 MIDTERM EXAM QUESTIONS WITH VERIFIED SOLUTIONS RATED
small animals. cant
keep up with heat loss
due to their high SA/V
ratio, so they conform)
7. are temper- endotherms
ature regulators; ani-
mals that make their
own heat to maintain a
constant body temper-
ature
8. Ectotherms use behavior
rather than
metabolic processes to
control body temp.
9. use tempera- ectotherms
ture to regulate metab-
olism
10. What do endotherms metabolic processes and behavior
use to maintain a con-
stant body temp?
11. The resting metabolic endotherm; ectotherm
rate of an is
about 10x that of an
12. The resting metabolic 10
rate of an endotherm
,BI 212 MIDTERM EXAM QUESTIONS WITH VERIFIED SOLUTIONS RATED
is about times
that of an ectotherm
13. Facilitated diffusion require energy from the cell
does NOT
14. The NET force of the charge and concentration gradient
determines which
direction an ion will
flow
15. Active transport proteins; ATP; active transport pump
are used to maintain
membrane potential.
They use to move
molecules AGAINST
their concentration
gradient. Animals and
Plants have an
that maintains their
membrane potential.
16. When an animal is try- ATP; shivering
ing to warm up it burns
by
to produce heat
17. When an animal is shiv- burning ATP
ering to warm up, it is
18. metabolic thermogenesis
, BI 212 MIDTERM EXAM QUESTIONS WITH VERIFIED SOLUTIONS RATED
does
not consume ATP
19. metabolic thermogen- ATP
esis does not consume
20. is metabolic thermogenesis
a mechanism for gen-
erating heat, instead of
ATP
21. and shivering and metabolic thermogenesis
are the
ways we spend energy
to stay warm
22. Metabolic thermogen- increased body temp leads to thermostat shutting ott heating mecha-
esis is a negative feed- nisms
back loop because
23. If a problem says an it is not shivering (or burning ATP)
animal is "resting" that
means
24. During metabolic ther- ATP
mogenesis, the body is
not consuming more
while trying to
heat up
25. a hexokinase (an enzyme that phosphorylates hexoses (six-carbon sugars),
forming hexose phosphate)
1. The size range of an 1 to 100;
individual cell is from
to mi-
crometers.
2. Cells cannot get rate of dittusion; nutrients (how long it takes for nutrients to get to middle
much larger than 100 of cell)
micrometers because
they are limited by
the of
.
3. Cells are small and high; nutrients
have a SA/V ra-
tio to increase access
to .
4. Cells try to find the surface area and rate of dittusion
sweet spot between
maximizing
5. Animals make heat volume; surface area
in proportion to their
and lose
heat in proportion to
their
6. are tempera- ectotherms
ture conformers; ani-
mals that have an in-
ternal body tempera-
ture equal to their envi-
ronment (usually very
,BI 212 MIDTERM EXAM QUESTIONS WITH VERIFIED SOLUTIONS RATED
small animals. cant
keep up with heat loss
due to their high SA/V
ratio, so they conform)
7. are temper- endotherms
ature regulators; ani-
mals that make their
own heat to maintain a
constant body temper-
ature
8. Ectotherms use behavior
rather than
metabolic processes to
control body temp.
9. use tempera- ectotherms
ture to regulate metab-
olism
10. What do endotherms metabolic processes and behavior
use to maintain a con-
stant body temp?
11. The resting metabolic endotherm; ectotherm
rate of an is
about 10x that of an
12. The resting metabolic 10
rate of an endotherm
,BI 212 MIDTERM EXAM QUESTIONS WITH VERIFIED SOLUTIONS RATED
is about times
that of an ectotherm
13. Facilitated diffusion require energy from the cell
does NOT
14. The NET force of the charge and concentration gradient
determines which
direction an ion will
flow
15. Active transport proteins; ATP; active transport pump
are used to maintain
membrane potential.
They use to move
molecules AGAINST
their concentration
gradient. Animals and
Plants have an
that maintains their
membrane potential.
16. When an animal is try- ATP; shivering
ing to warm up it burns
by
to produce heat
17. When an animal is shiv- burning ATP
ering to warm up, it is
18. metabolic thermogenesis
, BI 212 MIDTERM EXAM QUESTIONS WITH VERIFIED SOLUTIONS RATED
does
not consume ATP
19. metabolic thermogen- ATP
esis does not consume
20. is metabolic thermogenesis
a mechanism for gen-
erating heat, instead of
ATP
21. and shivering and metabolic thermogenesis
are the
ways we spend energy
to stay warm
22. Metabolic thermogen- increased body temp leads to thermostat shutting ott heating mecha-
esis is a negative feed- nisms
back loop because
23. If a problem says an it is not shivering (or burning ATP)
animal is "resting" that
means
24. During metabolic ther- ATP
mogenesis, the body is
not consuming more
while trying to
heat up
25. a hexokinase (an enzyme that phosphorylates hexoses (six-carbon sugars),
forming hexose phosphate)
