BIOB34 FINAL EXAM ACTUAL QUESTIONS AND ANSWERS 2024;(PASS IN FIRST ATTEMPT)(100% VERIFIED)
Amylase breaks down glycogen into which of the following? (multiple answers)
a. maltose
b. branched oligosaccharides
c. sucrose
d. glucose
e. lactose Ans👌👍 - a. maltose
b. branched oligosaccharides
Some animals use a combination of supercooling AND controlled ice-foramation outside thier cells to survice cold temperatures.
a. true
b. false Ans👌👍 - a. true
Brown adipose tissue is a thermogenic tissue largely because...
a. it cycles Ca2+ across membranes in a futile cycle
b. its rete mirabile effectively retains extra heat
c. it is highly vascularized
d. the electron transport system and ATP synthase activity of its mitochondria are somewhat uncoupled Ans👌👍 - d. the electron transport system and ATP synthase activity of its mitochondria are somewhat uncoupled Which of the following would cause the resting metabolic rate of an ectotherm (e.g. a lizard) to increase (assume no other environmental parameters are changed and that the ambient temperature is 20 deg. C)?
a. painting it with a non-toxix white paint
b. immersing it in water
c. increasing the wind/airflow in the chamber
d. placing it under intense lighting Ans 👌👍 - d. placing it under intense lighting
Which of the following is TRUE of disaccharides in the mammalian digestive tract? (multiple answers)
a. salivary amylase hydrolyzes some, or most, disaccharides into component monosaccharides
b. specific disaccharide, such as sucrose, is split into component monosaccharides by any of the disaccharidases present in the small intestine (e.g. maltase, lactase, etc.)
c. they are a product of amylase catalytic action
d. if directly ingested, they pass through the oral cavity and stomach essentially intact Ans
👌👍 - c. they are a product of amylase catalytic action
d. if directly ingested, they pass through the oral cavity and stomach essentially intact
Poikilotherms do NOT exhibit or have which of the following? (multiple answers)
a. a range of tolerance
b. a thermoneutral zone
c. incipient lower lethal temperature
d. upper critical temperature Ans 👌👍 - b. a thermoneutral zone
d. upper critical temperature Both the citric acid cycle and beta oxidation of fatty acids take place int he cytoplasm.
a. true
b. false Ans👌👍 - b. false
Imagine a goldfish is acclimated to cold temperature (held for weeks at 5 C). Compared to a room temperature acclimated fish, you find that the cold acclimated fish has a higher density of mitochondria in its muscle fibers. This is an example of which kind of thermal acclimation strategy?
a. homeoviscous adaptation
b. qualitative
c. quantitative Ans 👌👍 - c. quantitative
The bison (1000 kg)and the black-tailed jackrabbit (2 kg) can be found across much of the same range in North America. Which would you predict has the broader thermoneutral zone?
a. black-tailed jackrabbit
b. no way to predict
c. bison Ans👌👍 - c. bison
Imagine you had a bearded dragon as a pet. You kept this small lizard in a terrarium in your room at a temperature of 25 C. Imagine then that you increased the temperature in the terrarium to 70 C. After an hour or two, how would the rate of O2 consumption of the muscle cells of your bearded lizard compare to the O2 consumption rate you would have measured when it was at 25 C?
a. it would be similar to that measured at 25 C
b. it would be higher than at 25 C
c. it would be zero (much lower than at 25 C)
Amylase breaks down glycogen into which of the following? (multiple answers)
a. maltose
b. branched oligosaccharides
c. sucrose
d. glucose
e. lactose Ans👌👍 - a. maltose
b. branched oligosaccharides
Some animals use a combination of supercooling AND controlled ice-foramation outside thier cells to survice cold temperatures.
a. true
b. false Ans👌👍 - a. true
Brown adipose tissue is a thermogenic tissue largely because...
a. it cycles Ca2+ across membranes in a futile cycle
b. its rete mirabile effectively retains extra heat
c. it is highly vascularized
d. the electron transport system and ATP synthase activity of its mitochondria are somewhat uncoupled Ans👌👍 - d. the electron transport system and ATP synthase activity of its mitochondria are somewhat uncoupled Which of the following would cause the resting metabolic rate of an ectotherm (e.g. a lizard) to increase (assume no other environmental parameters are changed and that the ambient temperature is 20 deg. C)?
a. painting it with a non-toxix white paint
b. immersing it in water
c. increasing the wind/airflow in the chamber
d. placing it under intense lighting Ans 👌👍 - d. placing it under intense lighting
Which of the following is TRUE of disaccharides in the mammalian digestive tract? (multiple answers)
a. salivary amylase hydrolyzes some, or most, disaccharides into component monosaccharides
b. specific disaccharide, such as sucrose, is split into component monosaccharides by any of the disaccharidases present in the small intestine (e.g. maltase, lactase, etc.)
c. they are a product of amylase catalytic action
d. if directly ingested, they pass through the oral cavity and stomach essentially intact Ans
👌👍 - c. they are a product of amylase catalytic action
d. if directly ingested, they pass through the oral cavity and stomach essentially intact
Poikilotherms do NOT exhibit or have which of the following? (multiple answers)
a. a range of tolerance
b. a thermoneutral zone
c. incipient lower lethal temperature
d. upper critical temperature Ans 👌👍 - b. a thermoneutral zone
d. upper critical temperature Both the citric acid cycle and beta oxidation of fatty acids take place int he cytoplasm.
a. true
b. false Ans👌👍 - b. false
Imagine a goldfish is acclimated to cold temperature (held for weeks at 5 C). Compared to a room temperature acclimated fish, you find that the cold acclimated fish has a higher density of mitochondria in its muscle fibers. This is an example of which kind of thermal acclimation strategy?
a. homeoviscous adaptation
b. qualitative
c. quantitative Ans 👌👍 - c. quantitative
The bison (1000 kg)and the black-tailed jackrabbit (2 kg) can be found across much of the same range in North America. Which would you predict has the broader thermoneutral zone?
a. black-tailed jackrabbit
b. no way to predict
c. bison Ans👌👍 - c. bison
Imagine you had a bearded dragon as a pet. You kept this small lizard in a terrarium in your room at a temperature of 25 C. Imagine then that you increased the temperature in the terrarium to 70 C. After an hour or two, how would the rate of O2 consumption of the muscle cells of your bearded lizard compare to the O2 consumption rate you would have measured when it was at 25 C?
a. it would be similar to that measured at 25 C
b. it would be higher than at 25 C
c. it would be zero (much lower than at 25 C)
