BIOS 256 FINAL EXAM QUESTIONS
WITH DETAILED VERIFIED ANSWERS
3 buffer systems in the body - correct answer- (1) the
carbonic acid-sodium bicarbonate buffer system, (2) the
phosphate buffer system, and (3) the protein buffer system.
4 reactions in cellular respirations - correct answer- 1.
glycolysis: one glucose molecule into two pyruvic acid molecules
2.Formation of acetyl CoA: prepares pyruvic acid for the krebs
cycle
3. Krebs cycle: oxidizing acetyl CoA into CO2, ATP, NADH, and
FADH
4. Electron transport chain
ADH function - correct answer- ADH responds to
increased osmolarity, by inserting aquaporins in late DCT and
collecting ducts, which increases the permeability to water and
allows for more water to be reabsorbed, decreasing blood
osmolarity, increasing blood volume, increasing blood pressure
,Aerobic respirations - correct answer- when oxygen is
present, all 4 normal reactions occur
Anaerobic respirations - correct answer- When oxygen is
not present, pyruvic acid is converted into lactic acid
bulbourethral gland - correct answer- during
ejactulation, secretes alkaline fluid into the urethra to protect
the sperm
changes during pregnancy - correct answer- pushes
maternal intestines, liver, and stomach superiorly, elevates the
diaphragm, and widens the thoracic cavity,
Cleavage of zygote - correct answer- Mitotic division
after fertilization
Day 1: two-cell stage
Day 2: four-cell stage
Day 3: eight-cell stage
Day 4: morula
Day 5: blastocyst
Day 6: Implantation in uterine wall
, FIGURE 29.5
Complex inheritance - correct answer- combined effects
of many genes and environmental factors, example even if
someone inherits several genes for tallness, they may not reach
full potential of tallness due to environmental factors.
Corpus luteum function - correct answer- produces
progesterone, estrogen, relaxin, and inhibin, until it degenerates
into the corpus albicans
Cremaster muscle function - correct answer- elevates
the testes closer to the body in response to cold temperatures
Dartos muscle function - correct answer- "wrinkling" of
scrotum to reduce heat loss in cold weather
Describe the first trimester? - correct answer- The first
trimester is from conception to 13 weeks. This period is very
critical to babies health due to the extensive oran-system
development, and baby is most vulnerable to teratogens.
WITH DETAILED VERIFIED ANSWERS
3 buffer systems in the body - correct answer- (1) the
carbonic acid-sodium bicarbonate buffer system, (2) the
phosphate buffer system, and (3) the protein buffer system.
4 reactions in cellular respirations - correct answer- 1.
glycolysis: one glucose molecule into two pyruvic acid molecules
2.Formation of acetyl CoA: prepares pyruvic acid for the krebs
cycle
3. Krebs cycle: oxidizing acetyl CoA into CO2, ATP, NADH, and
FADH
4. Electron transport chain
ADH function - correct answer- ADH responds to
increased osmolarity, by inserting aquaporins in late DCT and
collecting ducts, which increases the permeability to water and
allows for more water to be reabsorbed, decreasing blood
osmolarity, increasing blood volume, increasing blood pressure
,Aerobic respirations - correct answer- when oxygen is
present, all 4 normal reactions occur
Anaerobic respirations - correct answer- When oxygen is
not present, pyruvic acid is converted into lactic acid
bulbourethral gland - correct answer- during
ejactulation, secretes alkaline fluid into the urethra to protect
the sperm
changes during pregnancy - correct answer- pushes
maternal intestines, liver, and stomach superiorly, elevates the
diaphragm, and widens the thoracic cavity,
Cleavage of zygote - correct answer- Mitotic division
after fertilization
Day 1: two-cell stage
Day 2: four-cell stage
Day 3: eight-cell stage
Day 4: morula
Day 5: blastocyst
Day 6: Implantation in uterine wall
, FIGURE 29.5
Complex inheritance - correct answer- combined effects
of many genes and environmental factors, example even if
someone inherits several genes for tallness, they may not reach
full potential of tallness due to environmental factors.
Corpus luteum function - correct answer- produces
progesterone, estrogen, relaxin, and inhibin, until it degenerates
into the corpus albicans
Cremaster muscle function - correct answer- elevates
the testes closer to the body in response to cold temperatures
Dartos muscle function - correct answer- "wrinkling" of
scrotum to reduce heat loss in cold weather
Describe the first trimester? - correct answer- The first
trimester is from conception to 13 weeks. This period is very
critical to babies health due to the extensive oran-system
development, and baby is most vulnerable to teratogens.
