BIOB34 Final Exam UPDATED ACTUAL Questions and CORRECT Answers
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Course
BIOB34
Institution
BIOB34
BIOB34 Final Exam UPDATED ACTUAL
Questions and CORRECT Answers
A Band: - CORRECT ANSWER- Dark colour band. Reflects myosin
Active Tension: - CORRECT ANSWER- Tension exerted by muscle (follows lengthtension relationship)
All cells have an electric potential, but neurons... - CORRECT ANSWER- ......
BIOB34 Final Exam UPDATED ACTUAL
Questions and CORRECT Answers
A Band: - CORRECT ANSWER✔✔- Dark colour band. Reflects myosin
Active Tension: - CORRECT ANSWER✔✔- Tension exerted by muscle (follows length-
tension relationship)
All cells have an electric potential, but neurons... - CORRECT ANSWER✔✔- ... change
theirs
Alpha Actin: - CORRECT ANSWER✔✔- Anchors actin to Z Disc
Asynchronous Flight Muscles: - CORRECT ANSWER✔✔- Attach to thorax instead of
wings. Activated when compressed. Troponin bridge connects myosin head and troponin
complex. When muscle is contracted, it pulls away troponin bridge, which causes myosin to
bind
At axon terminals, there are no longer Na channels, but... - CORRECT ANSWER✔✔- ... Ca
channels which open at depolarization
At depolarization state of membrane... - CORRECT ANSWER✔✔- ... Na channel is open, K
channel is closed. Na rushes into cell
At repolarization state of membrane... - CORRECT ANSWER✔✔- ... Na channel (H Gate)
is closed, K channel is open. K moves out
At resting state of membrane... - CORRECT ANSWER✔✔- ... Na channel (M Gate) is
closed, K channel is closed. No net movement
At undershoot state of membrane... - CORRECT ANSWER✔✔- ... Na channel (M and H
Gate) is closed. K channel is open. K moves out of cell
, Axon: - CORRECT ANSWER✔✔- Conducts electric signal to presynaptic terminal
Ca induces vesicle release by... - CORRECT ANSWER✔✔- ... turning on Protein Kinase A
which phosphorylates synapsin that is tethering vesicle to cytoskeleton (actin)
Ca influx into myofibre breaks... - CORRECT ANSWER✔✔- ... DHPRs from RyR,
allowing Ca to exit SR
CapZ: - CORRECT ANSWER✔✔- Capping protein added to barbed (fast growing) end of
actin
Cell Body (Soma): - CORRECT ANSWER✔✔- Integrates input and generates output to
axon
Centralized Nervous System: - CORRECT ANSWER✔✔- Centralized in one spot, usually
head. Usually bilateral body symmetry (Chordates, spiders, insects, and molluscs)
Cephalization: - CORRECT ANSWER✔✔- Develop brain in head (anterior) of animal
Closure of H Gate prevents... - CORRECT ANSWER✔✔- ... backwards propagation
CO2 and NO2 are synthesized on demand because... - CORRECT ANSWER✔✔- ... they
can easily diffuse through membrane and stimulate postsynaptic cell
Criteria for neurotransmitter: - CORRECT ANSWER✔✔- 1. Synthesized by neuron
2. Released from presynaptic terminal following depolarization
3. Binds to receptor on postsynaptic cell
4. Causes detectable effect in postsynaptic cell
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