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Bio 161 PSU Final Review (Waters) questions with answers, Exams of Biology

Pennsylvania State University - AbingtonBiology

Bio 161 PSU Final Review (Waters) questions with answers

Typology: Exams

2024/2025

Available from 06/30/2025

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Bio |/161 |/PSU |/Final |/Review |/(Waters)
|/questions |/with |/answers
At |/the |/neuromuscular |/junction, |/an |/electrical |/signal |/from |/the |/motor
|/neuron |/is |/translated |/to |/a |/chemical |/signal |/and |/then |/back |/to |/an
|/electrical |/signal |/in |/the |/muscle |/cell. |/What |/proteins |/interact |/with |/the
|/released |/chemical |/to |/cause |/the |/electrical |/signal |/in |/the |/muscle |/cell? |/-
|/CORRECT |/ANSWERS |/✔✔Cation |/chemical-gated |/channels
Which |/of |/the |/following |/processes |/directly |/require |/binding |/of |/or |/the
|/use |/of |/ATP? |/Choose |/all |/that |/apply. |/- |/CORRECT |/ANSWERS |/✔✔-
|/Release |/of |/cross-bridge |/(interaction) |/between |/actin |/and |/myosin.
- |/Movement |/of |/calcium |/ions |/back |/into |/the |/sarcoplasmic |/reticulum
|/after |/contraction.
- |/Conformation |/change |/of |/myosin |/from |/the |/bent |/conformation |/to
|/the |/extended |/(activated) |/conformation.
Where |/are |/mechanical-gated |/channels |/found |/in |/the |/process |/of
|/muscle |/contraction? |/- |/CORRECT |/ANSWERS |/✔✔The |/sarcoplasmic
|/reticulum
What |/would |/happen |/if |/someone |/stabbed |/your |/leg |/with |/a |/syringe
|/full |/of |/calcium |/and |/injected |/the |/calcium |/directly |/into |/your |/muscle
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Download Bio 161 PSU Final Review (Waters) questions with answers and more Exams Biology in PDF only on Docsity!

Bio |/ 161 |/PSU |/Final |/Review |/(Waters)

|/questions |/with |/answers

At |/the |/neuromuscular |/junction, |/an |/electrical |/signal |/from |/the |/motor |/neuron |/is |/translated |/to |/a |/chemical |/signal |/and |/then |/back |/to |/an |/electrical |/signal |/in |/the |/muscle |/cell. |/What |/proteins |/interact |/with |/the |/released |/chemical |/to |/cause |/the |/electrical |/signal |/in |/the |/muscle |/cell? |/- |/CORRECT |/ANSWERS |/✔✔Cation |/chemical-gated |/channels Which |/of |/the |/following |/processes |/directly |/require |/binding |/of |/or |/the |/use |/of |/ATP? |/Choose |/all |/that |/apply. |/- |/CORRECT |/ANSWERS |/✔✔- |/Release |/of |/cross-bridge |/(interaction) |/between |/actin |/and |/myosin.

  • |/Movement |/of |/calcium |/ions |/back |/into |/the |/sarcoplasmic |/reticulum |/after |/contraction.
  • |/Conformation |/change |/of |/myosin |/from |/the |/bent |/conformation |/to |/the |/extended |/(activated) |/conformation. Where |/are |/mechanical-gated |/channels |/found |/in |/the |/process |/of |/muscle |/contraction? |/- |/CORRECT |/ANSWERS |/✔✔The |/sarcoplasmic |/reticulum What |/would |/happen |/if |/someone |/stabbed |/your |/leg |/with |/a |/syringe |/full |/of |/calcium |/and |/injected |/the |/calcium |/directly |/into |/your |/muscle

|/cells? |/- |/CORRECT |/ANSWERS |/✔✔Cross-bridges |/would |/form |/in |/the |/absence |/of |/an |/action |/potential |/from |/a |/motor |/neuron. Acetylcholine |/Esterase |/(AChE) |/- |/CORRECT |/ANSWERS |/✔✔Breaks |/down |/ACh |/in |/the |/synaptic |/cleft Troponin |/- |/CORRECT |/ANSWERS |/✔✔Binds |/to |/calcium Tropomyosin |/- |/CORRECT |/ANSWERS |/✔✔Directly |/covers |/the |/actin |/active |/sites |/that |/bind |/to |/myosin T-Tubule |/- |/CORRECT |/ANSWERS |/✔✔Extensions |/of |/the |/sarcolemma |/that |/penetrate |/into |/the |/center |/of |/the |/muscle |/cell Sarcoplasmic |/reticulum |/- |/CORRECT |/ANSWERS |/✔✔Storage |/location |/for |/calcium Calcium |/pump |/- |/CORRECT |/ANSWERS |/✔✔Active |/transport |/protein |/found |/in |/the |/sarcoplasmic |/reticulum Which |/of |/the |/following |/regions/structures |/will |/NOT |/change |/size |/during |/a |/contraction. |/- |/CORRECT |/ANSWERS |/✔✔A-band

Volkmann's |/canal |/- |/CORRECT |/ANSWERS |/✔✔Allows |/connection |/of |/Haversian |/(central) |/canals Lacunae |/- |/CORRECT |/ANSWERS |/✔✔Empty |/spaces |/within |/the |/matrix |/that |/house |/bone |/cells Canaliculi |/- |/CORRECT |/ANSWERS |/✔✔Connections |/between |/bone |/cells An |/increase |/in |/the |/amount |/of |/the |/force |/transmitted |/by |/a |/bone |/will |/result |/in |/an |/increase |/in |/bone |/matrix |/production. |/- |/CORRECT |/ANSWERS |/✔✔True |/(Force |/will |/activate |/osteocytes, |/ultimately |/leading |/to |/increased |/bone |/remodeling |/and |/deposition |/of |/matrix.) A |/disease |/that |/decreases |/the |/amount |/of |/organic |/material |/in |/bone |/matrix |/will |/result |/in |/which |/one |/of |/the |/following |/symptoms? |/- |/CORRECT |/ANSWERS |/✔✔Brittle |/bones Hormones |/are |/an |/example |/of |/a |/_____________________ |/message |/in |/our |/bodies. |/- |/CORRECT |/ANSWERS |/✔✔Chemical Which |/type |/of |/gland |/produces |/hormones? |/- |/CORRECT |/ANSWERS |/✔✔Endocrine |/glands

Hormones |/will |/only |/alter |/a |/tissue/organ |/if |/the |/cells |/of |/that |/tissue/organ |/have |/specific |/cellular |/receptors. |/- |/CORRECT |/ANSWERS |/✔✔True |/(Hormones |/require |/"receptors" |/or |/proteins |/on |/the |/surface |/or |/in |/the |/cytoplasm |/of |/cells |/to |/cause |/a |/change |/in |/that |/cells |/action.) Which |/major |/class |/of |/hormones |/typically |/have |/receptors |/in |/the |/cytoplasm |/of |/the |/target |/cell? |/- |/CORRECT |/ANSWERS |/✔✔Steroid As |/the |/overlap |/of |/thick |/and |/thin |/filaments |/decreases |/in |/a |/sarcomere, |/the |/number |/of |/myosin:actin |/interactions |/______________. |/- |/CORRECT |/ANSWERS |/✔✔Decreases The |/process |/of |/sarcomere |/relaxation |/requires |/energy. |/- |/CORRECT |/ANSWERS |/✔✔True The |/extracellular |/matrix |/of |/connective |/tissue |/is |/composed |/of |/which |/of |/the |/following |/substances? |/- |/CORRECT |/ANSWERS |/✔✔Fibers |/and |/Ground |/Substance Which |/cell |/type |/is |/primarily |/responsible |/for |/secreting |/new |/matrix |/components |/during |/initial |/bone |/growth |/AND |/remodeling? |/- |/CORRECT |/ANSWERS |/✔✔Osteoblasts Which |/cell |/type |/erodes |/and |/recycles |/matrix |/during |/remodeling? |/- |/CORRECT |/ANSWERS |/✔✔Osteoclasts

A |/person |/is |/lacking |/(through |/genetic |/mutations) |/the |/receptor |/for |/a |/steroid |/hormone. |/Which |/of |/the |/following |/observations |/are |/correct? |/- |/CORRECT |/ANSWERS |/✔✔Even |/if |/the |/hormone |/is |/present, |/there |/will |/NOT |/be |/a |/change |/in |/gene |/expression Axon |/terminals |/are |/found |/in |/the |/______. |/- |/CORRECT |/ANSWERS |/✔✔Neurohypophysis Blood |/vessels |/transport |/hormones |/between |/the |/hypothalamus |/and |/the |/____________. |/- |/CORRECT |/ANSWERS |/✔✔Adenohypophysis A |/tumor |/develops |/in |/a |/person's |/pituitary |/gland |/and |/results |/in |/excessive |/and |/prolonged |/secretion |/of |/GH. |/What |/happens |/to |/IGF- |/levels |/in |/the |/blood? |/- |/CORRECT |/ANSWERS |/✔✔They |/increase A |/tumor |/develops |/in |/a |/person's |/pituitary |/gland |/and |/results |/in |/excessive |/and |/prolonged |/secretion |/of |/GH. |/What |/is |/the |/physiological |/response |/to |/this |/tumor? |/- |/CORRECT |/ANSWERS |/✔✔Greater |/than |/normal |/height