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BIO 253 FINAL CUMALITIVE – Questions With Factual Solutions

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BIO 253 FINAL CUMALITIVE – Questions With Factual Solutions

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BIO 253
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Uploaded on
October 30, 2025
Number of pages
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Written in
2025/2026
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BIO 253 FINAL CUMALITIVE – Questions With
Factual Solutions

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Practice questions for this set


Learn 1 /7 Study with Learn




Uneven curvatures of the cornea and lens



Choose an answer



What is the contractile unit of a What regulatory protein binds to
1 2
muscle fiber? calcium?



3 The epimysium is the: 4 What is an astigmatism?



Don't know?




Terms in this set (76)


What is the contractile The sarcomere
unit of a muscle fiber?

, What is a regulatory Tropomyosin
protein that blocks
myosin binding sites on
actin?

Neurons use what as a Acetylcholine
chemical signal that
crosses the synapse and
binds to receptors on the
motor end plate?

Is an ion channel that opens and closes to changes
A voltage gated channel:
in voltage across the membrane

The epimysium is the: CT covering around the entire muscle

A rapid sequence of changes in voltage across a
An action potential is:
membrane that sends a signal down the axon

An ion channel that Voltage gated channel
opens and closes in
response to changes in
membrane potential is a:

The thin filament is: Actin

What is a chemical signal Acetylcholine
that crosses the synapse
and binds to receptors
on the motor end plate?

Where is calcium stored Sarcoplasmic reticulum
in the muscle fiber?

What best describes Growth in muscle size
hyper trophy?

A strong sheet of tissue Aponeurosis
that acts as a tendon to
attach muscle to bone is
a:

What regulatory protein Troponin
binds to calcium?

Troponin is: A regulatory protein that binds with calcium

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