Skeletal Muscle Contraction

Skeletal Muscle Contraction

11th Grade

60 Qs

quiz-placeholder

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Skeletal Muscle Contraction

Skeletal Muscle Contraction

Assessment

Quiz

Health Sciences

11th Grade

Practice Problem

Medium

Created by

Michele Loftis

Used 1+ times

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60 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What exerts the pulling force in muscle contraction?

Myosin

Actin

Tropomyosin

Troponin

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of the shortening of muscle fibers?

Muscle contraction

Muscle relaxation

Muscle elongation

Muscle fatigue

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Fill in the blank: A group of myosin molecules forms a _________.

thick filament

thin filament

muscle fiber

sarcomere

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What do actin molecules consist of?

A) Globular proteins arranged in twisted filaments

B) Linear proteins arranged in straight filaments

C) Fibrous proteins arranged in sheets

D) None of the above.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Fill in the blank: Troponin and tropomyosin are two proteins associated with the surface of the actin molecules; together, these three proteins form the ________.

thin filaments

thick filaments

myosin heads

sarcomere

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What role does Tropomyosin play in the structure of Actin filaments?

It binds calcium ions

It blocks the active binding site on Actin molecules

It forms a double strand helix

It displaces Troponin

7.

HOTSPOT QUESTION

1 min • 1 pt

Identify the myosin heads:

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