# 1Pelbagai pilihan
What is the Sliding Filament Theory about?
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Sliding Filament Theory
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Sliding Filament Theory
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Universiti
Sains
Sliding Filament Theory
4
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# 2Pelbagai pilihan
Which two proteins are mainly involved in the Sliding Filament Theory?
Actin and Myosin
Keratin and Collagen
Hemoglobin and Insulin
Gluten and Lactose
# 3Pelbagai pilihan
In the Sliding Filament Theory, what happens to the muscle when it contracts?
It gets longer
It stays the same
It gets shorter
It disappears
# 4Pelbagai pilihan
Which part of the body uses the Sliding Filament Theory?
Brain
Bones
Muscles
Heart only
# 5Pelbagai pilihan
What happens to the actin and myosin filaments during muscle contraction?
They break apart
They disappear
They slide past each other
They stay still
# 6Pelbagai pilihan
What is the role of myosin in muscle contraction?
To relax muscles
To make muscles grow
To pull on actin
To produce energy
# 7Pelbagai pilihan
When muscles relax, what happens to the actin and myosin filaments?
They disappear
They slide apart
They harden
They become shorter
# 8Pelbagai pilihan
Why is energy important in the Sliding Filament Theory?
It keeps us awake
It powers muscle contraction
It makes muscles grow
It is not needed
# 9Pelbagai pilihan
What would happen if actin and myosin could not slide past each other?
Muscles would be too strong
Muscles could not contract
Muscles would grow faster
Muscles would disappear
# 10Pelbagai pilihan
In the Sliding Filament Theory, what happens to the sarcomere during muscle contraction?
It lengthens
It shortens
It stays the same
It twists
# 11Pelbagai pilihan
Which ion is crucial for initiating the muscle contraction process?
Sodium
Calcium
Potassium
Chloride
# 12Pelbagai pilihan
What is the role of myosin in muscle contraction?
It binds to calcium
It forms cross-bridges with actin
It inhibits actin
It provides structural support
# 13Pelbagai pilihan
What is the name of the structure formed by actin and myosin filaments overlapping?
Cross-bridge
Z-line
A-band
I-band
# 14Pelbagai pilihan
Which of these bands remains unchanged during muscle contraction?
H-zone
A-band
I-band
Z-line
# 15Pelbagai pilihan
What is the function of tropomyosin in the muscle contraction process?
Activates myosin
Blocks myosin binding sites on actin
Releases calcium
Converts ATP to ADP
# 16Pelbagai pilihan
What happens to the H-zone as the muscle fully contracts?
It becomes larger
It becomes smaller
It stays the same
It disappears
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