NMDCAT Quiz Biology//Support and Movement
Understanding Muscle Function
Welcome to the NMDCAT Quiz on Biology focused on support and movement in muscle fun
This quiz is designed for students preparing for their NMDCAT exams. Check out what you will learn:
- The role of calcium in muscle contraction.
- Types of muscle fibers and their characteristics.
- Muscle fatigue and energy sources.
When the muscle is required to contract, calcium ions bind with which molecule and cause them to move slightly:
Tropomyosin
Troponin
Actin
Myosin
During contraction of a skeletal muscle, the degree of contraction depend upon:
The type of scleral muscle
Number of sarcomeres involved
Number of muscle fibers participate in contraction
Size of muscle
Thin myofilament consists of:
Actin, myosin, troponin
Actin, tropomyosin, troponin
Actin, tropomyosin, fibrin
Actin, myoglobin, troponin
Which of the following changes occur when skeletal muscle contract?
The A-band shortens
The I-band shortens
The Z-lines move further apart
The H-zone becomes more visible
All the fibers innervated by a single motor neuron called as:
Motor box
Neuron-unit
Muscle unit
Motor-unit
Each A-band has a lighter stripe in its mid-section called:
A-zone
M-zone
H-zone
Z-line
During evolution , the muscles not evolved first:
Cardiac
Skeletal
Smooth
Both cardiac and skeletal
A sarcomere is a region between two:
A-bands
H-bands
Z-lines
I-bands
If the muscles were deprived of ATP, which of the following would not be affected:
Na pump of muscle membrane
Ca pump of sarcoplasmic reticulum
Length of myosin filament
Velocity of shortening
Sarcoplasm refers to a specific kind of:
Cytoplasm
Nucleoplasm
Protoplasm
Muscle cell
The primary source of energy in muscle cell is:
Glucose
ATP
Creatine phosphate
Glycogen
Not correct for Pectoral Muscle:
Striated muscle
Striped muscle
Skeletal muscle
Involuntary muscle
Amount of lactic acid restored to glycogen during rest is:
1/5th
4/5th
1/4th
3/4th
Sarcoplasm has more:
Hemoglobin
Glycogen
Myoglobin
Water in the cytosol
The brachialis muscle on the contraction lifts the,
Radius
Humerous
Ulna
Fibula
Bicep muscle:
Flexar
Extensor
Involved in locomotion
Helping in sitting
Muscles with no branched fibers and multinucleate:
Smooth
Cardiac
Skeletal
Some smooth muscles at earlier stages of development
Muscle get fatigued;
Smooth
Cardiac
Skeletal
Cardiac muscles during development
Muscle fatigue is due to:
Deprivation of ATP and deposition of lactic acid
Deposition of ATP and lack of lactic acid
Lack of ATP and lactic acid
Deposition of ATP and deposition of lactic acid
An oxygen debt develops during:
An aerobic work
Aerobic work
Tetany
Tetanus
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