R4RIN – MCQs, Mock Tests | Zoology Zoology MCQS[NEET-2021 to 2022]-Locomotion and Movement

Mark the correct statement?

1. All cells have mitochondria
2. All non striated muscles are involuntary
3. Cardiac muscles are not striated
4. Animal cell contains chloroplast

✅ Correct Answer: 2

The cross arm that forms the cross bridges during muscle contraction is formed by

1. HMM
2. Troponin
3. LLM
4. Both A and C

✅ Correct Answer: 1

During resting stage the binding site of action for myosin remains masked by

1. HMM
2. Troponin
3. LLM
4. None

✅ Correct Answer: 2

The macrophages in human body exhibit

1. No movement
2. movement with blood
3. peristalsis movement
4. Amoeboid movement

✅ Correct Answer: 4

Mark the incorrect statement in the following

1. Microfilaments are involved in amoeboid
2. All movement lead to locomotion
3. Cilliary movement help in passage of ova
4. None of the above/ More than one of the above

✅ Correct Answer: 2

Which of the following is not the feature of red muscle fibres

1. They have plenty of mitochondria
2. They have high content of Myoglobin
3. They have high amount of Sarcoplasmic reticulum
4. They are called aerobic muscles

✅ Correct Answer: 3

Streaming of cytoplasm is seen in

1. Amoeba
2. Leucocytes
3. Macrophages
4. All

✅ Correct Answer: 4

Which of the following statements is correct?

1. Locomotion is not a voluntary movement
2. Cytoplasmic streaming is caused by contracting microfilament
3. Cytoplasmic streaming helps in pseudopodia formation
4. B and C

✅ Correct Answer: 4

Which o the following statement about the skeletal muscles is correct?

1. They are striated muscles
2. They are voluntary muscles
3. They are primarily involved in locomotory actions
4. All

✅ Correct Answer: 4

Heart muscles are

1. Branched
2. Not fatigued
3. Striated and involuntary
4. All

✅ Correct Answer: 4

The source of Ca++ for the muscle is

1. Sarcolemma
2. T-tubule
3. Sarcosome
4. Sarcoplasmic reticulum

✅ Correct Answer: 4

The fascia surrounding a muscle is made up of-

1. Cartilage
2. Collagenous connective tissue
3. Adipose tissue
4. Blood vessels

✅ Correct Answer: 2

Contractile fibrils of muscle are called-

1. Neurofibrils
2. Yellow fibres
3. Red fibres
4. Myofibrils

✅ Correct Answer: 4

Myofibrils show alternate dark and light bands in

1. Cardia muscles
2. Striped muscle
3. Smooth muscles
4. a and b

✅ Correct Answer: 4

which one the smallest one?

1. muscle fibres
2. myofibril
3. Actin
4. sarcomere

✅ Correct Answer: 3

Z-line divides the myofibrils into-

1. Sarcomere
2. Microtubules
3. Sarcolemma
4. Sarcosome

✅ Correct Answer: 1

Sarcomere is the area between

1. 2 H-zones
2. 2 M-lines
3. 2 A-zones
4. 2 Z-lines

✅ Correct Answer: 4

Light bands contain actin and are called-

1. A-bands of isotropic
2. A-bands or Anistropic bands
3. I-bands or isotropic bands
4. I-bands of Anisotropic

✅ Correct Answer: 3

The region between the ends of the A-bands of 2 adjoining sarcomeres is called

1. The Z-bands
2. The I-bands
3. The T-tubule
4. The H-bands

✅ Correct Answer: 2

An individual sarcomere consists of

1. A stack of actin fibres
2. A stack of myosin units
3. Overlapping actin and myosin
4. None

✅ Correct Answer: 3

One myosin filament in the myofibril of skeletal muscle fibres is surrounded by how actin filaments

1. 6
2. 9
3. 6
4. 5

✅ Correct Answer: 1

Tropomysin is moved by which of following protiens

1. Calmodulin
2. Troponin
3. Actin
4. None

✅ Correct Answer: 3

The action potential that triggers a muscle contraction travels deep within the muscle cell by means of

1. Sarcoplasmic reticulum
2. Transverse tubules
3. Synapse
4. Motor and plates

✅ Correct Answer: 2

Motor end plate is a

1. Neuromuscular junction
2. Plate of motor neuron
3. Dendron of motor neuron
4. Gradient of proton motive force

✅ Correct Answer: 1

The energy for muscle contraction is most directly obtained from

1. ATP
2. Anaerobic respiration
3. Aerobic respiration
4. Phosphocreatine

✅ Correct Answer: 1

According to the sliding filament theroy

1. Actin ( thin filament ) moves on myosin ( thick filament
2. Myosin moves on actin
3. Both myosin amd actin moves each other
4. None of these

✅ Correct Answer: 1

Relaxation of muscle is due to

1. Pumping of ca++ into sacroplasmic cisternea
2. Prasense of ATP ml
3. Confirmational change in troponin and masking if actin filaments
4. All

✅ Correct Answer: 4

When a skeletal muscle shortens during contraction which of these statements is fales

1. The I - band shortens
2. The A - band shortens
3. The H - zone becomes narrow
4. The sarcomeres shorten

✅ Correct Answer: 2

The muscle band that remains unchanged during muscle of contraction and relaxation of the skeletal muscle is

1. I
2. A
3. H
4. Z- line

✅ Correct Answer: 2

Skeletal system consists of

1. Olny bones
2. Only cartilage
3. A framework of bones and a few cartilage
4. A framework of cartilage and a few bones

✅ Correct Answer: 3

Contractile unit the muscle is part of myofibril between

1. Z - line and I - band
2. Z- line and I - line
3. Z- line and A - band
4. A - bond and I - band

✅ Correct Answer: 2

The number of thick myofilaments surrounding single thin myofilament ( actin ) are

1. 2
2. 3
3. 6
4. 4

✅ Correct Answer: 2

At rest when muscle is relaxed the thin filaments interdigiate with the thick filaments only

1. Outside A - band
2. Outside H - band
3. Inside A - band
4. Inside M - line

✅ Correct Answer: 2

The ion that must be present in adequate amount for binding of cross bridges with actin is

1. Ca ++
2. Na +
3. K+
4. Mg ++

✅ Correct Answer: 1

Anaerobin work becomes painful due to accumulation of

1. Ca++ ions
2. Myosin
3. Lactic acid
4. Creatine phosphate

✅ Correct Answer: 3

Type of movement shown by paramecium is

1. Amoeboid
2. Cillary
3. Flagellar
4. Muscular

✅ Correct Answer: 2

Which of the following can be taken as a character of skeletal muscle fibre

1. Excitability
2. Extensibility
3. Contractibility
4. All of these

✅ Correct Answer: 4

Each fasciculus of skeleetal muscle fibre is surrounded by

1. Epimycium
2. Perimycium
3. Endomycium
4. Sarclemma

✅ Correct Answer: 2

What types of muscles are found in the reproductive system in human?

1. involuntary muscles
2. smooth muscles
3. voluntary muscles
4. both A and B

✅ Correct Answer: 4

The connective tissue on the outer surface of a bone is called as

1. Periosteum
2. pericardium
3. peritoneum
4. None

✅ Correct Answer: 1

Locomotory organs in starfish are

1. Lungs
2. Appendages
3. Skin
4. Tube feet

✅ Correct Answer: 4

Muscle that bends one part over another is called

1. Overlaping
2. Contraction
3. Flexor
4. Abduction

✅ Correct Answer: 3

Coronary process is a part of

1. cranium
2. heart
3. upper jaw
4. lower jaw

✅ Correct Answer: 4

Foramen magnum and occipital condyles are found in

1. Occipital bone
2. Incus bone
3. Parital bone
4. Squamosal bone

✅ Correct Answer: 1

Muscle that brings the limbs towards midline of body is known as

1. Abductor
2. Extensor
3. Adductor
4. Flexor

✅ Correct Answer: 3

One myosin filament in the myofibril of skeletal muscale fibre is surrounded by how many actin filaments

1. Two
2. Four
3. Six
4. Eight

✅ Correct Answer: 3

Abductor muscles is antagonist of

1. Adductor
2. Rotator
3. Flexor
4. Pronator

✅ Correct Answer: 1

Functional unit of a muscle fibre is

1. Thick filament
2. Sarcomere
3. Thin filament
4. Myofibrils

✅ Correct Answer: 2

The only movable bone in the skull is

1. Maxilla
2. Mandible
3. Frontal
4. Occipital

✅ Correct Answer: 2

Which of the following is the regulatory muscle protein having double chain structure

1. Troponin
2. Actin
3. Myosin
4. Tropomyosin

✅ Correct Answer: 4

Elbow joint is a type of which joint?

1. Planar joint
2. Condyloid Joint
3. Hinge joint
4. Ball and Socket joint

✅ Correct Answer: 3

Time taken by a singal muscle twitch is

1. 1 second
2. 0.1 second
3. 10 seconds
4. 2 seconds

✅ Correct Answer: 2

Sutures present between various bones of skull are ___ joint ?

1. Planar
2. Cartilaginous
3. Saddle
4. Fibrous

✅ Correct Answer: 4

Cartilaginous joints

1. permit free movement
2. Are not found in symphysis
3. Are found in the bodies of vertebrae
4. All

✅ Correct Answer: 3

The constraction of muscle of shortest duration is seen in

1. Jaws
2. Eye lide
3. Heart
4. Intestine

✅ Correct Answer: 2

The muscle fatigue occurs due to accumulation of

1. CO2
2. Lactic period
3. Creatine phosphate
4. Myosin ATpase

✅ Correct Answer: 2

Hinge joints

1. are cartilaginous joints
2. Permit movements in multi direction
3. Not found in knee
4. None

✅ Correct Answer: 4

In a contracted skeletal muscle fibre

1. M line disappears
2. H- zone elongates
3. I - band remains constant
4. A- band disappears

✅ Correct Answer: 1

Joints between carpals are

1. Fibrous joints
2. Cartilaginous joints
3. Gliding joints
4. Planar joints

✅ Correct Answer: 3

In old age stiffness of joints is due to the

1. Decrease in synovial fluid
2. Hardening of bones
3. Decrease in Calcium
4. None

✅ Correct Answer: 1