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BIOLOGY 1 Marks Question

PART - 2 - Unit V : CH - 17 Locomotion and Movement · Gujarat Board (GSEB) STD 11 Science (GSEB - English Medium). 38 questions.

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38 questions · self-marked practice — reveal the answer and mark yourself.

Question 11 Mark
Which bones are present in each half of the pectoral girdle?
Answer
Each half of the pectoral girdle contains two bones- (i) Clavicle and (ii) Scapula.
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Question 31 Mark
Which bone fits into the socket of the acetabulum?
Answer
The head of the femur bone fits into the socket of the acetabulum.
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Question 51 Mark
What occurs in muscle fibres due to the signal of motor neurons?
Answer
Action potential is generated in muscle fibres due to the signal of motor neurons.
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Question 71 Mark
The mechanism of muscle contraction be best explained by which principle?
Answer
The mechanism of muscle contraction can be best explained by the Sliding Filament Theory.
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Question 91 Mark
How many units are structured in an organised manner in the dorsal part of our vertebral column?
Answer
There are 26 units structured in an organised manner in the dorsal part of our vertebral column.
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Question 101 Mark
Write the names of the bones found in the middle ear.
Answer
(i) The malleus, (ii) the incus, and (iii) the stapes.
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Question 131 Mark
What are the 11 th and 12 th ribs commonly known as?
Answer
The 11 th and 12 th ribs are commonly known as floating ribs.
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Question 151 Mark
How many bones combine to form pelvic bones? Write name of any two.
Answer
Pelvic bone is formed by the fusion of three bones. The name of two are ilium and pubis.
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Question 161 Mark
Decrease in estrogen hormone levels is a common factor in which disease?
Answer
Decrease in estrogen hormone levels is a common factor in osteoporosis.
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Question 171 Mark
Which skeleton do the leg bones and pelvic girdle constitute?
Answer
The pelvic bones and leg bones constitute the appendicular skeleton.
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Question 181 Mark
Based on which pigment are muscles classified as red and white muscles?
Answer
Muscles are classified as red and white based on the presence of myoglobin pigment.
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Question 191 Mark
Write the names of the joints that are the most mobile and give the reason.
Answer
Ball and socket joints are the most mobile joints due to the presence of synovial fluid.
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Question 201 Mark
Name the contractile protein found in muscles.
Answer
Myosin is the contractile protein found in muscles.
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Question 221 Mark
Who presented the Sliding Filament Theory of muscle contraction?
Answer
The Sliding Filament Theory of muscle contraction was presented by H.E. Huxley and A.F. Huxley.
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Question 251 Mark
During muscle contraction, in which form is chemical energy converted?
Answer
During muscle contraction, chemical energy is converted into mechanical energy.
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Question 261 Mark
In what form is stored food material found in muscles?
Answer
Stored food material in muscles is found in the form of glycogen.
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Question 271 Mark
What causes fatigue in voluntary muscles?
Answer
Fatigue in voluntary muscles is caused by the accumulation of lactic acid.
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Question 281 Mark
What is the covering found around myofibrils in striated muscles called?
Answer
The covering found around myofibrils in striated muscles is called sarcoplasmic reticulum.
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Question 291 Mark
What kind of muscles are based on the presence of the central area?
Answer
Striated muscles are multi-nucleated based on the presence of the central area.
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Question 311 Mark
What is commonly known as joint pain?
Answer
Joint pain is commonly known as arthritis or joint inflammation.
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Question 321 Mark
What is the part of myosin that contains tails called?
Answer
The part of myosin that contains tails is called light meromyosin (LMM).
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Question 331 Mark
How is the transport in the female reproductive tract?
Answer
The transport in the female reproductive tract occurs through peristaltic movement.
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Question 351 Mark
What are the ribs that do not connect to the sternum or other ribs called?
Answer
Ribs that do not connect to the sternum or other ribs are called floating ribs.
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Question 361 Mark
Which neurotransmitter flows between the nervous system and muscles?
Answer
Acetylcholine flows between the nervous system and muscles.
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Question 371 Mark
Name a muscle that has involuntary and striated characteristics.
Answer
Muscles with involuntary and striated characteristics are cardiac muscles.
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