340003
Mark the feature which is not associated with white muscle fibres.
1 Lighter in colour
2 These muscles have a fast rate of contraction but for a short period
3 They depend mainly on glycolysis for energy production and soon get fatigued
4 Less sarcoplasmic reticulum compared to red muscle fibres
Explanation:
Amount of sarcoplasmic reticulum is high in white muscle fibres.
BIOXI20: LOCOMOTION AND MOVEMENT
340004
Assertion : Red muscles depend on anaerobic process for energy. Reason : Red muscles have few number of mitochondria in them.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Red muscle fibres are dark red in colour due to presence of Myoglobin a red haemoprotein. Myoglobin binds and stores oxygen as oxyhaemoglobin. Oxyhaemoglobin will release oxygen for utilization during muscle contraction. Red muscle fibre is rich in mitochondria and it carries out aerobic oxidation. Red muscle fibre carries out sustained work at slow rate for a long time.
BIOXI20: LOCOMOTION AND MOVEMENT
340005
Statement A : Muscle contraction is intiated by signals sent by CNS via a sensory neuron. Statement B : Repeated activation of the muscles can lead to lactic acid accumulation in them.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Muscle contraction is initiated by signals sent by CNS via a motor neuron.
BIOXI20: LOCOMOTION AND MOVEMENT
340006
Find the correct order of stages of muscle contraction?
1 Stimuli \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Release of \(\mathrm{Ca}^{2+} \rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Sliding of actin filaments
2 Stimuli \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Sliding of actin filaments
3 Stimuli \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Cross bridges formation \(\rightarrow\) Sliding of actin filaments \(\rightarrow\)
4 Stimuli \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Release of \(\mathrm{Ca}^{2+} \rightarrow\) Cross bridges formation \(\rightarrow\) Sliding of actin filaments
Explanation:
The correct order of stages of muscle contraction is as follow: Stimuli-Release of Neurotransmitter Excitation of sarcolemma-Release of \(\mathrm{Ca}^{2+}\) - Cross bridges formation - Sliding of actin filaments.
BIOXI20: LOCOMOTION AND MOVEMENT
340007
ATP-ase needed for muscle contraction is present over
1 Actinin
2 Troponin
3 Actin
4 Myosin
Explanation:
ATP -ase needed for muscle contraction is present over myosin.
340003
Mark the feature which is not associated with white muscle fibres.
1 Lighter in colour
2 These muscles have a fast rate of contraction but for a short period
3 They depend mainly on glycolysis for energy production and soon get fatigued
4 Less sarcoplasmic reticulum compared to red muscle fibres
Explanation:
Amount of sarcoplasmic reticulum is high in white muscle fibres.
BIOXI20: LOCOMOTION AND MOVEMENT
340004
Assertion : Red muscles depend on anaerobic process for energy. Reason : Red muscles have few number of mitochondria in them.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Red muscle fibres are dark red in colour due to presence of Myoglobin a red haemoprotein. Myoglobin binds and stores oxygen as oxyhaemoglobin. Oxyhaemoglobin will release oxygen for utilization during muscle contraction. Red muscle fibre is rich in mitochondria and it carries out aerobic oxidation. Red muscle fibre carries out sustained work at slow rate for a long time.
BIOXI20: LOCOMOTION AND MOVEMENT
340005
Statement A : Muscle contraction is intiated by signals sent by CNS via a sensory neuron. Statement B : Repeated activation of the muscles can lead to lactic acid accumulation in them.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Muscle contraction is initiated by signals sent by CNS via a motor neuron.
BIOXI20: LOCOMOTION AND MOVEMENT
340006
Find the correct order of stages of muscle contraction?
1 Stimuli \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Release of \(\mathrm{Ca}^{2+} \rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Sliding of actin filaments
2 Stimuli \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Sliding of actin filaments
3 Stimuli \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Cross bridges formation \(\rightarrow\) Sliding of actin filaments \(\rightarrow\)
4 Stimuli \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Release of \(\mathrm{Ca}^{2+} \rightarrow\) Cross bridges formation \(\rightarrow\) Sliding of actin filaments
Explanation:
The correct order of stages of muscle contraction is as follow: Stimuli-Release of Neurotransmitter Excitation of sarcolemma-Release of \(\mathrm{Ca}^{2+}\) - Cross bridges formation - Sliding of actin filaments.
BIOXI20: LOCOMOTION AND MOVEMENT
340007
ATP-ase needed for muscle contraction is present over
1 Actinin
2 Troponin
3 Actin
4 Myosin
Explanation:
ATP -ase needed for muscle contraction is present over myosin.
340003
Mark the feature which is not associated with white muscle fibres.
1 Lighter in colour
2 These muscles have a fast rate of contraction but for a short period
3 They depend mainly on glycolysis for energy production and soon get fatigued
4 Less sarcoplasmic reticulum compared to red muscle fibres
Explanation:
Amount of sarcoplasmic reticulum is high in white muscle fibres.
BIOXI20: LOCOMOTION AND MOVEMENT
340004
Assertion : Red muscles depend on anaerobic process for energy. Reason : Red muscles have few number of mitochondria in them.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Red muscle fibres are dark red in colour due to presence of Myoglobin a red haemoprotein. Myoglobin binds and stores oxygen as oxyhaemoglobin. Oxyhaemoglobin will release oxygen for utilization during muscle contraction. Red muscle fibre is rich in mitochondria and it carries out aerobic oxidation. Red muscle fibre carries out sustained work at slow rate for a long time.
BIOXI20: LOCOMOTION AND MOVEMENT
340005
Statement A : Muscle contraction is intiated by signals sent by CNS via a sensory neuron. Statement B : Repeated activation of the muscles can lead to lactic acid accumulation in them.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Muscle contraction is initiated by signals sent by CNS via a motor neuron.
BIOXI20: LOCOMOTION AND MOVEMENT
340006
Find the correct order of stages of muscle contraction?
1 Stimuli \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Release of \(\mathrm{Ca}^{2+} \rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Sliding of actin filaments
2 Stimuli \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Sliding of actin filaments
3 Stimuli \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Cross bridges formation \(\rightarrow\) Sliding of actin filaments \(\rightarrow\)
4 Stimuli \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Release of \(\mathrm{Ca}^{2+} \rightarrow\) Cross bridges formation \(\rightarrow\) Sliding of actin filaments
Explanation:
The correct order of stages of muscle contraction is as follow: Stimuli-Release of Neurotransmitter Excitation of sarcolemma-Release of \(\mathrm{Ca}^{2+}\) - Cross bridges formation - Sliding of actin filaments.
BIOXI20: LOCOMOTION AND MOVEMENT
340007
ATP-ase needed for muscle contraction is present over
1 Actinin
2 Troponin
3 Actin
4 Myosin
Explanation:
ATP -ase needed for muscle contraction is present over myosin.
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BIOXI20: LOCOMOTION AND MOVEMENT
340003
Mark the feature which is not associated with white muscle fibres.
1 Lighter in colour
2 These muscles have a fast rate of contraction but for a short period
3 They depend mainly on glycolysis for energy production and soon get fatigued
4 Less sarcoplasmic reticulum compared to red muscle fibres
Explanation:
Amount of sarcoplasmic reticulum is high in white muscle fibres.
BIOXI20: LOCOMOTION AND MOVEMENT
340004
Assertion : Red muscles depend on anaerobic process for energy. Reason : Red muscles have few number of mitochondria in them.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Red muscle fibres are dark red in colour due to presence of Myoglobin a red haemoprotein. Myoglobin binds and stores oxygen as oxyhaemoglobin. Oxyhaemoglobin will release oxygen for utilization during muscle contraction. Red muscle fibre is rich in mitochondria and it carries out aerobic oxidation. Red muscle fibre carries out sustained work at slow rate for a long time.
BIOXI20: LOCOMOTION AND MOVEMENT
340005
Statement A : Muscle contraction is intiated by signals sent by CNS via a sensory neuron. Statement B : Repeated activation of the muscles can lead to lactic acid accumulation in them.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Muscle contraction is initiated by signals sent by CNS via a motor neuron.
BIOXI20: LOCOMOTION AND MOVEMENT
340006
Find the correct order of stages of muscle contraction?
1 Stimuli \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Release of \(\mathrm{Ca}^{2+} \rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Sliding of actin filaments
2 Stimuli \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Sliding of actin filaments
3 Stimuli \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Cross bridges formation \(\rightarrow\) Sliding of actin filaments \(\rightarrow\)
4 Stimuli \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Release of \(\mathrm{Ca}^{2+} \rightarrow\) Cross bridges formation \(\rightarrow\) Sliding of actin filaments
Explanation:
The correct order of stages of muscle contraction is as follow: Stimuli-Release of Neurotransmitter Excitation of sarcolemma-Release of \(\mathrm{Ca}^{2+}\) - Cross bridges formation - Sliding of actin filaments.
BIOXI20: LOCOMOTION AND MOVEMENT
340007
ATP-ase needed for muscle contraction is present over
1 Actinin
2 Troponin
3 Actin
4 Myosin
Explanation:
ATP -ase needed for muscle contraction is present over myosin.
340003
Mark the feature which is not associated with white muscle fibres.
1 Lighter in colour
2 These muscles have a fast rate of contraction but for a short period
3 They depend mainly on glycolysis for energy production and soon get fatigued
4 Less sarcoplasmic reticulum compared to red muscle fibres
Explanation:
Amount of sarcoplasmic reticulum is high in white muscle fibres.
BIOXI20: LOCOMOTION AND MOVEMENT
340004
Assertion : Red muscles depend on anaerobic process for energy. Reason : Red muscles have few number of mitochondria in them.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Red muscle fibres are dark red in colour due to presence of Myoglobin a red haemoprotein. Myoglobin binds and stores oxygen as oxyhaemoglobin. Oxyhaemoglobin will release oxygen for utilization during muscle contraction. Red muscle fibre is rich in mitochondria and it carries out aerobic oxidation. Red muscle fibre carries out sustained work at slow rate for a long time.
BIOXI20: LOCOMOTION AND MOVEMENT
340005
Statement A : Muscle contraction is intiated by signals sent by CNS via a sensory neuron. Statement B : Repeated activation of the muscles can lead to lactic acid accumulation in them.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Muscle contraction is initiated by signals sent by CNS via a motor neuron.
BIOXI20: LOCOMOTION AND MOVEMENT
340006
Find the correct order of stages of muscle contraction?
1 Stimuli \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Release of \(\mathrm{Ca}^{2+} \rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Sliding of actin filaments
2 Stimuli \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Sliding of actin filaments
3 Stimuli \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Cross bridges formation \(\rightarrow\) Sliding of actin filaments \(\rightarrow\)
4 Stimuli \(\rightarrow\) Release of Neurotransmitter \(\rightarrow\) Excitation of sarcolemma \(\rightarrow\) Release of \(\mathrm{Ca}^{2+} \rightarrow\) Cross bridges formation \(\rightarrow\) Sliding of actin filaments
Explanation:
The correct order of stages of muscle contraction is as follow: Stimuli-Release of Neurotransmitter Excitation of sarcolemma-Release of \(\mathrm{Ca}^{2+}\) - Cross bridges formation - Sliding of actin filaments.
BIOXI20: LOCOMOTION AND MOVEMENT
340007
ATP-ase needed for muscle contraction is present over
1 Actinin
2 Troponin
3 Actin
4 Myosin
Explanation:
ATP -ase needed for muscle contraction is present over myosin.