284581
The contractile regulatory proteins that mask and unmask active sites in the sarcomere are
1 Troponin and Tropomyosin
2 Troponin and Myosin
3 Actin and Myosin
4 Tropnin-I and Troponin-C
Explanation:
A Troponin is a muscle protein of heart found in the blood which is attached with one of ends of the tropomyosin molecules. Troponin is made up of three subunits. (a)Troponin-I, (b) Troponin-T, (c) Troponin-C. - Tropomyosin is a contractile protein in the relaxed state of the muscle situated in such a way, that the active sites remain covered by the tropomysin and attached at the terminal end of actin.
TS EAMCET-2015
Neural Control and Coordination
284583
Specialized cells that are sensitive to vibration, pain and tension are called
1 Proprioceptors
2 Baroreceptors
3 Statoacoustic receptors
4 Frigidoreceptors
Explanation:
A Cells that are sensitive to vibration, pain and tension are called proprioceptors, these organs embedded with muscles, tendons, ligaments and joints, are responsible for sending continuously information to the brain.
MHT CET-04.10.2020 Shift-I
Neural Control and Coordination
284585
Which of the following option shows correct order of some stages of muscle contraction from the beginning to the end of the process?
1 Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Release of \(\mathrm{Ca}^{++} \rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of \(\mathrm{T}\)-system \(\rightarrow\) sliding of actin filaments.
2 Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Excitation of T-system \(\rightarrow\) Release of \(\mathrm{Ca}^{++} \rightarrow\) Cross bridges formation \(\rightarrow\) sliding of actin filaments \(\rightarrow\) ' \(\mathrm{H}\) ' band diminishes.
3 Stimuli \(\rightarrow\) Excitation of T-system \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Cross bridges Formation \(\rightarrow\) sliding of actin filaments \(\rightarrow\) ' \(\mathrm{H}\) ' band diminishes.
4 Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of T-system \(\rightarrow\) sliding of actin filament
Explanation:
B Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Excitation of T-system \(\rightarrow\) Release of \(\mathrm{Ca}^{++} \rightarrow\) Cross bridges formation \(\rightarrow\) Sliding of Actin filaments \(\rightarrow{ }^{\prime} \mathrm{H}^{\prime}\) band diminishes. During muscle contraction the myosin heads come in close contact with the thin filaments.
GUJCET-2011
Neural Control and Coordination
284587
Resting membrane potential is maintained by
1 Hormones
2 Neurotransmitters
3 Ion pumps
4 None of the above
Explanation:
C Sodium pump starts working to maintain the normal resting membrane potential by expelling \(\mathrm{Na}\) and in taking of \(\mathrm{K}^{+}\). Thus, resting membrane potential is maintained by ion pumps.
Assam CEE-2014
Neural Control and Coordination
284588
In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive :-
1 \(\mathrm{K}^{+}\)and \(\mathrm{Na}^{+}\)out of the cell
2 \(\mathrm{Na}^{+}\)into the cell
3 \(\mathrm{Na}^{+}\)out of the cell
4 \(\mathrm{K}^{+}\)into the cell
Explanation:
B In the resting state of the neural membrane, diffusion due to concentration gradients would drive \(\mathrm{K}^{+}\) into the cell. The concentration of potassium ions is higher inside the cell compared to outside, so they tend to move from areas of higher concentration to area of lower concentration. It maintain electric potential across the cell membrane.
284581
The contractile regulatory proteins that mask and unmask active sites in the sarcomere are
1 Troponin and Tropomyosin
2 Troponin and Myosin
3 Actin and Myosin
4 Tropnin-I and Troponin-C
Explanation:
A Troponin is a muscle protein of heart found in the blood which is attached with one of ends of the tropomyosin molecules. Troponin is made up of three subunits. (a)Troponin-I, (b) Troponin-T, (c) Troponin-C. - Tropomyosin is a contractile protein in the relaxed state of the muscle situated in such a way, that the active sites remain covered by the tropomysin and attached at the terminal end of actin.
TS EAMCET-2015
Neural Control and Coordination
284583
Specialized cells that are sensitive to vibration, pain and tension are called
1 Proprioceptors
2 Baroreceptors
3 Statoacoustic receptors
4 Frigidoreceptors
Explanation:
A Cells that are sensitive to vibration, pain and tension are called proprioceptors, these organs embedded with muscles, tendons, ligaments and joints, are responsible for sending continuously information to the brain.
MHT CET-04.10.2020 Shift-I
Neural Control and Coordination
284585
Which of the following option shows correct order of some stages of muscle contraction from the beginning to the end of the process?
1 Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Release of \(\mathrm{Ca}^{++} \rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of \(\mathrm{T}\)-system \(\rightarrow\) sliding of actin filaments.
2 Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Excitation of T-system \(\rightarrow\) Release of \(\mathrm{Ca}^{++} \rightarrow\) Cross bridges formation \(\rightarrow\) sliding of actin filaments \(\rightarrow\) ' \(\mathrm{H}\) ' band diminishes.
3 Stimuli \(\rightarrow\) Excitation of T-system \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Cross bridges Formation \(\rightarrow\) sliding of actin filaments \(\rightarrow\) ' \(\mathrm{H}\) ' band diminishes.
4 Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of T-system \(\rightarrow\) sliding of actin filament
Explanation:
B Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Excitation of T-system \(\rightarrow\) Release of \(\mathrm{Ca}^{++} \rightarrow\) Cross bridges formation \(\rightarrow\) Sliding of Actin filaments \(\rightarrow{ }^{\prime} \mathrm{H}^{\prime}\) band diminishes. During muscle contraction the myosin heads come in close contact with the thin filaments.
GUJCET-2011
Neural Control and Coordination
284587
Resting membrane potential is maintained by
1 Hormones
2 Neurotransmitters
3 Ion pumps
4 None of the above
Explanation:
C Sodium pump starts working to maintain the normal resting membrane potential by expelling \(\mathrm{Na}\) and in taking of \(\mathrm{K}^{+}\). Thus, resting membrane potential is maintained by ion pumps.
Assam CEE-2014
Neural Control and Coordination
284588
In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive :-
1 \(\mathrm{K}^{+}\)and \(\mathrm{Na}^{+}\)out of the cell
2 \(\mathrm{Na}^{+}\)into the cell
3 \(\mathrm{Na}^{+}\)out of the cell
4 \(\mathrm{K}^{+}\)into the cell
Explanation:
B In the resting state of the neural membrane, diffusion due to concentration gradients would drive \(\mathrm{K}^{+}\) into the cell. The concentration of potassium ions is higher inside the cell compared to outside, so they tend to move from areas of higher concentration to area of lower concentration. It maintain electric potential across the cell membrane.
284581
The contractile regulatory proteins that mask and unmask active sites in the sarcomere are
1 Troponin and Tropomyosin
2 Troponin and Myosin
3 Actin and Myosin
4 Tropnin-I and Troponin-C
Explanation:
A Troponin is a muscle protein of heart found in the blood which is attached with one of ends of the tropomyosin molecules. Troponin is made up of three subunits. (a)Troponin-I, (b) Troponin-T, (c) Troponin-C. - Tropomyosin is a contractile protein in the relaxed state of the muscle situated in such a way, that the active sites remain covered by the tropomysin and attached at the terminal end of actin.
TS EAMCET-2015
Neural Control and Coordination
284583
Specialized cells that are sensitive to vibration, pain and tension are called
1 Proprioceptors
2 Baroreceptors
3 Statoacoustic receptors
4 Frigidoreceptors
Explanation:
A Cells that are sensitive to vibration, pain and tension are called proprioceptors, these organs embedded with muscles, tendons, ligaments and joints, are responsible for sending continuously information to the brain.
MHT CET-04.10.2020 Shift-I
Neural Control and Coordination
284585
Which of the following option shows correct order of some stages of muscle contraction from the beginning to the end of the process?
1 Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Release of \(\mathrm{Ca}^{++} \rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of \(\mathrm{T}\)-system \(\rightarrow\) sliding of actin filaments.
2 Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Excitation of T-system \(\rightarrow\) Release of \(\mathrm{Ca}^{++} \rightarrow\) Cross bridges formation \(\rightarrow\) sliding of actin filaments \(\rightarrow\) ' \(\mathrm{H}\) ' band diminishes.
3 Stimuli \(\rightarrow\) Excitation of T-system \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Cross bridges Formation \(\rightarrow\) sliding of actin filaments \(\rightarrow\) ' \(\mathrm{H}\) ' band diminishes.
4 Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of T-system \(\rightarrow\) sliding of actin filament
Explanation:
B Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Excitation of T-system \(\rightarrow\) Release of \(\mathrm{Ca}^{++} \rightarrow\) Cross bridges formation \(\rightarrow\) Sliding of Actin filaments \(\rightarrow{ }^{\prime} \mathrm{H}^{\prime}\) band diminishes. During muscle contraction the myosin heads come in close contact with the thin filaments.
GUJCET-2011
Neural Control and Coordination
284587
Resting membrane potential is maintained by
1 Hormones
2 Neurotransmitters
3 Ion pumps
4 None of the above
Explanation:
C Sodium pump starts working to maintain the normal resting membrane potential by expelling \(\mathrm{Na}\) and in taking of \(\mathrm{K}^{+}\). Thus, resting membrane potential is maintained by ion pumps.
Assam CEE-2014
Neural Control and Coordination
284588
In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive :-
1 \(\mathrm{K}^{+}\)and \(\mathrm{Na}^{+}\)out of the cell
2 \(\mathrm{Na}^{+}\)into the cell
3 \(\mathrm{Na}^{+}\)out of the cell
4 \(\mathrm{K}^{+}\)into the cell
Explanation:
B In the resting state of the neural membrane, diffusion due to concentration gradients would drive \(\mathrm{K}^{+}\) into the cell. The concentration of potassium ions is higher inside the cell compared to outside, so they tend to move from areas of higher concentration to area of lower concentration. It maintain electric potential across the cell membrane.
284581
The contractile regulatory proteins that mask and unmask active sites in the sarcomere are
1 Troponin and Tropomyosin
2 Troponin and Myosin
3 Actin and Myosin
4 Tropnin-I and Troponin-C
Explanation:
A Troponin is a muscle protein of heart found in the blood which is attached with one of ends of the tropomyosin molecules. Troponin is made up of three subunits. (a)Troponin-I, (b) Troponin-T, (c) Troponin-C. - Tropomyosin is a contractile protein in the relaxed state of the muscle situated in such a way, that the active sites remain covered by the tropomysin and attached at the terminal end of actin.
TS EAMCET-2015
Neural Control and Coordination
284583
Specialized cells that are sensitive to vibration, pain and tension are called
1 Proprioceptors
2 Baroreceptors
3 Statoacoustic receptors
4 Frigidoreceptors
Explanation:
A Cells that are sensitive to vibration, pain and tension are called proprioceptors, these organs embedded with muscles, tendons, ligaments and joints, are responsible for sending continuously information to the brain.
MHT CET-04.10.2020 Shift-I
Neural Control and Coordination
284585
Which of the following option shows correct order of some stages of muscle contraction from the beginning to the end of the process?
1 Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Release of \(\mathrm{Ca}^{++} \rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of \(\mathrm{T}\)-system \(\rightarrow\) sliding of actin filaments.
2 Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Excitation of T-system \(\rightarrow\) Release of \(\mathrm{Ca}^{++} \rightarrow\) Cross bridges formation \(\rightarrow\) sliding of actin filaments \(\rightarrow\) ' \(\mathrm{H}\) ' band diminishes.
3 Stimuli \(\rightarrow\) Excitation of T-system \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Cross bridges Formation \(\rightarrow\) sliding of actin filaments \(\rightarrow\) ' \(\mathrm{H}\) ' band diminishes.
4 Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of T-system \(\rightarrow\) sliding of actin filament
Explanation:
B Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Excitation of T-system \(\rightarrow\) Release of \(\mathrm{Ca}^{++} \rightarrow\) Cross bridges formation \(\rightarrow\) Sliding of Actin filaments \(\rightarrow{ }^{\prime} \mathrm{H}^{\prime}\) band diminishes. During muscle contraction the myosin heads come in close contact with the thin filaments.
GUJCET-2011
Neural Control and Coordination
284587
Resting membrane potential is maintained by
1 Hormones
2 Neurotransmitters
3 Ion pumps
4 None of the above
Explanation:
C Sodium pump starts working to maintain the normal resting membrane potential by expelling \(\mathrm{Na}\) and in taking of \(\mathrm{K}^{+}\). Thus, resting membrane potential is maintained by ion pumps.
Assam CEE-2014
Neural Control and Coordination
284588
In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive :-
1 \(\mathrm{K}^{+}\)and \(\mathrm{Na}^{+}\)out of the cell
2 \(\mathrm{Na}^{+}\)into the cell
3 \(\mathrm{Na}^{+}\)out of the cell
4 \(\mathrm{K}^{+}\)into the cell
Explanation:
B In the resting state of the neural membrane, diffusion due to concentration gradients would drive \(\mathrm{K}^{+}\) into the cell. The concentration of potassium ions is higher inside the cell compared to outside, so they tend to move from areas of higher concentration to area of lower concentration. It maintain electric potential across the cell membrane.
284581
The contractile regulatory proteins that mask and unmask active sites in the sarcomere are
1 Troponin and Tropomyosin
2 Troponin and Myosin
3 Actin and Myosin
4 Tropnin-I and Troponin-C
Explanation:
A Troponin is a muscle protein of heart found in the blood which is attached with one of ends of the tropomyosin molecules. Troponin is made up of three subunits. (a)Troponin-I, (b) Troponin-T, (c) Troponin-C. - Tropomyosin is a contractile protein in the relaxed state of the muscle situated in such a way, that the active sites remain covered by the tropomysin and attached at the terminal end of actin.
TS EAMCET-2015
Neural Control and Coordination
284583
Specialized cells that are sensitive to vibration, pain and tension are called
1 Proprioceptors
2 Baroreceptors
3 Statoacoustic receptors
4 Frigidoreceptors
Explanation:
A Cells that are sensitive to vibration, pain and tension are called proprioceptors, these organs embedded with muscles, tendons, ligaments and joints, are responsible for sending continuously information to the brain.
MHT CET-04.10.2020 Shift-I
Neural Control and Coordination
284585
Which of the following option shows correct order of some stages of muscle contraction from the beginning to the end of the process?
1 Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Release of \(\mathrm{Ca}^{++} \rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of \(\mathrm{T}\)-system \(\rightarrow\) sliding of actin filaments.
2 Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Excitation of T-system \(\rightarrow\) Release of \(\mathrm{Ca}^{++} \rightarrow\) Cross bridges formation \(\rightarrow\) sliding of actin filaments \(\rightarrow\) ' \(\mathrm{H}\) ' band diminishes.
3 Stimuli \(\rightarrow\) Excitation of T-system \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Cross bridges Formation \(\rightarrow\) sliding of actin filaments \(\rightarrow\) ' \(\mathrm{H}\) ' band diminishes.
4 Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Cross bridges formation \(\rightarrow\) Excitation of T-system \(\rightarrow\) sliding of actin filament
Explanation:
B Stimuli \(\rightarrow\) Neurotransmitter secretion \(\rightarrow\) Excitation of T-system \(\rightarrow\) Release of \(\mathrm{Ca}^{++} \rightarrow\) Cross bridges formation \(\rightarrow\) Sliding of Actin filaments \(\rightarrow{ }^{\prime} \mathrm{H}^{\prime}\) band diminishes. During muscle contraction the myosin heads come in close contact with the thin filaments.
GUJCET-2011
Neural Control and Coordination
284587
Resting membrane potential is maintained by
1 Hormones
2 Neurotransmitters
3 Ion pumps
4 None of the above
Explanation:
C Sodium pump starts working to maintain the normal resting membrane potential by expelling \(\mathrm{Na}\) and in taking of \(\mathrm{K}^{+}\). Thus, resting membrane potential is maintained by ion pumps.
Assam CEE-2014
Neural Control and Coordination
284588
In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive :-
1 \(\mathrm{K}^{+}\)and \(\mathrm{Na}^{+}\)out of the cell
2 \(\mathrm{Na}^{+}\)into the cell
3 \(\mathrm{Na}^{+}\)out of the cell
4 \(\mathrm{K}^{+}\)into the cell
Explanation:
B In the resting state of the neural membrane, diffusion due to concentration gradients would drive \(\mathrm{K}^{+}\) into the cell. The concentration of potassium ions is higher inside the cell compared to outside, so they tend to move from areas of higher concentration to area of lower concentration. It maintain electric potential across the cell membrane.
