340028
Chemical ions responsible for muscle contraction are
1 \(\mathrm{Na}^{+}\)and \(\mathrm{Ca}^{2+}\)
2 \(\mathrm{Na}^{+}\)and \(\mathrm{K}^{+}\)
3 \(\mathrm{Ca}^{2+}\) and \(\mathrm{K}^{+}\)
4 \(\mathrm{Ca}^{2+}\) and \(\mathrm{Mg}^{2+}\)
Explanation:
Calcium ions play a significant role in muscle contraction. These activate the interaction of myosin and actin, through the intervention of tropomyosin and troponin. Magnesium, in muscle contraction, stimulates calcium re-uptake by the calcium-activated ATPase of the sarcoplasmic reticulum. It also affects the translocation of calcium ions through the smooth muscle cell membrane.
BIOXI20: LOCOMOTION AND MOVEMENT
340029
During strenuous exercise, glucose is converted into
1 Lactic acid
2 Pyruvic acid
3 Starch
4 Glycogen
Explanation:
Repeated activation of the muscle can lead to the accumulation of lactic acid due to anaerobic breakdown of glycogen in them, causing fatigue.
BIOXI20: LOCOMOTION AND MOVEMENT
340030
Which is correct between white and red muscles fibre?
1 White muscle fibre- Less myoglobin
2 White muscle fibre- Number of mitochondria is more
3 Red muscles fibre - Amount of sarcoplasmic reticulum is high
4 Aerobic muscle is white muscle fibre
Explanation:
White muscle fibres have less myoglobin as compared to red muscle fibre.
BIOXI20: LOCOMOTION AND MOVEMENT
340031
Sliding filament theory can be best explained as
1 Actin and myosin filaments do not shorten but rather slide pass each other.
2 When myofilaments slide pass each other, myosin filaments shorten while actin filaments do not shorten.
3 When myofilaments slide pass each other actin filaments shorten while myosin filaments do not shorten.
4 Actin and myosin filaments shorten and slide pass each other.
Explanation:
The sliding filament theory states that contraction of a muscle fibre takes place by the sliding of the thin filaments over the thick filaments. Neither thick nor thin filaments shorten.
340028
Chemical ions responsible for muscle contraction are
1 \(\mathrm{Na}^{+}\)and \(\mathrm{Ca}^{2+}\)
2 \(\mathrm{Na}^{+}\)and \(\mathrm{K}^{+}\)
3 \(\mathrm{Ca}^{2+}\) and \(\mathrm{K}^{+}\)
4 \(\mathrm{Ca}^{2+}\) and \(\mathrm{Mg}^{2+}\)
Explanation:
Calcium ions play a significant role in muscle contraction. These activate the interaction of myosin and actin, through the intervention of tropomyosin and troponin. Magnesium, in muscle contraction, stimulates calcium re-uptake by the calcium-activated ATPase of the sarcoplasmic reticulum. It also affects the translocation of calcium ions through the smooth muscle cell membrane.
BIOXI20: LOCOMOTION AND MOVEMENT
340029
During strenuous exercise, glucose is converted into
1 Lactic acid
2 Pyruvic acid
3 Starch
4 Glycogen
Explanation:
Repeated activation of the muscle can lead to the accumulation of lactic acid due to anaerobic breakdown of glycogen in them, causing fatigue.
BIOXI20: LOCOMOTION AND MOVEMENT
340030
Which is correct between white and red muscles fibre?
1 White muscle fibre- Less myoglobin
2 White muscle fibre- Number of mitochondria is more
3 Red muscles fibre - Amount of sarcoplasmic reticulum is high
4 Aerobic muscle is white muscle fibre
Explanation:
White muscle fibres have less myoglobin as compared to red muscle fibre.
BIOXI20: LOCOMOTION AND MOVEMENT
340031
Sliding filament theory can be best explained as
1 Actin and myosin filaments do not shorten but rather slide pass each other.
2 When myofilaments slide pass each other, myosin filaments shorten while actin filaments do not shorten.
3 When myofilaments slide pass each other actin filaments shorten while myosin filaments do not shorten.
4 Actin and myosin filaments shorten and slide pass each other.
Explanation:
The sliding filament theory states that contraction of a muscle fibre takes place by the sliding of the thin filaments over the thick filaments. Neither thick nor thin filaments shorten.
340028
Chemical ions responsible for muscle contraction are
1 \(\mathrm{Na}^{+}\)and \(\mathrm{Ca}^{2+}\)
2 \(\mathrm{Na}^{+}\)and \(\mathrm{K}^{+}\)
3 \(\mathrm{Ca}^{2+}\) and \(\mathrm{K}^{+}\)
4 \(\mathrm{Ca}^{2+}\) and \(\mathrm{Mg}^{2+}\)
Explanation:
Calcium ions play a significant role in muscle contraction. These activate the interaction of myosin and actin, through the intervention of tropomyosin and troponin. Magnesium, in muscle contraction, stimulates calcium re-uptake by the calcium-activated ATPase of the sarcoplasmic reticulum. It also affects the translocation of calcium ions through the smooth muscle cell membrane.
BIOXI20: LOCOMOTION AND MOVEMENT
340029
During strenuous exercise, glucose is converted into
1 Lactic acid
2 Pyruvic acid
3 Starch
4 Glycogen
Explanation:
Repeated activation of the muscle can lead to the accumulation of lactic acid due to anaerobic breakdown of glycogen in them, causing fatigue.
BIOXI20: LOCOMOTION AND MOVEMENT
340030
Which is correct between white and red muscles fibre?
1 White muscle fibre- Less myoglobin
2 White muscle fibre- Number of mitochondria is more
3 Red muscles fibre - Amount of sarcoplasmic reticulum is high
4 Aerobic muscle is white muscle fibre
Explanation:
White muscle fibres have less myoglobin as compared to red muscle fibre.
BIOXI20: LOCOMOTION AND MOVEMENT
340031
Sliding filament theory can be best explained as
1 Actin and myosin filaments do not shorten but rather slide pass each other.
2 When myofilaments slide pass each other, myosin filaments shorten while actin filaments do not shorten.
3 When myofilaments slide pass each other actin filaments shorten while myosin filaments do not shorten.
4 Actin and myosin filaments shorten and slide pass each other.
Explanation:
The sliding filament theory states that contraction of a muscle fibre takes place by the sliding of the thin filaments over the thick filaments. Neither thick nor thin filaments shorten.
340028
Chemical ions responsible for muscle contraction are
1 \(\mathrm{Na}^{+}\)and \(\mathrm{Ca}^{2+}\)
2 \(\mathrm{Na}^{+}\)and \(\mathrm{K}^{+}\)
3 \(\mathrm{Ca}^{2+}\) and \(\mathrm{K}^{+}\)
4 \(\mathrm{Ca}^{2+}\) and \(\mathrm{Mg}^{2+}\)
Explanation:
Calcium ions play a significant role in muscle contraction. These activate the interaction of myosin and actin, through the intervention of tropomyosin and troponin. Magnesium, in muscle contraction, stimulates calcium re-uptake by the calcium-activated ATPase of the sarcoplasmic reticulum. It also affects the translocation of calcium ions through the smooth muscle cell membrane.
BIOXI20: LOCOMOTION AND MOVEMENT
340029
During strenuous exercise, glucose is converted into
1 Lactic acid
2 Pyruvic acid
3 Starch
4 Glycogen
Explanation:
Repeated activation of the muscle can lead to the accumulation of lactic acid due to anaerobic breakdown of glycogen in them, causing fatigue.
BIOXI20: LOCOMOTION AND MOVEMENT
340030
Which is correct between white and red muscles fibre?
1 White muscle fibre- Less myoglobin
2 White muscle fibre- Number of mitochondria is more
3 Red muscles fibre - Amount of sarcoplasmic reticulum is high
4 Aerobic muscle is white muscle fibre
Explanation:
White muscle fibres have less myoglobin as compared to red muscle fibre.
BIOXI20: LOCOMOTION AND MOVEMENT
340031
Sliding filament theory can be best explained as
1 Actin and myosin filaments do not shorten but rather slide pass each other.
2 When myofilaments slide pass each other, myosin filaments shorten while actin filaments do not shorten.
3 When myofilaments slide pass each other actin filaments shorten while myosin filaments do not shorten.
4 Actin and myosin filaments shorten and slide pass each other.
Explanation:
The sliding filament theory states that contraction of a muscle fibre takes place by the sliding of the thin filaments over the thick filaments. Neither thick nor thin filaments shorten.
