238250
Actin and myosin proteins are related with:
1 \(\mathrm{Na}^{+}\)and \(\mathrm{K}^{+}\)pump
2 muscle contraction
3 nervous system-
4 excretion of water products
Explanation:
Actin and myosin proteins are related to muscle contraction. - Actin and myosin are the primary proteins involved in the mechanism of muscle contraction, they are both found in muscle fibers and work together to generate force and produce movement. - Actin is a globular protein that forms thin filaments in the muscle fiber. Myosin is a motor protein form thick filaments during muscle contraction myosin heads bind to actin filaments forming cross-bridges. ATP hydrolysis allows the myosin heads to undergo a series of conformational changes causing the actin filaments to slide post the myosin filaments this sliding filament mechanism generated force and shortens the muscle fiber resulting in muscle contraction.
BVP-2001
Locomotion and Movement
238251
The 'thick' filament in muscles are polymerized proteins of
1 meromyosins
2 actins
3 troponins
4 tropomyosins
5 keratin
Explanation:
Exp. A The 'thick' filament in muscles are polymerized protein of meromyosins. Meromyosins are a type of protein that makes up the thick filaments in muscle fibers. These filaments primarily consist of the protein myosin. Myosin molecules are long, fibrous proteins that have globular head region and a tail region. The heads of myosin interact with the thin filaments (composed of actin) during muscle contraction, forming cross-bridges and generating force. Tropomyosins and troponins are associated with the thin filaments and play regulatory roles in muscle contraction.
Kerala PMT-2012
Locomotion and Movement
238252
Choose the correct statements:
1 (A), (B) and (D) only
2 (B), (C) and (E) only
3 (A), (C) and (D) only
4 (A), (B) and (E) only
5 Tendons attach one bone to another. Choose the most appropriate answer from the options given below:
Explanation:
Exp. A Bone have a hard and non-pliable ground substance rich in calcium salt and collagen fibres which give bone its strength. - It is main tissue that provides structural frame to the body. - Limb bones, such as the long bone of the legs, serve weight-bearing functions. - Adipose tissue is a another type of loses connective tissue located mainly beneath the skin. The cells of this tissue are specialized to store fat.
NEET (Re-Exam)-04.09.2022
Locomotion and Movement
238253
Choose the correct statement about a muscular tissue:
1 Skeletal muscle fibers are uninucleated and found in parallel bundles.
2 Intercalated discs allow the cardiac muscle cells to contract as a unit.
3 The walls of blood vessels are made up of columnar epithelium
4 Smooth muscles are multinucleated and involuntary.
Explanation:
Communication Junction (intercalated disc) at some fusion points allows the cell to contract as a unit. i.e. - When one cell relieves a signal to confront its neighbour are also stimulated to contract. - In cardiac muscles of heart connections between neighboring cell are formed by intercalated disc.
238250
Actin and myosin proteins are related with:
1 \(\mathrm{Na}^{+}\)and \(\mathrm{K}^{+}\)pump
2 muscle contraction
3 nervous system-
4 excretion of water products
Explanation:
Actin and myosin proteins are related to muscle contraction. - Actin and myosin are the primary proteins involved in the mechanism of muscle contraction, they are both found in muscle fibers and work together to generate force and produce movement. - Actin is a globular protein that forms thin filaments in the muscle fiber. Myosin is a motor protein form thick filaments during muscle contraction myosin heads bind to actin filaments forming cross-bridges. ATP hydrolysis allows the myosin heads to undergo a series of conformational changes causing the actin filaments to slide post the myosin filaments this sliding filament mechanism generated force and shortens the muscle fiber resulting in muscle contraction.
BVP-2001
Locomotion and Movement
238251
The 'thick' filament in muscles are polymerized proteins of
1 meromyosins
2 actins
3 troponins
4 tropomyosins
5 keratin
Explanation:
Exp. A The 'thick' filament in muscles are polymerized protein of meromyosins. Meromyosins are a type of protein that makes up the thick filaments in muscle fibers. These filaments primarily consist of the protein myosin. Myosin molecules are long, fibrous proteins that have globular head region and a tail region. The heads of myosin interact with the thin filaments (composed of actin) during muscle contraction, forming cross-bridges and generating force. Tropomyosins and troponins are associated with the thin filaments and play regulatory roles in muscle contraction.
Kerala PMT-2012
Locomotion and Movement
238252
Choose the correct statements:
1 (A), (B) and (D) only
2 (B), (C) and (E) only
3 (A), (C) and (D) only
4 (A), (B) and (E) only
5 Tendons attach one bone to another. Choose the most appropriate answer from the options given below:
Explanation:
Exp. A Bone have a hard and non-pliable ground substance rich in calcium salt and collagen fibres which give bone its strength. - It is main tissue that provides structural frame to the body. - Limb bones, such as the long bone of the legs, serve weight-bearing functions. - Adipose tissue is a another type of loses connective tissue located mainly beneath the skin. The cells of this tissue are specialized to store fat.
NEET (Re-Exam)-04.09.2022
Locomotion and Movement
238253
Choose the correct statement about a muscular tissue:
1 Skeletal muscle fibers are uninucleated and found in parallel bundles.
2 Intercalated discs allow the cardiac muscle cells to contract as a unit.
3 The walls of blood vessels are made up of columnar epithelium
4 Smooth muscles are multinucleated and involuntary.
Explanation:
Communication Junction (intercalated disc) at some fusion points allows the cell to contract as a unit. i.e. - When one cell relieves a signal to confront its neighbour are also stimulated to contract. - In cardiac muscles of heart connections between neighboring cell are formed by intercalated disc.
238250
Actin and myosin proteins are related with:
1 \(\mathrm{Na}^{+}\)and \(\mathrm{K}^{+}\)pump
2 muscle contraction
3 nervous system-
4 excretion of water products
Explanation:
Actin and myosin proteins are related to muscle contraction. - Actin and myosin are the primary proteins involved in the mechanism of muscle contraction, they are both found in muscle fibers and work together to generate force and produce movement. - Actin is a globular protein that forms thin filaments in the muscle fiber. Myosin is a motor protein form thick filaments during muscle contraction myosin heads bind to actin filaments forming cross-bridges. ATP hydrolysis allows the myosin heads to undergo a series of conformational changes causing the actin filaments to slide post the myosin filaments this sliding filament mechanism generated force and shortens the muscle fiber resulting in muscle contraction.
BVP-2001
Locomotion and Movement
238251
The 'thick' filament in muscles are polymerized proteins of
1 meromyosins
2 actins
3 troponins
4 tropomyosins
5 keratin
Explanation:
Exp. A The 'thick' filament in muscles are polymerized protein of meromyosins. Meromyosins are a type of protein that makes up the thick filaments in muscle fibers. These filaments primarily consist of the protein myosin. Myosin molecules are long, fibrous proteins that have globular head region and a tail region. The heads of myosin interact with the thin filaments (composed of actin) during muscle contraction, forming cross-bridges and generating force. Tropomyosins and troponins are associated with the thin filaments and play regulatory roles in muscle contraction.
Kerala PMT-2012
Locomotion and Movement
238252
Choose the correct statements:
1 (A), (B) and (D) only
2 (B), (C) and (E) only
3 (A), (C) and (D) only
4 (A), (B) and (E) only
5 Tendons attach one bone to another. Choose the most appropriate answer from the options given below:
Explanation:
Exp. A Bone have a hard and non-pliable ground substance rich in calcium salt and collagen fibres which give bone its strength. - It is main tissue that provides structural frame to the body. - Limb bones, such as the long bone of the legs, serve weight-bearing functions. - Adipose tissue is a another type of loses connective tissue located mainly beneath the skin. The cells of this tissue are specialized to store fat.
NEET (Re-Exam)-04.09.2022
Locomotion and Movement
238253
Choose the correct statement about a muscular tissue:
1 Skeletal muscle fibers are uninucleated and found in parallel bundles.
2 Intercalated discs allow the cardiac muscle cells to contract as a unit.
3 The walls of blood vessels are made up of columnar epithelium
4 Smooth muscles are multinucleated and involuntary.
Explanation:
Communication Junction (intercalated disc) at some fusion points allows the cell to contract as a unit. i.e. - When one cell relieves a signal to confront its neighbour are also stimulated to contract. - In cardiac muscles of heart connections between neighboring cell are formed by intercalated disc.
238250
Actin and myosin proteins are related with:
1 \(\mathrm{Na}^{+}\)and \(\mathrm{K}^{+}\)pump
2 muscle contraction
3 nervous system-
4 excretion of water products
Explanation:
Actin and myosin proteins are related to muscle contraction. - Actin and myosin are the primary proteins involved in the mechanism of muscle contraction, they are both found in muscle fibers and work together to generate force and produce movement. - Actin is a globular protein that forms thin filaments in the muscle fiber. Myosin is a motor protein form thick filaments during muscle contraction myosin heads bind to actin filaments forming cross-bridges. ATP hydrolysis allows the myosin heads to undergo a series of conformational changes causing the actin filaments to slide post the myosin filaments this sliding filament mechanism generated force and shortens the muscle fiber resulting in muscle contraction.
BVP-2001
Locomotion and Movement
238251
The 'thick' filament in muscles are polymerized proteins of
1 meromyosins
2 actins
3 troponins
4 tropomyosins
5 keratin
Explanation:
Exp. A The 'thick' filament in muscles are polymerized protein of meromyosins. Meromyosins are a type of protein that makes up the thick filaments in muscle fibers. These filaments primarily consist of the protein myosin. Myosin molecules are long, fibrous proteins that have globular head region and a tail region. The heads of myosin interact with the thin filaments (composed of actin) during muscle contraction, forming cross-bridges and generating force. Tropomyosins and troponins are associated with the thin filaments and play regulatory roles in muscle contraction.
Kerala PMT-2012
Locomotion and Movement
238252
Choose the correct statements:
1 (A), (B) and (D) only
2 (B), (C) and (E) only
3 (A), (C) and (D) only
4 (A), (B) and (E) only
5 Tendons attach one bone to another. Choose the most appropriate answer from the options given below:
Explanation:
Exp. A Bone have a hard and non-pliable ground substance rich in calcium salt and collagen fibres which give bone its strength. - It is main tissue that provides structural frame to the body. - Limb bones, such as the long bone of the legs, serve weight-bearing functions. - Adipose tissue is a another type of loses connective tissue located mainly beneath the skin. The cells of this tissue are specialized to store fat.
NEET (Re-Exam)-04.09.2022
Locomotion and Movement
238253
Choose the correct statement about a muscular tissue:
1 Skeletal muscle fibers are uninucleated and found in parallel bundles.
2 Intercalated discs allow the cardiac muscle cells to contract as a unit.
3 The walls of blood vessels are made up of columnar epithelium
4 Smooth muscles are multinucleated and involuntary.
Explanation:
Communication Junction (intercalated disc) at some fusion points allows the cell to contract as a unit. i.e. - When one cell relieves a signal to confront its neighbour are also stimulated to contract. - In cardiac muscles of heart connections between neighboring cell are formed by intercalated disc.
