Gases enter and leave the blood during respiration primarily by (c) Diffusion and active circulation. Diffusion allows for the passive movement of gases like oxygen and carbon dioxide across the thin membranes of the alveoli in the lungs and the capillaries surrounding them. Meanwhile, active circulRead more
Gases enter and leave the blood during respiration primarily by (c) Diffusion and active circulation. Diffusion allows for the passive movement of gases like oxygen and carbon dioxide across the thin membranes of the alveoli in the lungs and the capillaries surrounding them. Meanwhile, active circulation, driven by the pumping action of the heart, facilitates the transport of oxygen-rich blood from the lungs to the body tissues and the return of carbon dioxide-rich blood from the tissues back to the lungs for exchange, ensuring a continuous supply of oxygen and removal of carbon dioxide.
The number of essential amino acids in the human body is (b) 20. These amino acids are crucial for various physiological processes, including protein synthesis, enzyme function, and tissue repair. They cannot be synthesized by the body and must be obtained through dietary sources. Essential amino acRead more
The number of essential amino acids in the human body is (b) 20. These amino acids are crucial for various physiological processes, including protein synthesis, enzyme function, and tissue repair. They cannot be synthesized by the body and must be obtained through dietary sources. Essential amino acids include histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine, along with arginine (essential in children), and the semi-essential amino acids cysteine, tyrosine, glycine, proline, serine, asparagine, glutamine, and alanine. Ensuring an adequate intake of these amino acids is essential for maintaining optimal health and well-being.
The metal present in myoglobin is (d) Iron. Myoglobin is a protein primarily found in muscle tissues, particularly in skeletal and cardiac muscles. It plays a crucial role in oxygen storage and transport within muscle cells. Each myoglobin molecule contains a single iron ion (Fe2+) at its core, whicRead more
The metal present in myoglobin is (d) Iron. Myoglobin is a protein primarily found in muscle tissues, particularly in skeletal and cardiac muscles. It plays a crucial role in oxygen storage and transport within muscle cells. Each myoglobin molecule contains a single iron ion (Fe2+) at its core, which binds reversibly to oxygen molecules, facilitating their storage and release as needed during muscle contraction and metabolic activities. This iron ion is essential for the protein’s function, enabling it to efficiently capture oxygen from the bloodstream when oxygen levels are high and release it when oxygen demand increases during muscle activity. Without this iron ion, myoglobin would not be able to perform its vital role in supplying oxygen to muscle tissues, which is essential for energy production and overall muscle function.
Prothrombin is related to (b) Blood coagulation. It is a vital component in the process of clot formation, known as hemostasis. When blood vessels are injured, prothrombin is converted into thrombin through a series of enzymatic reactions, leading to the formation of a fibrin clot. This clotting mecRead more
Prothrombin is related to (b) Blood coagulation. It is a vital component in the process of clot formation, known as hemostasis. When blood vessels are injured, prothrombin is converted into thrombin through a series of enzymatic reactions, leading to the formation of a fibrin clot. This clotting mechanism helps to prevent excessive bleeding by sealing off damaged blood vessels. Without prothrombin and the subsequent clotting process, individuals would be at risk of hemorrhage even from minor injuries, highlighting the critical role of prothrombin in maintaining vascular integrity and overall hemostasis.
The function not associated with the human kidney is (b) Control of sugar level in blood. While the kidneys play essential roles in regulating water balance, filtering waste products like urea, and secreting various hormones involved in blood pressure regulation and red blood cell production, they aRead more
The function not associated with the human kidney is (b) Control of sugar level in blood. While the kidneys play essential roles in regulating water balance, filtering waste products like urea, and secreting various hormones involved in blood pressure regulation and red blood cell production, they are not directly involved in controlling blood sugar levels. This function primarily falls under the purview of the pancreas, which secretes hormones such as insulin and glucagon to regulate glucose metabolism. Therefore, while the kidney performs numerous vital functions, controlling blood sugar levels is not among its primary responsibilities.
Tendon connects (b) Muscle to bone. Tendons are fibrous connective tissues that serve to anchor muscles to bones, facilitating movement. When a muscle contracts, it pulls on the tendon, which in turn pulls on the bone, causing movement at the joint. This arrangement allows for efficient transmissionRead more
Tendon connects (b) Muscle to bone. Tendons are fibrous connective tissues that serve to anchor muscles to bones, facilitating movement. When a muscle contracts, it pulls on the tendon, which in turn pulls on the bone, causing movement at the joint. This arrangement allows for efficient transmission of force generated by muscle contraction to the skeleton, enabling activities such as walking, running, and lifting. Tendons are composed of densely packed collagen fibers, providing strength and stability to withstand the forces exerted during movement while maintaining the integrity of the muscle-bone connection.
The gland in the human body related to the stimulation of the body is (d) Pituitary gland. Often referred to as the "master gland," the pituitary gland secretes several hormones that control other endocrine glands throughout the body. These hormones regulate growth, metabolism, reproduction, and strRead more
The gland in the human body related to the stimulation of the body is (d) Pituitary gland. Often referred to as the “master gland,” the pituitary gland secretes several hormones that control other endocrine glands throughout the body. These hormones regulate growth, metabolism, reproduction, and stress responses. Additionally, the pituitary gland produces hormones that stimulate the production of thyroid hormones, adrenal hormones, and sex hormones. Overall, the pituitary gland plays a crucial role in coordinating and regulating various physiological processes, ensuring the body’s proper functioning and response to internal and external stimuli.
The part of a man's throat referred to as Adam's apple is (b) Thyroid cartilage. It's a noticeable protrusion at the front of the neck, formed by the largest cartilage of the larynx, known as the thyroid cartilage. During puberty, the larynx enlarges in males, causing the thyroid cartilage to grow,Read more
The part of a man’s throat referred to as Adam’s apple is (b) Thyroid cartilage. It’s a noticeable protrusion at the front of the neck, formed by the largest cartilage of the larynx, known as the thyroid cartilage. During puberty, the larynx enlarges in males, causing the thyroid cartilage to grow, resulting in the prominence known as the Adam’s apple. This structure serves to protect the vocal cords and aids in voice production. While both men and women have thyroid cartilage, it’s typically more prominent in men due to hormonal influences during puberty, hence the colloquial term “Adam’s apple.”
The longest bone in the human body is (c) Femur. Extending from the hip to the knee, the femur is renowned for its length and strength. It plays a crucial role in supporting body weight and facilitating movement, such as walking, running, and jumping. Additionally, the femur serves as an attachmentRead more
The longest bone in the human body is (c) Femur. Extending from the hip to the knee, the femur is renowned for its length and strength. It plays a crucial role in supporting body weight and facilitating movement, such as walking, running, and jumping. Additionally, the femur serves as an attachment site for various muscles involved in lower limb movement and stability. Its robust structure and strategic positioning contribute to its vital function in maintaining posture, balance, and overall mobility, making it one of the most essential bones in the human skeletal system.
Mainly due to its presence, the human body remains without crushing even under high atmospheric pressure is (a) Strong skeletal system. The skeletal system provides essential structural support to the body, consisting of bones, cartilage, ligaments, and tendons. It forms a sturdy framework that distRead more
Mainly due to its presence, the human body remains without crushing even under high atmospheric pressure is (a) Strong skeletal system. The skeletal system provides essential structural support to the body, consisting of bones, cartilage, ligaments, and tendons. It forms a sturdy framework that distributes the body’s weight and withstands external forces. Without a strong skeletal system, the body would collapse under pressure, leading to severe injuries or even death. Additionally, bones protect vital organs, such as the brain, heart, and lungs, from damage. The skeletal system also serves as attachment points for muscles, allowing movement and locomotion. While other factors like fluid in cells, strong will, and firm muscular structure contribute to overall body function, it is primarily the strong skeletal system that prevents the body from crushing under high atmospheric pressure, ensuring structural integrity and survival.
By which process do gases enter the blood and then leave it during respiration?
Gases enter and leave the blood during respiration primarily by (c) Diffusion and active circulation. Diffusion allows for the passive movement of gases like oxygen and carbon dioxide across the thin membranes of the alveoli in the lungs and the capillaries surrounding them. Meanwhile, active circulRead more
Gases enter and leave the blood during respiration primarily by (c) Diffusion and active circulation. Diffusion allows for the passive movement of gases like oxygen and carbon dioxide across the thin membranes of the alveoli in the lungs and the capillaries surrounding them. Meanwhile, active circulation, driven by the pumping action of the heart, facilitates the transport of oxygen-rich blood from the lungs to the body tissues and the return of carbon dioxide-rich blood from the tissues back to the lungs for exchange, ensuring a continuous supply of oxygen and removal of carbon dioxide.
See lessThe number of essential amino acids in the human body is
The number of essential amino acids in the human body is (b) 20. These amino acids are crucial for various physiological processes, including protein synthesis, enzyme function, and tissue repair. They cannot be synthesized by the body and must be obtained through dietary sources. Essential amino acRead more
The number of essential amino acids in the human body is (b) 20. These amino acids are crucial for various physiological processes, including protein synthesis, enzyme function, and tissue repair. They cannot be synthesized by the body and must be obtained through dietary sources. Essential amino acids include histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine, along with arginine (essential in children), and the semi-essential amino acids cysteine, tyrosine, glycine, proline, serine, asparagine, glutamine, and alanine. Ensuring an adequate intake of these amino acids is essential for maintaining optimal health and well-being.
See lessWhich metal is present in myoglobin?
The metal present in myoglobin is (d) Iron. Myoglobin is a protein primarily found in muscle tissues, particularly in skeletal and cardiac muscles. It plays a crucial role in oxygen storage and transport within muscle cells. Each myoglobin molecule contains a single iron ion (Fe2+) at its core, whicRead more
The metal present in myoglobin is (d) Iron. Myoglobin is a protein primarily found in muscle tissues, particularly in skeletal and cardiac muscles. It plays a crucial role in oxygen storage and transport within muscle cells. Each myoglobin molecule contains a single iron ion (Fe2+) at its core, which binds reversibly to oxygen molecules, facilitating their storage and release as needed during muscle contraction and metabolic activities. This iron ion is essential for the protein’s function, enabling it to efficiently capture oxygen from the bloodstream when oxygen levels are high and release it when oxygen demand increases during muscle activity. Without this iron ion, myoglobin would not be able to perform its vital role in supplying oxygen to muscle tissues, which is essential for energy production and overall muscle function.
See lessWith which physiological process is prothrombin related?
Prothrombin is related to (b) Blood coagulation. It is a vital component in the process of clot formation, known as hemostasis. When blood vessels are injured, prothrombin is converted into thrombin through a series of enzymatic reactions, leading to the formation of a fibrin clot. This clotting mecRead more
Prothrombin is related to (b) Blood coagulation. It is a vital component in the process of clot formation, known as hemostasis. When blood vessels are injured, prothrombin is converted into thrombin through a series of enzymatic reactions, leading to the formation of a fibrin clot. This clotting mechanism helps to prevent excessive bleeding by sealing off damaged blood vessels. Without prothrombin and the subsequent clotting process, individuals would be at risk of hemorrhage even from minor injuries, highlighting the critical role of prothrombin in maintaining vascular integrity and overall hemostasis.
See lessWhich of the following is not a normal function of human kidney?
The function not associated with the human kidney is (b) Control of sugar level in blood. While the kidneys play essential roles in regulating water balance, filtering waste products like urea, and secreting various hormones involved in blood pressure regulation and red blood cell production, they aRead more
The function not associated with the human kidney is (b) Control of sugar level in blood. While the kidneys play essential roles in regulating water balance, filtering waste products like urea, and secreting various hormones involved in blood pressure regulation and red blood cell production, they are not directly involved in controlling blood sugar levels. This function primarily falls under the purview of the pancreas, which secretes hormones such as insulin and glucagon to regulate glucose metabolism. Therefore, while the kidney performs numerous vital functions, controlling blood sugar levels is not among its primary responsibilities.
See lessTendon connects
Tendon connects (b) Muscle to bone. Tendons are fibrous connective tissues that serve to anchor muscles to bones, facilitating movement. When a muscle contracts, it pulls on the tendon, which in turn pulls on the bone, causing movement at the joint. This arrangement allows for efficient transmissionRead more
Tendon connects (b) Muscle to bone. Tendons are fibrous connective tissues that serve to anchor muscles to bones, facilitating movement. When a muscle contracts, it pulls on the tendon, which in turn pulls on the bone, causing movement at the joint. This arrangement allows for efficient transmission of force generated by muscle contraction to the skeleton, enabling activities such as walking, running, and lifting. Tendons are composed of densely packed collagen fibers, providing strength and stability to withstand the forces exerted during movement while maintaining the integrity of the muscle-bone connection.
See lessWhich gland in the human body is related to the stimulation of the body?
The gland in the human body related to the stimulation of the body is (d) Pituitary gland. Often referred to as the "master gland," the pituitary gland secretes several hormones that control other endocrine glands throughout the body. These hormones regulate growth, metabolism, reproduction, and strRead more
The gland in the human body related to the stimulation of the body is (d) Pituitary gland. Often referred to as the “master gland,” the pituitary gland secretes several hormones that control other endocrine glands throughout the body. These hormones regulate growth, metabolism, reproduction, and stress responses. Additionally, the pituitary gland produces hormones that stimulate the production of thyroid hormones, adrenal hormones, and sex hormones. Overall, the pituitary gland plays a crucial role in coordinating and regulating various physiological processes, ensuring the body’s proper functioning and response to internal and external stimuli.
See lessWhich part of a man’s throat is called Adam’s apple?
The part of a man's throat referred to as Adam's apple is (b) Thyroid cartilage. It's a noticeable protrusion at the front of the neck, formed by the largest cartilage of the larynx, known as the thyroid cartilage. During puberty, the larynx enlarges in males, causing the thyroid cartilage to grow,Read more
The part of a man’s throat referred to as Adam’s apple is (b) Thyroid cartilage. It’s a noticeable protrusion at the front of the neck, formed by the largest cartilage of the larynx, known as the thyroid cartilage. During puberty, the larynx enlarges in males, causing the thyroid cartilage to grow, resulting in the prominence known as the Adam’s apple. This structure serves to protect the vocal cords and aids in voice production. While both men and women have thyroid cartilage, it’s typically more prominent in men due to hormonal influences during puberty, hence the colloquial term “Adam’s apple.”
See lessThe longest bone in the human body is
The longest bone in the human body is (c) Femur. Extending from the hip to the knee, the femur is renowned for its length and strength. It plays a crucial role in supporting body weight and facilitating movement, such as walking, running, and jumping. Additionally, the femur serves as an attachmentRead more
The longest bone in the human body is (c) Femur. Extending from the hip to the knee, the femur is renowned for its length and strength. It plays a crucial role in supporting body weight and facilitating movement, such as walking, running, and jumping. Additionally, the femur serves as an attachment site for various muscles involved in lower limb movement and stability. Its robust structure and strategic positioning contribute to its vital function in maintaining posture, balance, and overall mobility, making it one of the most essential bones in the human skeletal system.
See lessMainly due to its presence the human body remains without crushing even under high atmospheric pressure?
Mainly due to its presence, the human body remains without crushing even under high atmospheric pressure is (a) Strong skeletal system. The skeletal system provides essential structural support to the body, consisting of bones, cartilage, ligaments, and tendons. It forms a sturdy framework that distRead more
Mainly due to its presence, the human body remains without crushing even under high atmospheric pressure is (a) Strong skeletal system. The skeletal system provides essential structural support to the body, consisting of bones, cartilage, ligaments, and tendons. It forms a sturdy framework that distributes the body’s weight and withstands external forces. Without a strong skeletal system, the body would collapse under pressure, leading to severe injuries or even death. Additionally, bones protect vital organs, such as the brain, heart, and lungs, from damage. The skeletal system also serves as attachment points for muscles, allowing movement and locomotion. While other factors like fluid in cells, strong will, and firm muscular structure contribute to overall body function, it is primarily the strong skeletal system that prevents the body from crushing under high atmospheric pressure, ensuring structural integrity and survival.
See less