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.
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 less