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Which of the following is NOT a function of blood?
Helps in the synthesis of starch
Transports waste materials
Transports hormones
Transports gases
Helps in the synthesis of starch
Blood is a specialized connective tissue that acts as the primary transport medium in the human body, facilitating the movement of gases, waste products, and hormones. Starch synthesis is a metabolic process that occurs in plants within plastids (like amyloplasts) via enzymes, not in animal blood.
Blood is a specialized connective tissue that acts as the primary transport medium in the human body, facilitating the movement of gases, waste products, and hormones. Starch synthesis is a metabolic process that occurs in plants within plastids (like amyloplasts) via enzymes, not in animal blood.
Think of blood as the 'highway system' of the city (body), carrying mail (hormones) and trash (waste) to their destinations, whereas starch synthesis is like a 'solar-powered factory' that only exists in farm fields (plants).
6CO2тАЛ+6H2тАЛOlightтАЛC6тАЛH12тАЛO6тАЛ+6O2тАЛ тАФ Photosynthesis, the precursor pathway to starch (C6тАЛH10тАЛO5тАЛ)nтАЛ production
Hb+4O2тАЛтЗМHb(O2тАЛ)4тАЛ тАФ Hemoglobin binding with oxygen for gas transport
Blood consists of plasma and formed elements (RBCs, WBCs, and platelets). It transports O2тАЛ and CO2тАЛ via hemoglobin in RBCs, metabolic wastes like urea to the kidneys for excretion, and endocrine hormones from glands to target organs. Starch synthesis is limited to photoautotrophic organisms and requires sunlight, CO2тАЛ, and H2тАЛO processed through the Calvin cycle.
Blood functions: transport, protection (immune response), and regulation (pH and temperature).
Starch is a polysaccharide storage carbohydrate found primarily in plants.
Humans obtain glucose by breaking down ingested starch; they do not synthesize it.
Circulatory system maintenance
Endocrine signal regulation
Option B, C, and D are all vital physiological roles performed by human blood.
Starch is the most common carbohydrate in the human diet but is never synthesized by animal blood.
A is correct тАФ Starch synthesis is a plant-based metabolic process, not a function of the human circulatory system.
Always distinguish between animal and plant physiology; synthesis of starch is a key indicator of plant cellular activity, never animal biology.
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