The uptake of fluid alongside particulate food by Amoeba is accomplished via the process of ______ ?
Show answer Hide answer
Answer: C. Phagocytosis
Explanation
Amoeba ingests solid food particles along with surrounding liquid through the process of phagocytosis. Cellular extensions called pseudopodia wrap around the target material to form an internal feeding vacuole. This bulk transport mechanism enables single-celled organisms to consume large external nutrients successfully. Phagocytosis involves actin cytoskeleton rearrangement to drive membrane protrusion around extracellular objects. Once engulfed, the resulting phagosome fuses with cellular lysosomes containing digestive enzymes. Free-living amoebas depend entirely on engulfing organic debris and bacteria to meet their nutritional needs.
Understanding unicellular feeding strategies provides foundational knowledge of eukaryotic cell biology and evolution. Pathogenic amoebas also use phagocytosis-like mechanisms to interact with host tissues during infections. Microscopic study of protist nutrition demonstrates core biological principles of cellular transport and digestion. Endosmosis describes the net inward movement of water molecules across a semipermeable cellular membrane. Pinocytosis is restricted strictly to the uptake of extracellular liquid droplets rather than solid particles. None of these is incorrect because phagocytosis is indeed the accurate biological term for this process.
Related questions
Q1. Adult iodine deficiency resulting in subnormal iodothyroxine output triggers____________?
Show answer Hide answer
Answer: A. Myxedema
Adult hypothyroidism leading to a deficiency of thyroid hormones results in a condition called myxedema. Myxedema manifests as severe physical sluggishness, facial swelling, and slowed metabolic processing rates. Subnorm...
Q2. Insulin and glucagon hormones possess a __________ biochemical nature.
Show answer Hide answer
Answer: A. Protein
Insulin and glucagon are peptide hormones composed of amino acid chains, classifying them chemically as proteins. These molecules are synthesized by specialized pancreatic cells as chains of bonded amino acid building bl...
Q3. The anatomical insertion point of the human biceps muscle is located on_________?
Show answer Hide answer
Answer: B. Radius
The human biceps brachii muscle tendon inserts distally onto the radial tuberosity of the radius bone. This specific insertion point allows the biceps to exert strong leverage when flexing the forearm. Contraction of the...
Q4. Abnormal or incomplete digestive processing is clinically designated as________?
Show answer Hide answer
Answer: B. Dyspepsia
Dyspepsia is the medical term used to describe persistent or recurrent symptoms of impaired digestion. Patients experiencing dyspepsia often report upper abdominal discomfort, bloating, or nausea after eating meals. This...
Q5. The cellular uptake of extracellular liquid droplets via membrane invagination is termed___________?
Show answer Hide answer
Answer: D. Pinocytosis
Pinocytosis is a form of endocytosis where cells ingest extracellular fluid and dissolved solutes via vesicles. The plasma membrane folds inward to entrap tiny droplets of fluid from the surrounding cellular environment....
Q6. A neurological convulsive condition characterized by sudden, transient disruptions in motor, sensory, or psychic functions is________________?
Show answer Hide answer
Answer: B. Epilepsy
Epilepsy is a neurological disorder marked by sudden, recurrent episodes of sensory disturbance and convulsions. Abnormal electrical discharges sweeping across cerebral neurons trigger these transient disruptions in norm...