NEET Biology — 10s Rapid Drill
Eight medium-difficulty multiple-choice questions, 10 seconds each, focusing on high-yield concepts for NEET Biology.
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Quiz Questions & Answers
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Question 1: Which arrangement best describes the fluid mosaic model of the plasma membrane?
Proteins embedded in a mobile phospholipid bilayer
Cholesterol sheet separating two protein layers
Rigid protein lattice surrounding a static lipid layer
Single layer of phospholipids with free-floating carbohydrates
Question 2: A patient lacks functional phosphofructokinase in muscle; which metabolic consequence is most direct?
Increased conversion of pyruvate to acetyl-CoA
Enhanced glycogen phosphorylase activity
Uncontrolled gluconeogenesis in muscle
Glycolysis is inhibited at a key regulatory step
Question 3: Which feature distinguishes innate immunity from adaptive immunity?
Production of high-affinity antibodies after first exposure
Cellular receptors that rearrange gene segments
Immediate, non-specific response without memory
Long-lived plasma cells present at birth
Question 4: Which plant hormone primarily promotes cell elongation in shoots?
Auxin (indole-3-acetic acid)
Abscisic acid
Gibberellin
Ethylene
Question 5: Which statement best explains why antibiotics that target peptidoglycan synthesis are selective for bacteria?
Animal cells rapidly degrade these antibiotics
Antibiotics bind to mitochondrial ribosomes only
Peptidoglycan is present in bacterial cell walls but absent in animal cells
Bacteria import antibiotic molecules more efficiently
Question 6: In population genetics, what does Hardy–Weinberg equilibrium assume about mating?
Assortative mating based on phenotype
Frequent gene flow between populations
Only dominant alleles are expressed
Random mating with no selection or migration
Question 7: Which mechanism explains how DNA polymerase corrects most replication errors?
Telomerase trimming of mismatches
Mismatch repair before replication begins
3'→5' exonuclease proofreading activity
Base excision repair during transcription
Question 8: Why is water's high specific heat important for organisms?
It raises the freezing point of cytoplasm
It stabilizes internal and environmental temperatures for biochemical reactions
It enables water to act as an acid catalyst
It increases diffusion rates across membranes