Biology Quiz - Competitive Exams NEET
Free practice quiz: Biology (Competitive Exams NEET). 73 multiple-choice questions with answers and explanations. Play online, no sign-up needed.
This Competitive Exams NEET practice quiz has 73 multiple-choice questions on Biology. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.
Start quiz: 73 questions, freeSample questions
Which organelle is known as the powerhouse of the cell?
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Answer: C. Mitochondria
Photosynthesis in C4 plants is more efficient than in C3 plants because:
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Answer: A. They lack photorespiration
Which of the following enzymes catalyzes the conversion of glucose to glucose-6-phosphate in glycolysis?
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Answer: A. Hexokinase
Which of the following hormones promotes cell division and is used in tissue culture?
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Answer: B. Cytokinin
Which type of RNA carries amino acids to the ribosome during translation?
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Answer: A. tRNA
More questions in this quiz
Answers and explanations are in the full quiz.
- Which biomolecule is the primary stored form of energy in animals?
- Which of the following is the site of protein synthesis in a cell?
- In humans, which blood vessel carries oxygenated blood from the lungs to the heart?
- Which plant tissue is primarily responsible for the transport of water and minerals?
- Which hormone is secreted by the beta cells of the islets of Langerhans?
- The enzyme that unwinds the DNA double helix during replication is:
- Which of the following is an example of a coelenterate?
- Which stage of meiosis is characterized by the pairing of homologous chromosomes?
- Which pigment is responsible for the green color of leaves?
- In which part of the nephron does maximum reabsorption of glucose and amino acids occur?
- Which vitamin deficiency causes night blindness?
- The genetic material of HIV is:
- Which of the following is NOT a function of the liver?
- The process by which a cell engulfs solid particles is called:
- Which of the following is a monosaccharide?
- Which type of immunity is conferred by the transfer of antibodies from mother to fetus?
- Which of the following is a nitrogenous base found in RNA but not in DNA?
- The theory of spontaneous generation was disproved by:
- Which of the following enzymes is used in the polymerase chain reaction (PCR)?
- Which of the following is the correct sequence of stages in the life cycle of Plasmodium in humans?
- Which of the following is a characteristic feature of the phylum Echinodermata?
- In an ecosystem, the amount of energy transferred from one trophic level to the next is approximately:
- Which of the following structures is present in a prokaryotic cell?
- Which of the following is the primary site of lipid synthesis in a eukaryotic cell?
- Which of the following organelles contains hydrolytic enzymes and is involved in intracellular digestion?
- Which of the following is the site of oxidative phosphorylation in eukaryotic cells?
- Which of the following is the most abundant protein in the human body?
- Which of the following is the correct order of phases in the cell cycle?
- During which phase of mitosis do sister chromatids separate and move to opposite poles?
- Which of the following is the term for the production of gametes in humans?
- Which of the following is a mechanism of sex determination in humans?
- Which of the following genetic disorders is caused by trisomy of chromosome 21?
- Which of the following is the enzyme responsible for the synthesis of RNA from a DNA template?
- Which of the following is a stop codon in the genetic code?
- Which of the following is the vector used by Agrobacterium tumefaciens to transfer DNA into plant cells?
- Which of the following is the primary mode of transmission of malaria?
- Which of the following is the causative agent of tuberculosis?
- Which of the following is the site of light reaction in chloroplasts?
- Which of the following is the first stable product of C3 cycle (Calvin cycle)?
- Which of the following is the primary function of xylem in plants?
- Which of the following is the correct sequence of the human alimentary canal?
- Which of the following enzymes is present in saliva and begins starch digestion?
- Which of the following is the site of exchange of gases in the human lungs?
- Which of the following is the part of the brain that regulates body temperature and hunger?
- Which of the following is the primary nitrogenous waste excreted by humans?
- Which cellular junction allows direct cytoplasmic communication between adjacent animal cells through connexons?
- Which component of the bacterial cell wall is responsible for the structural strength provided by cross-linking of peptidoglycan?
- Which plant hormone is responsible for promoting seed dormancy and inhibiting germination?
- Which factor is responsible for the Bohr effect, where hemoglobin's oxygen affinity decreases at tissues?
- Which of the following describes the function of the bundle sheath cells in C4 plants?
- In the human heart, which structure prevents the backflow of blood from the left ventricle into the left atrium?
- Which component of the lac operon acts as a repressor in the absence of lactose?
- Which layer of the retina is directly involved in the absorption of light by rhodopsin?
- In the human kidney, which part of the loop of Henle is permeable to water but not to solutes?
- What is the primary role of the enzyme nitrogenase in biological nitrogen fixation?
- Which of the following structures in a plant is responsible for the perception of gravity (gravitropism)?
- Which of the following is the correct sequence of events in the inflammatory response?
- Which of the following is the primary function of the sodium-potassium pump in nerve cells?
- In which part of the chloroplast does the Calvin cycle take place?
- Which of the following hormones is responsible for the milk ejection reflex in lactating mothers?