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.

Sample questions

1. Which organelle is known as the powerhouse of the cell?

   1. Golgi apparatus
   2. Lysosome
   3. Mitochondria
   4. Ribosome
   Show answer

   Answer: C. Mitochondria

2. Photosynthesis in C4 plants is more efficient than in C3 plants because:

   1. They lack photorespiration
   2. They have more chlorophyll
   3. They use less water
   4. They have larger leaves
   Show answer

   Answer: A. They lack photorespiration

3. Which of the following enzymes catalyzes the conversion of glucose to glucose-6-phosphate in glycolysis?

   1. Hexokinase
   2. Pyruvate kinase
   3. Aldolase
   4. Phosphofructokinase
   Show answer

   Answer: A. Hexokinase

4. Which of the following hormones promotes cell division and is used in tissue culture?

   1. Gibberellin
   2. Cytokinin
   3. Abscisic acid
   4. Auxin
   Show answer

   Answer: B. Cytokinin

5. Which type of RNA carries amino acids to the ribosome during translation?

   1. tRNA
   2. mRNA
   3. siRNA
   4. rRNA
   Show answer

   Answer: A. tRNA

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