What is the formula for calculating magnification?
A. Image size / Real size
B. Real size / Image size
C. Image size × Real size
D. Real size × Image size
Answer: A
Which part of the microscope holds and rotates the objective lenses?
A. Stage
B. Base
C. Revolving nosepiece
D. Arm
Answer: C
What is the function of a Bunsen burner in the laboratory?
A. Measure liquids
B. Grind substances
C. Heat substances
D. Hold test tubes
Answer: C
Which of the following is NOT a true berry?
A. Tomato
B. Strawberry
C. Grape
D. Blueberry
Answer: B
Which of the following is a characteristic of prokaryotic cells?
A. They have nucleus
B. They lack nucleus
C. They have organelles
D. They are larger
Answer: B
Which reagent is used to test for starch?
A. Biuret solution
B. Benedict’s solution
C. Iodine solution
D. Sudan III
Answer: C
Osmosis is best described as:
A. Movement of solute from high to low
B. Movement of water across semi-permeable membrane
C. Movement of particles against gradient
D. Movement of gas molecules
Answer: B
Which organelle is responsible for energy production?
A. Nucleus
B. Ribosome
C. Mitochondrion
D. Golgi body
Answer: C
Which structure controls what enters and leaves the cell?
A. Cytoplasm
B. Cell membrane
C. Nucleus
D. Cell wall
Answer: B
Which test is used to detect proteins?
A. Benedict’s test
B. Iodine test
C. Biuret test
D. Sudan III test
Answer: C
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