1) Chemically DNA differs from RNA by __________________? a. Thymine present in DNA and Uralic in RNA b. Deoxyribose and thymine is present in DNA and ribose and Ural in RNA c. Ribose and thymine in DNA and deoxyribose and uracil in RNA d. Deoxyribose in DNA and ribose in RNA
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2) Electron microscope was invented by _________________? a. Knoll and Risks b. Schwaan c. Sigmund d. Robert Hook
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3) Ribosomes are important because they help in __________________? a. Movement b. Respiration c. Protein synthesis d. Growl
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4) Who discovered mitochondria__________________? a. Palade b. Altmann c. Cowdry d. Garner
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5) Plastids bring about___________________? a. Secretion b. Respiration c. Excretion d. Conversion of light energy into chemical energy
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6) Which part of cell is important for and synthesis protoplasm ______________________? a. Mitochondria b. Nucleus c. Chloroplast d. Chromosomes
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7) Carbohydrates synthesis is carried out by ___________________? a. Ribosomes b. Golgi bodies c. Mitochondria d. Plastid
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8) Which of the cell organelle is considered to be rich in catabolic enzymes_____________________? a. Golgi bodies b. Mitochondria c. Lysosome d. Endoplasmic reticulum
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9) The diameter of mitochondria is __________________? a. 2-4 micron b. 1-4 micron c. 0.5-2 micron d. 40-70 micron
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10) The cellular structure which always disappears during mitosis is___________________? a. Plastids b. Protoplasm c. Membrane d. Nuclear and membrane
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11) Which statement is true___________________? a. Etiolation is not a reversible process b. Etiolation is genetically while albinism is physiological c. Etiolation is physiological while albinism is genitival d. Etiolation and albinism are synonyms
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