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Q 1. Clochicine interferes with
Chromosome replication
Organisation of spindle
Chromosome condensation
Incorporation of nitrogen bases
Alkaloid colchicine (produced by many plants of family Liliaceae) inhibits the microtubules to assemble to form spindle fibres. Therefore, alkaloid colchicine interferes with mitosis and chromosome segregation and the cell division is arrested at metaphase in presence of colchicine. So, the correct answer is 'Organisation of spindle'.
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Q 2. Double membrane is absent in –
Mitochondrion
Chloroplast
Nucleus
Lysosome
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Q 3. Animal cell is limited by
Plasma membrane
Shell membrane
Cell wall
Basement membrane
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Q 4. The radiant energy of sunlight is converted to chemical energy and stored as
AMP
ADP
ATP
APP
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Q 5. Root hair absorbs water from soil through –
Osmosis
Active transport
Diffusion
Endocytosis
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Q 6. The barrier between the protoplasm and outer environment in a plant cell is –
Cell membrane
Nuclear membrane
Cell wall
Tonoplast
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Q 7. An animal cell differs from a plant cell in respect of –
ER
Cell wall
Ribosomes
Cell membrane.
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Q 8. If the nucleus is a cell's "control centre" and chloroplasts its "solar collectors". Which of the following might be called the cell's combination "food processor" and "garbage disposer"?
Lysosome
Ribosome
Golgi apparatus
Nucleolus
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Q 9. The longest cell in human body is –
Neuron
Muscle fibre
Epithelial cell
Bone cell
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Q 10. Identify human cells which lack nucleus–
WBC
RBC
Platelets
Nerve cells
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Q 11. The energy currency of a cell is
ADP
AMP
ATP
CTP
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Q 12. Which organelle releases oxygen?
Ribosome
Golgi apparatus
Mitochondria
Chloroplast.
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Q 13. The term "protoplasm" to the living substance present inside the cell, was given by
Robert Hooke
Robert Brown
J.E. Purkinje
W.Flemming
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Q 14. Ribosomes are the centre for –
Respiration
Photosynthesis
Protein synthesis
Fat synthesis.
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Q 15. Lysosomes are the reservoirs of
Fat
RNA
Secretory glycoproteins
Hydrolytic enzymes.
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Q 16. The membrane surrounding the vacuole of a plant cell is called
Tonoplast
Plasma membrane
Nuclear membrane
Cell wall
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Q 17. Centriole is associated with –
DNA synthesis
Reproduction
Spindle formation
Respiration
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Q 18. The cell organelle associated with cell secretion is
Plastids
Mitochondria
Golgi apparatus
Nucleolus
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Q 19. Which of the following is an inclusion?
Mitochondrion
Lysosome
Golgi complex
Starch grain
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Q 20. Which of the following would not be considered part of a cell's cytoplsm?
Ribosome
Nucleus
Mitochondrion
Microtubule
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Q 21. Which of the following is called the brain of the cell?
Nucleus
Mitochondria
Ribosomes
Plasma membrane
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Q 22. Which one is not a part of nucleus?
Chromatin
Nucleolus
Centrosome
Nucleoplasm
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Q 23. The common feature amongst nucleus, chloroplast and mitochondrion is
DNA
Lamellae
Cristae
All of these
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Q 24. Nucleus is separated from surrounding cytoplasm by a nuclear envelope which is
Single and porous
Double and porous
Single and nonporous
Double and nonporous
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Q 25. Nucleoplasm is continuous with cytoplasm through
Centriole
Golgi apparatus
Nuclear pores
Endoplasmic reticulum