1. The plasma membrane helps in
- Protein synthesis
- Controlling the passage of water and dissolved substances into and out of the cell
- Controlling the passage of water into and out of the cell
- None of the above
2. DNA synthesis in a mitotic cycle takes place during
- G1 phase
- M Phase
- G2 phase
- S Phase
3. Granular Endoplasmic reticulum is
- Smoothe endoplasmic reticulum which is deposited proteins
- Smooth endoplasmic reticulum which is deposited nucleic acids
- Smooth Endoplasmic reticulum which is deposited ribosomes
- None of the above
4. Mitochondria or chondriosomes were discovered by
- Brown
- Benda
- Sutton
- Palade
5. Ribosomes contain the highest percentage of
- Enzymes
- Carbohydrates
- RNA
- DNA
6. G1-Phase is
- A period of rapid RNA and Protein synthesis
- The period of chromosomal division
- A period of DNA synthesis
- The period between the end of DNA synthesis and beginning of prophase
7. The nucleus of an animal cell is made of several parts. One part which is wrongly given below is
- Nucleoplasm
- Centrosome
- Chromatin
- Karyosome
8. Grana lamella are the sites of
- Dark reaction
- Photophosphorylation
- Mutation
- Variation
9. Rapid RNA and protein synthesis in a mitotic cycle takes place during
- G1 phase
- M Phase
- G2 Phase
- S Phase
10. Cytochromes present in cells are
- Carbon acceptors
- Oxygen acceptor
- Hydrogen acceptors
- Nitrogen acceptors
11. ATP Synthesis takes place in
- Lysosomes
- Peroxisomes
- Mitochondria
- Chromosomes
12. Cell organelle which is present only in animal cell is
- Chloroplast
- Nucleus
- Centrosome
- Mitochondria
13. Mitochondria can be separated by
- Electrophoresis
- Centrifugation
- Electrophoresis and Centrifugation
- Lysis
14. Mitochondria are not found in
- Head of Sperm
- A Cell
- Mature erythrocyte
- A young erythrocyte
15. Cell organelles covered by a single membrane is
- Peroxisome
- Lysosome
- Glyoxysome
- All of these
16. Chromosomes contain
- Nucleus
- Haemoglobin
- DNA
- Nucleolus
17. An organelle associated with protein synthesis is
- Chromosomes
- Lysosomes
- Chondriosomes
- Ribosomes
18. Cell theory is pronounced by
- Beadle and Tautam
- Lederberg and Lederburg
- Schleiden and Schwann
- Watson and Crick
19. cytoplasm contains many organelles. Which of the following is not true?
- Ribosome
- Lipid
- Centrosome
- Mitochondria
20. The most important discovery of the present century in the field of biology is
- Blood groups
- Sulpha drugs
- Genes
- Antibodies
21. The correct sequence of the mitotic cell cycle is
- G1-Phase, S-Phase, G2-Phase, M-Phase
- M-Phase, G1-Phase, G2-Phase, S-Phase
- M-Phase, G2-Phase, G1-Phase, S-Phase
- M-Phase, G1-Phase, S-Phase, G2-Phase
22. Crossing over takes place during
- Leptotene
- Zygotene
- Pachytene
- Diplotene
23. Which one of the following is not present in a plant cell?
- Plastids
- Mitochondria
- Cell Wall
- Centrioles
24. During Crossing over, the number of strands that participate is
- One
- Four
- Three
- Two
25. The most vital part of the cell is
- Chloroplast
- Ribosomes
- Nucleus
- Mitochondria
