Chapter 2 Levels Of Organization Of Life Cell Multiple Choice Questions
Question 1. Who invented the Electron microscope?
- Robertson
- Palate
- Knoll and Ruska
- Leeuwenhoek
Answer:
3. Knoll and Ruska
Question 2. The largest unicellular plant is
- Spirogyra
- Mucor
- Acetabularia
- Vnlvox
Answer:
3. Acetabularia
Question 3. The cell membrane is
- Absent in prokaryotic cells
- Present in eukaryotic cells
- Present in some prokaryotic cells and all eukaryotic cells
- Present, in all types of cells
Answer:
3. Present in some prokaryotic cells and all eukaryotic cells
Read and Learn More WBBSE Class 9 Life Science MCQs
Question 4. The selectively permeable nature of the cell membrane allows the entry of through it.
- All types of solutions
- All types of solvents
- Some solutes without solvents
- Some solutes with solvents
Answer:
2. All types of solvents
Question 5. The main structural components of the cell membrane are
- Proteins and lipids
- Proteins and carbohydrates
- Lipids and carbohydrates
- Cellulose and lignin
Answer:
1. Proteins and lipids
WBBSE Class 9 Levels of Organization MCQs
Question 6. Which of the cellular functions does not involve a cell membrane?
- Cellular secretion
- Cellular respiration
- Cell drinking
- Cell eating
Answer:
2. Cellular respiration
Question 7. Which type of protein does remain submerged within the lipid bilayer of a cell membrane?
- External protein
- Internal protein
- Extrinsic protein
- Intrinsic protein
Answer:
4. Intrinsic protein
Question 8. According to the Fluid mosaic model’, which of the statements is best fitted?
- Phospholipid molecules remain suspended in the protein bilayer
- Protein molecules remain suspended in the fluid lipid bilayer
- Carbohydrate chains remain attached to the protein molecules
- Protein molecules remain fixed to the fluid lipid molecules
Answer:
2. Protein molecules remain suspended in the fluid lipid bilayer
Question 9. You will find ceil wall in a
- Blood cell
- Bacterial cell
- Bone cell
- Muscle cell
Answer:
2. Bacterial cell
Question 10. The basic structural component of cell wall in a photosynthetic plant is
- Pectin and protein
- Lignin and protein
- Cellulose and pectin
- Hemicellulose and lipid
Answer:
3. Cellulose and pectin
Key MCQs on Levels of Organization of Life
Question 11. The bacterial cell wall is composed of
- Proteins and carbohydrates
- Amino acids and carbohydrates
- Proteins and lipids
- Phospholipids and amino acids
Answer:
2. Amino acids and carbohydrates
Question 12. The primary cell wall is present
- Just above the cell membrane
- Beyond the secondary cell wall
- Below the secondary cell wall
- Below cell membrane
Answer:
2. Beyond the secondary cell wall
Question 13. Which two are essential parts of a living cell?
- Nucleus and protoplasm
- Nucleus and cytoplasm
- Cell membrane and nucleus
- Cell membrane and protoplasm
Answer:
4. Cell membrane and protoplasm
Question 14. Cell organelles remain suspended in
- Cell sap
- Cytoplasm
- Protoplasm
- Nuclear sap
Answer:
2. Cytoplasm
Practice MCQs for Class 9 Life Science Chapter 2
Question 15. Which cellular material helps in the locomotion of Amoeba?
- Cytoplasm
- Flagella
- Cilia
- All of these
Answer:
1. Cytoplasm
Question 16. The intracellular distribution of molecules depends upon the flow of
- Nucleoplasm
- Cell sap
- Cytoplasm
- Nucleoplasm and cytoplasm
Answer:
3. Cytoplasm
Question 17. The nucleus is popularly known as
- The brain of a cell
- The brain of the tissues
- Heart of a cell
- Male gametes
Answer:
1. The brain of a cell
Question l8. The overall activity of a living cell is controlled by
- Mitochondrion
- Plastid
- Cytoplasm
- Nucleus
Answer:
4. Nucleus
Important Questions on Cell Structure for MCQs
Question 19. The nucleolus is the denser part of a nucleus, which is rich in
- DNA
- RNA
- Protein
- Both 1 and 2
Answer:
2. RNA
Question 20. The cell organelles which have their own DNA are
- Nucleus and Golgi body
- Golgi body and mitochondrion
- Mitochondrion and chloroplastid
- Chloroplastid and nucleus
Answer:
3. Mitochondrion and chloroplastid
Question 21. Mitochondria is absent in
- RBC of mammals
- Nerve cells.
- Muscle cells
- All of these
Answer:
1. RBC of mammals
Question 22. Cristae of mitochondria are projected
- Towards outer chamber
- Towards inner chamber
- Beyond outer surface
- None of these
Answer:
2. Towards inner chamber
Question 23. The cell organelle involved in the production of ATP is
- Nucleus
- Mitochondrion
- Plastid
- Golgi body
Answer:
2. Mitochondrion
Sample MCQs from WBBSE Class 9 Life Science
Question 24. Apart from the nucleus, two other cell organelles with double membranes are
- Mitochondrion and Golgi body
- Plastid and Golgi body.
- Golgi body and endoplasmic reticulum
- Mitochondria and plastid
Answer:
4. Mitochondria and plastid
Question 25. ATP molecules are stored in the mitochondria.
- Outer surface
- Membranes
- Outer chamber
- Matrix
Answer:
4. Matrix
Question 26. Chlorophyll molecules remain stored in
- Thylakoids
- The inner chamber of chloroplastids
- Stroma
- The outer chamber of chloroplastids
Answer:
1. Thylakoids
Question 27. Reactions of photosynthesis occur in the
- Stroma of chloroplastids
- Grana of chloroplastids
- Both 1 and 2
- None of these
Answer:
3. Both 1 and 2
Question 28. The yellow-coloured plastid found in plants is
- Xanthoplast
- Amyloplast
- Leucoplast
- Chloroplast
Answer:
1. Xanthoplast
Question 29. A unicellular organism with a plastid is
- Hydra
- Amoeba
- Agaricus
- Euglena
Answer:
4. Euglena
Question 30. The minute cell organelles, which remain attached to the rough endoplasmic reticulum is
- Small Golgi vesicles
- Lysosomes
- Ribosomes
- Large Golgi vesicles
Answer:
3. Ribosomes
Question 31. The cell organelle, which divides cytoplasm in a number of intracellular compartments is
- Endoplasmic reticulum
- Mitochondrion
- Middle lamella
- Golgi cisternae
Answer:
1. Endoplasmic reticulum
Question 32. Which of the following cell organelles have a single membrane?
- Plastids and Golgi bodies
- Mitochondria and Golgi bodies
- Mitochondria and plastids
- Golgi bodies and lysosomes
Answer:
4. Golgi bodies and lysosomes
Study Tips for Class 9 Levels of Organization MCQs
Question 33. Ribosomes remain within or in contact of
- Nucleus, Golgi bodies and ER
- Nucleus, cytoplasm, RER, chloroplast and mitochondrion
- Nucleus and cytoplasm
- Nucleus, cytoplasm and RER
Answer:
2. Nucleus, cytoplasm, RER, chloroplast and mitochondrion
Question 34. 70S ribosomes are seen in the cytoplasm of
- White Blood cells
- Neurones
- Muscle cell
- Bacterial cell
Answer:
4. Bacterial cell
Question 35. Synthesis of proteins within a cell involves
- Lysosome
- Golgi body
- Ribosome
- Centrosome
Answer:
3. Ribosome
Chapter 2 Life Science Quiz Questions
Question 36. The letter ‘S’ of the 80S ribosome indicates
- Standard
- Size
- Sedimentation coefficient
- All of these
Answer:
3. Sedimentation coefficient
Question 37. The cell organelle, which is the ‘protein factory of the cell’ is
- Plastid
- Golgi body
- Nucleus
- Ribosome
Answer:
4. Ribosome
Question 38. In humans, which cell does not divide?
- Matured RBC
- Matured neurone
- Matured muscle cell
- Sieve tube
Answer:
2. Matured neurone
Question 39. A prokaryotic cell is devoid of
- Cell membrane
- DNA
- True nucleus
- RNA
Answer:
3. True nucleus
Concepts Related to Levels of Organization for MCQs
Question 40. In a prokaryotic cell, the mitochondria are replaced by
- Polysome
- Ribosome
- Mesosome
- Informosome
Answer:
3. Mesosome
Question 41. The organisms which do not possess cytoplasm, are called
- Prokaryotes
- Eukaryotes
- Mesokaryotes
- None of these
Answer:
4. None of these
Question 42. Protoplasm and a
- Nucleus
- Nucleolus
- Nucleoid
- Nucellus
Answer:
3. Nucleoid