WBBSE Class 9 Life Science Chapter 2 Levels Of Organization Of Life Cell Multiple Choice Questions

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Chapter 2 Levels Of Organization Of Life Cell Multiple Choice Questions

Question 1. Who invented the Electron microscope?

  1. Robertson
  2. Palate
  3. Knoll and Ruska
  4. Leeuwenhoek

Answer:

3. Knoll and Ruska

Question 2. The largest unicellular plant is

  1. Spirogyra
  2. Mucor
  3. Acetabularia
  4. Vnlvox

Answer:

3. Acetabularia

Question 3. The cell membrane is

  1. Absent in prokaryotic cells
  2. Present in eukaryotic cells
  3. Present in some prokaryotic cells and all eukaryotic cells
  4. 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.

  1. All types of solutions
  2. All types of solvents
  3. Some solutes without solvents
  4. Some solutes with solvents

Answer:

2. All types of solvents

Question 5. The main structural components of the cell membrane are

  1. Proteins and lipids
  2. Proteins and carbohydrates
  3. Lipids and carbohydrates
  4. Cellulose and lignin

Answer:

1. Proteins and lipids

Question  6. Which of the cellular functions does not involve a cell membrane?

  1. Cellular secretion
  2. Cellular respiration
  3. Cell drinking
  4. Cell eating

Answer:

2. Cellular respiration

Question 7. Which type of protein does remain submerged within the lipid bilayer of a cell membrane?

  1. External protein
  2. Internal protein
  3. Extrinsic protein
  4. Intrinsic protein

Answer:

4. Intrinsic protein

Question 8. According to the Fluid mosaic model’, which of the statements is best fitted?

  1. Phospholipid molecules remain suspended in the protein bilayer
  2. Protein molecules remain suspended in the fluid lipid bilayer
  3. Carbohydrate chains remain attached to the protein molecules
  4. 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

  1. Blood cell
  2. Bacterial cell
  3. Bone cell
  4. Muscle cell

Answer:

2. Bacterial cell

Question 10. The basic structural component of cell wall in a photosynthetic plant is

  1. Pectin and protein
  2. Lignin and protein
  3. Cellulose and pectin
  4. Hemicellulose and lipid

Answer:

3. Cellulose and pectin

Question 11. The bacterial cell wall is composed of

  1. Proteins and carbohydrates
  2. Amino acids and carbohydrates
  3. Proteins and lipids
  4. Phospholipids and amino acids

Answer:

2. Amino acids and carbohydrates

Question 12. The primary cell wall is present

  1. Just above the cell membrane
  2. Beyond the secondary cell wall
  3. Below the secondary cell wall
  4. Below cell membrane

Answer:

2. Beyond the secondary cell wall

Question 13. Which two are essential parts of a living cell?

  1. Nucleus and protoplasm
  2. Nucleus and cytoplasm
  3. Cell membrane and nucleus
  4. Cell membrane and protoplasm

Answer:

4. Cell membrane and protoplasm

Question  14. Cell organelles remain suspended in

  1. Cell sap
  2. Cytoplasm
  3. Protoplasm
  4. Nuclear sap

Answer:

2. Cytoplasm

Question 15. Which cellular material helps in the locomotion of Amoeba?

  1. Cytoplasm
  2. Flagella
  3. Cilia
  4. All of these

Answer:

1. Cytoplasm

Question 16. The intracellular distribution of molecules depends upon the flow of

  1. Nucleoplasm
  2. Cell sap
  3. Cytoplasm
  4. Nucleoplasm and cytoplasm

Answer:

3. Cytoplasm

Question 17. The nucleus is popularly known as

  1. The brain of a cell
  2. The brain of the tissues
  3. Heart of a cell
  4. Male gametes

Answer:

1. The brain of a cell

Question l8. The overall activity of a living cell is controlled by

  1. Mitochondrion
  2. Plastid
  3. Cytoplasm
  4. Nucleus

Answer:

4. Nucleus

Question 19. The nucleolus is the denser part of a nucleus, which is rich in

  1. DNA
  2. RNA
  3. Protein
  4. Both 1 and 2

Answer:

2. RNA

Question 20. The cell organelles which have their own DNA are

  1. Nucleus and Golgi body
  2. Golgi body and mitochondrion
  3. Mitochondrion and chloroplastid
  4. Chloroplastid and nucleus

Answer:

3. Mitochondrion and chloroplastid

Question 21. Mitochondria is absent in

  1. RBC of mammals
  2. Nerve cells.
  3. Muscle cells
  4. All of these

Answer:

1. RBC of mammals

Question 22. Cristae of mitochondria are projected

  1. Towards outer chamber
  2. Towards inner chamber
  3. Beyond outer surface
  4. None of these

Answer:

2. Towards inner chamber

Question 23. The cell organelle involved in the production of ATP is

  1. Nucleus
  2. Mitochondrion
  3. Plastid
  4. Golgi body

Answer:

2. Mitochondrion

Question 24. Apart from the nucleus, two other cell organelles with double membranes are

  1. Mitochondrion and Golgi body
  2. Plastid and Golgi body.
  3. Golgi body and endoplasmic reticulum
  4. Mitochondria and plastid

Answer:

4. Mitochondria and plastid

Question 25. ATP molecules are stored in the mitochondria.

  1. Outer surface
  2. Membranes
  3. Outer chamber
  4. Matrix

Answer:

4. Matrix

Question 26. Chlorophyll molecules remain stored in

  1. Thylakoids
  2. The inner chamber of chloroplastids
  3. Stroma
  4. The outer chamber of chloroplastids

Answer:

1. Thylakoids

Question 27. Reactions of photosynthesis occur in the

  1. Stroma of chloroplastids
  2. Grana of chloroplastids
  3. Both 1 and 2
  4. None of these

Answer:

3. Both 1 and 2

Question 28. The yellow-coloured plastid found in plants is

  1. Xanthoplast
  2. Amyloplast
  3. Leucoplast
  4. Chloroplast

Answer:

1. Xanthoplast

Question 29. A unicellular organism with a plastid is

  1. Hydra
  2. Amoeba
  3. Agaricus
  4. Euglena

Answer:

4. Euglena

Question 30. The minute cell organelles, which remain attached to the rough endoplasmic reticulum is

  1. Small Golgi vesicles
  2. Lysosomes
  3. Ribosomes
  4. Large Golgi vesicles

Answer:

3. Ribosomes

Question 31. The cell organelle, which divides cytoplasm in a number of intracellular compartments is

  1. Endoplasmic reticulum
  2. Mitochondrion
  3. Middle lamella
  4. Golgi cisternae

Answer:

1. Endoplasmic reticulum

Question 32. Which of the following cell organelles have a single membrane?

  1. Plastids and Golgi bodies
  2. Mitochondria and Golgi bodies
  3. Mitochondria and plastids
  4. Golgi bodies and lysosomes

Answer:

4. Golgi bodies and lysosomes

Question 33. Ribosomes remain within or in contact of

  1. Nucleus, Golgi bodies and ER
  2. Nucleus, cytoplasm, RER, chloroplast and mitochondrion
  3. Nucleus and cytoplasm
  4. Nucleus, cytoplasm and RER

Answer:

2. Nucleus, cytoplasm, RER, chloroplast and mitochondrion

Question 34. 70S ribosomes are seen in the cytoplasm of

  1. White Blood cells
  2. Neurones
  3. Muscle cell
  4. Bacterial cell

Answer:

4. Bacterial cell

Question 35. Synthesis of proteins within a cell involves

  1. Lysosome
  2. Golgi body
  3. Ribosome
  4. Centrosome

Answer:

3. Ribosome

Question 36. The letter ‘S’ of the 80S ribosome indicates

  1. Standard
  2. Size
  3. Sedimentation coefficient
  4. All of these

Answer:

3. Sedimentation coefficient

Question 37. The cell organelle, which is the ‘protein factory of the cell’ is

  1. Plastid
  2. Golgi body
  3. Nucleus
  4. Ribosome

Answer:

4. Ribosome

Question 38. In humans, which cell does not divide?

  1. Matured RBC
  2. Matured neurone
  3. Matured muscle cell
  4. Sieve tube

Answer:

2. Matured neurone

Question 39. A prokaryotic cell is devoid of

  1. Cell membrane
  2. DNA
  3. True nucleus
  4. RNA

Answer:

3. True nucleus

Question 40. In a prokaryotic cell, the mitochondria are replaced by

  1. Polysome
  2. Ribosome
  3. Mesosome
  4. Informosome

Answer:

3. Mesosome

Question 41. The organisms which do not possess cytoplasm, are called

  1. Prokaryotes
  2. Eukaryotes
  3. Mesokaryotes
  4. None of these

Answer:

4. None of these

Question 42. Protoplasm and a

  1. Nucleus
  2. Nucleolus
  3. Nucleoid
  4. Nucellus

Answer:

3. Nucleoid

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