Fundamental Unit of Life-Class IX-Vasu Classes


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Fundamental Unit of Life-Class IX-Vasu Classes

1. Nuclear material without cover is found in

a) Mycoplasma and green algae
b) Bacteria and fungi only
c) Bacteria and blue green algae
d) None of the above

2. The word prokaryote means a cell

a) with many nuclei
b) with one nucleus
c) with diffused nucleus
d) without chloroplast

3. Cell theory was proposed by

a) Scheilden and Schwann
b) Robert Brown
c) Leeuwenhoek
d) Purkinje

4. The cell is not applied for

a) Algae
b) Bacteria
c) Virus
d) Fungi

5. Which of the following is not present in prokaryotes?

a) Ribosomes
b) Cell wall
c) Plasma membrane
d) Nuclear membrane

6. A cell will swell up if

a) The concentration of water molecules in the cell is higher than the concentration of water molecules in the surrounding medium.
b) The concentration of water molecules in the surrounding medium is higher than the concentration of water molecules in the cell.
c) The concentration of water molecules is same in the cell and in the surrounding medium.
d) The concentration of water molecules does not matter.

7. Which of the following statement marks as a difference between plant cell and animal cell?

a) Plant cells have cell wall which animal cells do not.
b) Plant cells do not have vacuole while animal cells do have.
c) Plant cells have only cell membrane while animal cells have both cell wall as well as cell membrane.
d) Plant cells have more plastids while animal cells have few plastids.

8. Endoplasmic reticulum one of the cell organelles, exists as a membranous network that extends from outer membrane of nucleus to the plasma membrane making a connection between them. Which of the following statements is not related to the endoplasmic reticulum?

a) It behaves as transport channel for proteins between nucleus and cytoplasm.
b) It transports materials between various regions in cytoplasm.
c) It can be the site of energy generation.
d) It can be the site of some biochemical activities of the cell.

9. Golgi bodies help in

a) excretion of steroids
b) storage and secretion
c) translation
d) transcription

10. The nucleus controls all the activities of the cell and acts as a site of DNA material and protein synthesis. It is composed of some components which all together give the nucleus its functionality. Here is shown a figure of nucleus with some of its components labeled as A, B, C and D. Can you name these components correctly?

a) A – Nucleolus; B – Chromatin; C – Nucleoplasm; D – Nuclear membrane
b) A – Nucleus; B – Chromatin; C – Nuclear membrane; D – Nucleoplasm
c) A – Nucleolus; B – Chromatin; C – Nuclear membrane; D – Nucleoplasm
d) A – Nucleolus; B – Chromatin; C – Nuclear membrane; D – Nuclear wall

11. The process of plasmolysis in plant cell is defined as:

a) Breakdown of plasma membrane in hypotonic solution.
b) Shrinkage of cytoplasm in hypertonic medium.
c) Shrinkage of Nucleoplasm.
d) None of these.

12. Mitochondria are the sites of respiration in the cell. They oxidize carbohydrates and fats present in the cell to produce carbon dioxide, water and a lot of energy. The energy so released is stored in the form of ATP molecules. Since mitochondria in the cell are used to synthesize energy so, they are also called:

a) Energy currency of the cell
b) Energy generator of the cell
c) Kitchen of the cell
d) Power house of the cell

13. Cell is the structural and functional unit of life. The word cell is derived from the Latin word ‘cellula’ which means “a little room”. Can you name the scientist who coined the term cell?

a) Anton Von Leeuwenhoek
b) Robert Brown
c) Robert Hooke
d) Ernst Haeckel

14. In a test, a teacher collected the answers written by four students as the definition of osmosis as given below. Read carefully and select the correct one.

a) Movement of solvent molecules from higher concentration to lower of solution through a permeable membrane.
b) Movement of solute molecules from lower concentration to higher concentration of solution through a semipermeable membrane.
c) Movement of water molecules from a region of higher concentration to a region of lower concentration through a semipermeable membrane.
d) Movement of solvent molecules from its higher concentration to lower concentration.

15. Among the following statements which one is incorrect?

a) Golgi apparatus is involved with formation of lysosomes.
b) Nucleus, mitochondria and plastid have DNA, hence they are able to make their own structural proteins.
c) Lysosomes are called the suicide bags as they eat up their own cells.
d) Cytoplasm is called known as protoplasm.

16. Anjali wanted to eat rice and kidney bean (rajmah). She requested her mother to cook the same on next day. At night her mother took a cup of kidney beans and put them in a container having some water and the kept the container covered overnight. Next day it was observed that the kidney beans got swollen and were ready to be cooked. What is this phenomenon due to which kidney beans got swollen is known as?

a) Only (iii)
b) Both (i) and (iii)
c) Both (i) and (iv)
d) Only (i)

17. A vacuole is a space or cavity within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid. They are a kind of storage sacs that are very large sized in plant cell as compared to that in the animal cell.

Which among the following is not a function of the vacuole?

a) They help to store the toxic metabolic by-products of the plant cell.
b) They provide turgidity and rigidity to the plant cell.
c) They help to maintain the osmotic pressure in the cell.
d) They help the plant in its growth by the process of cell division.

18. The proteins and lipids, essential for building the cell membrane, are manufactured by:

a) Endoplasmic reticulum
b) Golgi apparatus
c) Mitochondria
d) Vacuoles

19. Colourless plastids are known as

a) Chromoplasts
b) Leucoplasts
c) Chloroplasts
d) Protoplasts

20. The barrier between the protoplasm and the outer environment in an animal cell is

a) Cell wall
b) Plasma membrane
c) Nuclear membrane
d) Cytoplasm

21. Ribosomes are the site of

a) Photosynthesis
b) Respiration
c) Protein synthesis
d) Fat synthesis

22. Which of the following organelle(s) has/have double membrane?

a) Chloroplast
b) Ribosome
c) Lysosome
d) Mitochondria

23. The infoldings of the inner membrane of mitochondria are known as

a) Stroma
b) Grana
c) Cristae
d) Oxysomes

24. Cellular respiration is related to __(i)____ as ____(ii)____ is related to chloroplasts.

a) (i)-Mitochondria,(ii)-Light
b) (i)-Mitochondria,(ii)-Photosynthesis
c) (i)-Chloroplast,(ii)-Light
d) (i)-Mitochondria,(ii)-nucleus

25. Raisins soaked in high concentrated solution of sugar ____i_____. The process involved is known as ___ii____.

a) i- shrinks, ii- endosmosis
b) i- swells, ii- Exosmosis
c) i- shrinks, ii- exosmosis
d) i- swells, ii- endosmosis

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