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The Fundamental Unit of Life

Science, IX, Biology, Fundamental Units of Life

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following is not a eukaryotic organism?

  1. Bread yeast
  2. Fungi
  3. Algae
  4. Bacteria
  5. Rhizaria
Question 2 Multiple Choice (Single Answer)

Which of the following scientists discovered the nucleus in the cell?

  1. Robert Brown
  2. Leeuwenhoek
  3. Robert Hooke
  4. Marcello Malpighi
  5. Rudolf Virchow
Question 3 Multiple Choice (Single Answer)

Which of the following is a DNA molecule that also regulates all the functions of the cell?

  1. Chromoplast
  2. Cytoplasm
  3. Vacuole
  4. Nucleoid
  5. Cytosol
Question 4 Multiple Choice (Single Answer)

All plants and animals are composed of cells. Who proposed this cell theory for the first time?

  1. Robert Hooke and Robert Brown
  2. Leeuwenhoek and J. E Purkinje
  3. M. Schleiden and T. Schwann
  4. J. E. Purkinje and M. Schleiden
  5. Robert Hooke and T. Schwann
Question 5 Multiple Choice (Single Answer)

Which of the following statements is/are correct?
(a) The cytoplasm supports and protects the cell organelles that perform different metabolic functions.
(b) The Golgi apparatus consists of stacks of flattened membrane-bound sacs or vesicles, these stacks are called cristae.
(c) Animal cells are small, have no cell wall, and have small vacuoles.

  1. only a
  2. only b
  3. only c
  4. both a and c
  5. a, b and c
Question 6 Multiple Choice (Single Answer)

Which of the following is the main constituent of the cell wall?

  1. Cytoplasm
  2. Protoplasm
  3. Cytosol
  4. Lysosome
  5. Cellulose
Question 7 Multiple Choice (Single Answer)

Which of the following is/are the correct statement(s)?
(a) All cells change their shape frequently.
(b) Flagella are responsible for motility.
(c) Prokaryotic DNA is bounded by a nuclear membrane.

  1. a only
  2. b only
  3. c only
  4. both a and b
  5. both b and c
Question 8 Multiple Choice (Single Answer)

What is endocytosis?

  1. It is a process in which a substance gains entry into a cell without passing through the cell membrane.
  2. It is a process of passage of liquid from its region of higher concentration through a semipermeable membrane to a region of low concentration.
  3. It is the movement of oxygen inside a cell from outside the cell.
  4. It is a process of cellular secretion or excretion in which substances contained in vesicles are discharged from the cell.
  5. It is the shrinkage or contraction of the protoplasm away from the wall of a living plant or bacterial cell.
Question 9 Multiple Choice (Single Answer)

Which of the following is an incorrect statement?

  1. Plasmolysis is the shrinking of the cell away from the cell wall.
  2. Cytoplasm is the fluid living content between the plasma membrane and the nucleus.
  3. Some gases can move across the cell membrane by a process called diffusion.
  4. If the medium has exactly the same water concentration as the cell, there will be no net movement of water across the cell membrane.
  5. The nucleus has a multi-layered covering called nuclear membrane.
Question 10 Multiple Choice (Single Answer)

Which of the following is/are correctly matched?
(a) Kitchen of the cell - Chloroplast
(b) Internal transport system - Golgi complex
(c) Power house of the cell - Nucleus

  1. a only
  2. b only
  3. c only
  4. both a and b
  5. both b and c
Question 11 Multiple Choice (Single Answer)

Given below are some functions of cell organelles. Which of these is the function of the inner membrane of mitochondria?

  1. Plays a central role in cellular reproduction
  2. Contains DNA on which genes are present
  3. Site of cellular respiration
  4. The protein synthesizing site of the cell
  5. Storage units in cells
Question 12 Multiple Choice (Single Answer)

Which of the following cell organelles has the given properties?

Directions: Read these properties carefully and answer the question that follows.
  
1. Found in plant cells only
2. Double membrane bounded structures
3. Do not have cristae but have extra nuclear DNA

  1. Mitochondria
  2. Cytoplasm
  3. Cytosol
  4. Protoplasm
  5. Plastids
Question 13 Multiple Choice (Single Answer)

Which of the following statements is incorrect?

  1. The nucleus contains cytoplasms, which are visible as rod-shaped structures, only when the cell is about to divide.
  2. The nuclear membrane has pores, which allow the transfer of material from inside the nucleus to outside.
  3. The functional segments of DNA are called genes.
  4. Rough endoplasmic reticulum has ribosomes on it.
  5. Viruses lack any membranes, and hence do not show characteristics of life until they enter a living body.
Question 14 Multiple Choice (Single Answer)

Which of the following organelles is the site for centrioles?

  1. In centrosomes of plant cell only.
  2. In centrosomes of animal cell only.
  3. In centrosomes of plant and animal cells.
  4. In cytoplasm of plant cell only.
  5. In cytoplasm of animal cell only.
Question 15 Multiple Choice (Single Answer)

Which of the following organelles make the endoplasmic reticulum rough?

  1. Ribosomes
  2. Lysosomes
  3. Vacuoles
  4. Cytoplasm
  5. Cytosol
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