Cell Structure and Functions Objective Type Questions

Hi Everyone!! This article will share Cell Structure and Functions Objective Type Questions.

Objective type questions are the questions that need a specific answer. These include multiple-choice, true/false, matching, fill-ups, assertion and reason, etc.  

Every living thing is made up of cells and a cell represents the lowest level off organization at which life can exist. Below are given the objective type questions and answers of this chapter. In one of my previous posts, I have shared Microorganisms – Friend and Foe Questions & Answers so, you can check that post as well.

Cell Structure and Functions Objective Type Questions

Question 1: Choose the correct option:

(a) The structures in the protoplasm wherein proteins are made.

(i) Chlorophyll (ii) Ribosomes (iii) Mitochondria (iv) Chloroplast
Answer: (ii) Ribosomes

(b) A suitable term for the various components of a cell is:

(i) tissue (ii) chromosomes (iii) cell organelles (iv) genes
Answer: (iii) cell organelles

(c) Which of the following equations correctly represents the cytoplasm of the cell?

(i) Protoplasm = cell membrane + nucleus – cytoplasm
(ii) Protoplasm = cytoplasm + nucleus
(iii) Protoplasm = nucleus + cell membrane
(iv) Protoplasm = cell membrane + cytoplasm
Answer: (ii) Protoplasm = cytoplasm + nucleus

(d) Which of the following is not a eukaryotic organism?

(i) Plants (ii) Animals (iii) Fungi (iv) Bacteria
Answer: (iv) Bacteria

(e) Which of the following is true about plastids?

(i) They are found in all eukaryotic cells.
(ii) All plastids contain chlorophyll.
(iii) Plastids are found only in prokaryotic cells.
(iv) Plastids are found only in plant cells.
Answer: (iv) Plastids are found only in plant cells.

(f) Which of the following equations correctly represents the cytoplasm of the cell?

(i) Protoplasm + cell membrane + nucleus = cytoplasm
(ii) Protoplasm – nucleus = cytoplasm
(iii) Protoplasm + nucleus – cell membrane = cytoplasm
(iv) Nucleus – protoplasm + cell membrane = cytoplasm
Answer: (ii) Protoplasm – nucleus = cytoplasm

(g) Which of the following are absent in plant cells?

(i) Centrioles (ii) Ribosomes (iii) Mitochondria (iv) Vacuoles
Answer: (i) Centrioles

(h) The organelle that helps in cell division is

(i) lysosome (ii) ribosome (iii) centrosome (iv) plastids
Answer: (iii) centrosome

(i) Which of the following is not a part of the nucleus?

(i) Ribosomes (ii) Nucleolus (iii) Chromosomes (iv) Genes
Answer: (i) Ribosomes

(j) The living part of the cell including cytoplasm, nucleus and other cell organelles is called the

(i) plastids (ii) protoplasm (iii) cell wall (iv) vacuole
Answer: (ii) protoplasm

(k) Neha observed a cell under a microscope. She found that the cell has a cell wall but no distinct nucleus. The cell that she observed is:

(i) a plant cell (ii) an animal cell (iii) a nerve cell (iv) a bacterial cell
Answer: (iv) a bacterial cell

Must Read: Cell Structure and Functions Questions & Answers

Question 2: Fill in the blanks:

(a) Ribosomes are structures in the protoplasm where proteins are made.
(b) Chromosomes carry genes which are responsible for transfer of characters from the parents to the offspring.
(c) Nuclear membrane separates the nucleus from the cytoplasm.
(d) Mitochondria are responsible for the synthesis of adenosine triphosphate or ATP.
(e) Green coloured plastids are called chloroplasts.
(f) Lysosomes are known as the suicidal bags of the cell.
(g) Mitochondria are considered as the power house of the cell.
(h) A semi-fluid substance that fills up the space between the cell membrane and the nucleus is called cytoplasm.
(i) Vacuoles help in storing various substances such as food, enzymes and waste products for a short period of time.

Cell Structure and Functions Objective Type Questions

Question 3: State whether the following statements are True (T) or False (F).

(a) The basic living unit of an organism is an organ – False
(b) Lysosomes are also known as suicidal bags – True
(c) Mitochondria are associated with protein synthesis – False
(d) Prokaryotic cells lack a well organised nucleus – True
(e) Nucleolus contains a thread-like network of chromatins – True
(f) Rudolf Virchow stated that every cell arises from pre-existing cells – True
(g) A eukaryotic cell always contains one mitochondrion per cell – False
(h) Protoplasm is the jelly-like substance present between the cell membrane and the nucleus – False

Question 4: Answer the following questions in one word.

(a) Organelles that help in digestion of foreign bodies and worn out cell parts – Lysosomes
(b) Name the thread like structure protruding from the cell membrane of a prokaryotic cell which helps it in movement – Flagellum
(c) A cell that lacks a proper nucleus and organelles – Prokaryotic cell
(d) Name the plastids containing chlorophyll – Chloroplast
(e) A network of membranous tubes that connect the cell membrane with the nuclear membrane – Endoplasmic Reticulum
(f) The DNA segments that carry hereditary information from parents to offspring – Genes

Question 5: Match the following.

Column AColumn B
a. Mitochondriai. Lacks nucleus
b. Prokaryotic cellii. Play an important role in cell division
c. Plasma membraneiii. Small double membraned
d. Centrioles and centromeresiv. Flexible boundary of a cell
Answer: a.-iii, b.-i, c.-iv, d.-ii

Cell Structure and Functions Objective Type Questions

Question 6: Name the following:

(a) Two unicellular organisms
Answer: Bacteria and amoeba

(b) Two parts of protoplasm in an eukaryotic cell
Answer: Cytoplasm and nucleus

(c) Two multicellular organisms
Answer: Man, horse and lion

(d) The structural and functional unit of life
Answer: Cell

(e) Two examples of prokaryotes
Answer: Bacteria and blue green algae

Question 7: Who am I?

S. NoCluesAnswer
1.I am the flexible boundary of a cell that separates a cell from its surroundingscell membrane or plasma membrane
2.I separate the nucleus from cytoplasmnuclear membrane
3.I am the powerhouse of a cellmitochondria
4.I am a green coloured pigment present in plantschlorophyll
5.I am unicellular irregularly shaped organismamoeba
6.I am the largest living cellostrich egg

Question 8: Assertion-Reason type questions:

In the following questions, two statements are given- one labelled Assertion (A) and the other labelled Reason (R). Read the statements carefully and choose the correct alternative (A), (B), (C) and (D) as given below.
(A) Both A and R are true and R is the correct explanation of the assertion.
(B) Both A and R are true but R is not the correct explanation of the assertion.
(C) A is true but R is false.
(D) A is false but R is true.

1. Assertion: Plant cells have a cell wall.
Reason: The cell wall provides protection against variation in temperature, high wind speed, and atmospheric moisture.

Answer: (A)

2. Assertion: Red blood cells are round and concave.
Reason: They protect us from foreign invaders like bacteria, viruses, etc.

Answer: (C)

So, these were Cell Structure and Functions Objective Type Questions.