Biology · Science General

Cell Biology and Structure

3,062 Questions

Cell biology focuses on the structure and function of cellular organelles. Key topics include cellular respiration, DNA inheritance, and energy production. These fundamental biology concepts are crucial for medical entrance and state service examinations.

Cell organelles functionsCellular respiration sitesDNA and ribosomesAnimal cell structurePlant cell components

Cell Biology and Structure Questions

Multiple choice

Match the following:

 
a. Mitochondria 1. It is a space in the cytoplasm of a cell, which is enclosed by a membrane and usually contains substances dissolved in water.
b. Chloroplasts 2. They are tiny rod-shaped or spherical organelles, which are found in all the cells.
c. Vacuole 3. They are green colour organelles present in the cytoplasm of plant cells.

  1. a - 1, b - 3, c - 2

  2. a - 3, b - 1, c - 2

  3. a - 3, b - 2, c - 1

  4. a - 2, b - 3, c - 1

  5. a - 2, b - 1, c - 3
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option. Mitochondria are tiny rod-shaped or spherical organelles, which are found in all the cells. Chloroplasts are the green colour organelles present in the cytoplasm of plant cells. Vacuole is a space in the cytoplasm of a cell, which is enclosed by a membrane and usually contains substances dissolved in water.

Multiple choice

Which of the following statements is/are false? a. Nucleus is separated from the cytoplasm by a membrane called nuclear membrane. b. Nucleus contains thread-like structures called the vacuoles. c. Nucleus controls all the activities of cell.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

  5. Only c
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Statement 'b' is a false statement. Thus, it is the correct option. Nucleus contains thread-like structures called chromosomes.

Multiple choice

Which of the following is/are not the property of the cell wall? a. Cell wall gives shape and support to the plant cell. b. Cell wall holds the plant together and gives strength to the plant. c. The tough cell walls, present in the animal cells provides protection to animals.

  1. Only a

  2. Only a and b

  3. Only b and c

  4. Only b

  5. Only c
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The tough cell walls present in the animal cells provides protection to animals, is not a property of cell wall, as  the cell wall is absent. Thus, it is the correct option.

Multiple choice

Which of the following statements is/are false? a. Plant cells have a very small vacuole. b. The function of the vacuole in a cell is to store various substances including waste products of the cell. c. The vacuole is filled with a liquid which contains dissolved sugars and salts.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

  5. Only c
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Statement 'a' is a false statement. Plant cells have a large vacuole. Thus, it is the correct option.

Multiple choice

Which of the following is not a similarity between a plant cell and an animal cell?

  1. Plant cells and animal cells have a cell membrane around them.

  2. Plant cells and animal cells have chloroplast in them.

  3. Plant cells and animal cells have a nucleus.

  4. Plant cells and animal cells have a cytoplasm.

  5. Plant cells and animal cells have mitochondria.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct option, as both plant cells and animal cells do not have chloroplast in them. Only plant cells have chloroplast.

Multiple choice

Which of the following is a plant cell?

  1. Nerve cell

  2. Epidermal cell

  3. Epithelial cell

  4. Red blood cell

  5. White blood cell
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct option, as an epidermal cell is a plant cell.

Multiple choice

Which of the following statements is/are false? a. Different organisms have same number of cells in their bodies. b. The cells in a multicellular organism have many different shapes. c. The cells in a multicellular organism can have many different sizes.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

  5. Only c
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Statement 'a' is  false. Thus, it is the correct option. Different organisms have different number of cells in their bodies.

Multiple choice

Match the following:

 
Bodies Functions in an animal cell
a, Mitochondria 1. To hold air, water and particles of food.
b. Vacuole 2. To carry out all the activities of the life processes.
c. Cytoplasm 3. To carry out respiration for releasing energy from food.

  1. a - 3, b - 1, c - 2

  2. a - 3, b - 2, c - 1

  3. a - 1, b - 3, c - 2

  4. a - 1, b - 2, c - 3

  5. a - 2, b - 1, c - 3
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is the correct option. The function of mitochondria in an animal cell is to carry out respiration, and  releasing energy from food. The function of  a vacuole in an animal cell is to hold air, water and particles of food. The function of  the cytoplasm in an animal cell is to carry out all the activities.

Multiple choice

Which cell organelle contains cristae?

  1. Nucleus

  2. Chloroplast

  3. Ribosomes

  4. Mitochondria
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Each of the partial partitions in a mitochondrion formed by infolding of the inner membrane are called cristae.