Biology ยท Science General

Cell Biology and Structure

3,221 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

Which of the following is a type of plant cell?

  1. Parenchyma cell

  2. Collenchyma cell

  3. Sclerenchyma cell

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Plant cells are the basic unit of structure and function in plants. Parenchyma cells are a type of cell that is found in many parts of the plant and performs a variety of functions, including photosynthesis, storage, and support. Collenchyma cells are a type of cell that provides support for the plant, and sclerenchyma cells are a type of cell that provides strength for the plant.

Multiple choice

Which type of stem cell can differentiate into any cell type in the body?

  1. Embryonic stem cells

  2. Adult stem cells

  3. Induced pluripotent stem cells

  4. Mesenchymal stem cells
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Embryonic stem cells are pluripotent, meaning they can differentiate into any cell type in the body.

Multiple choice

Where does the electron transport chain take place in cells?

  1. Cytosol

  2. Mitochondrial Matrix

  3. Mitochondrial Inner Membrane

  4. Nucleus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The electron transport chain is a series of protein complexes located in the inner mitochondrial membrane. It transfers electrons from NADH and FADH2 to oxygen, generating a proton gradient used for ATP production.

Multiple choice

What is the function of the Golgi apparatus?

  1. Protein synthesis

  2. Lipid synthesis

  3. Carbohydrate synthesis

  4. Packaging and secretion of proteins
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Golgi apparatus is responsible for packaging and secreting proteins. It modifies proteins and lipids, and packages them into vesicles for transport to other parts of the cell or for secretion.

Multiple choice

Which of the following is not a type of tissue?

  1. Epithelial tissue

  2. Connective tissue

  3. Muscle tissue

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

Nervous tissue is not a type of tissue. The four main types of tissue are epithelial tissue, connective tissue, muscle tissue, and nervous tissue.

Multiple choice

What is the function of the cell wall in a bacterial cell?

  1. Protection

  2. Transport

  3. Energy production

  4. Cell division
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The cell wall provides protection and structural support to the bacterial cell.

Multiple choice

What is the role of the glycoprotein in a virus?

  1. Attachment

  2. Replication

  3. Assembly

  4. Release
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The glycoprotein is a protein that helps the virus attach to host cells.

Multiple choice

What is a nucleus?

  1. The organelle that contains the cell's DNA

  2. The organelle that contains the cell's RNA

  3. The organelle that contains the cell's protein

  4. The organelle that contains the cell's lipids
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The nucleus is the organelle that contains the cell's DNA.

Multiple choice

What is a mitochondrion?

  1. The organelle that produces the cell's energy

  2. The organelle that produces the cell's RNA

  3. The organelle that produces the cell's protein

  4. The organelle that produces the cell's lipids
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The mitochondrion is the organelle that produces the cell's energy.

Multiple choice

What is a ribosome?

  1. The organelle that assembles proteins

  2. The organelle that assembles RNA

  3. The organelle that assembles DNA

  4. The organelle that assembles lipids
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The ribosome is the organelle that assembles proteins.

Multiple choice

What is the basic unit of life?

  1. Cell

  2. Tissue

  3. Organ

  4. Organ system
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The cell is the basic unit of life because it is the smallest unit that can carry out all of the functions of life.

Multiple choice

What is the function of the nucleus in a cell?

  1. Controls the cell's activities

  2. Stores the cell's DNA

  3. Produces ribosomes

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The nucleus controls the cell's activities, stores the cell's DNA, and produces ribosomes.

Multiple choice

What is the function of the mitochondria in a cell?

  1. Produces energy

  2. Stores the cell's DNA

  3. Produces ribosomes

  4. Controls the cell's activities
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The mitochondria is the powerhouse of the cell and produces energy.

Multiple choice

What is the function of the Golgi apparatus in a cell?

  1. Packages and distributes proteins

  2. Stores the cell's DNA

  3. Produces ribosomes

  4. Controls the cell's activities
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Golgi apparatus packages and distributes proteins.