Question 1

Which of the following structures is found only in prokaryotic cells and is used for movement?

Accepted Answer

Flagella

Question 2

What is the primary function of the cell wall in plants?

Accepted Answer

Provides structural support and protection

Question 3

Which macromolecule is described as a sequence of amino acids?

Accepted Answer

Protein

Question 4

What is the role of phospholipids in the cell membrane?

Accepted Answer

They form the bilayer that acts as a barrier to permeability

Question 5

Which organelle is responsible for packaging and secreting proteins in eukaryotic cells?

Accepted Answer

Golgi apparatus

Question 6

Which of the following is a membrane-bound organelle involved in cell division (mitosis and meiosis)?

Accepted Answer

Nucleus

Question 7

What is the function of cytoplasmic fibers inside the cell?

Accepted Answer

They help support the cell's shape

Question 8

Which structure is described as a jelly-like fluid that fills the cell?

Accepted Answer

Cytoplasm

Question 9

Which of the following is NOT a function of the cell membrane?

Accepted Answer

Synthesizing proteins

Question 10

Which of the following statements about eukaryotic cells is correct?

Accepted Answer

They contain membrane-bound organelles

Question 11

A scientist discovers a cell with a cell wall made of chitin. Which type of organism is this cell most likely from?

Accepted Answer

Fungus

Question 12

Which of the following best describes the sequence of amino acids in a protein?

Accepted Answer

Primary structure

Question 13

Which cell structure is responsible for external support and protection in plants?

Accepted Answer

Cell wall

Question 14

Which of the following is a correct formula for the surface area of a sphere, which can be used to estimate the surface area of a cell?

Accepted Answer

$$A = 4 \pi r^2$

Question 15

If a cell has a diameter of $$10 \mu m$$, what is its approximate volume assuming it is spherical? (Use $$V = \frac{4}{3} \pi r^3$)

Accepted Answer

$$523.6 \mu m^3$

Question 16

Which of the following is a function of the cytoplasm?

Accepted Answer

Suspends organelles and provides a medium for chemical reactions

Question 17

Which of the following is true about chromosomes in eukaryotic cells?

Accepted Answer

They are membrane-bound structures found in the nucleus

Question 18

Which process involves the division of chromosomes during cell division?

Accepted Answer

Mitosis and meiosis

Question 19

Which of the following is NOT a characteristic of prokaryotic cells?

Accepted Answer

Presence of membrane-bound organelles

Question 20

Which of the following best explains why the cell membrane is selectively permeable?

Accepted Answer

It is composed of a phospholipid bilayer with embedded proteins

Cell Structure and Function: Key Components and Their Roles

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