Biology MCQ test

Question 1

What is the basic unit of life?

Answer 1

Cell

Cells are the smallest structural and functional units of living organisms.

Question 2

Define ‘organism’.

Answer 2

An individual living entity

Organisms can be unicellular or multicellular.

Question 3

What process do plants use to convert sunlight into energy?

Answer 3

Photosynthesis

Photosynthesis occurs in chloroplasts and involves converting carbon dioxide and water into glucose and oxygen.

Question 4

Fill in the blank: The ______________ is a membrane-bound structure that contains the genetic material in eukaryotic cells.

Answer 4

Nucleus

Question 5

True or False: All living organisms are made up of cells.

Answer 5

True

This is known as the cell theory.

Question 6

What are the two main types of cells?

Answer 6

Prokaryotic and Eukaryotic

Prokaryotic cells lack a nucleus, while eukaryotic cells have a nucleus.

Question 7

What is the role of ribosomes in a cell?

Answer 7

Protein synthesis

Ribosomes can be found free in the cytoplasm or attached to the endoplasmic reticulum.

Question 8

Fill in the blank: The ___________ is responsible for controlling what enters and exits the cell.

Answer 8

Cell membrane

Question 9

What is the function of mitochondria?

Answer 9

Energy production

Mitochondria are known as the powerhouses of the cell.

Question 10

Define ‘tissue’.

Answer 10

A group of similar cells that perform a specific function

Tissues are organized into organs.

Question 11

What is the primary function of the chloroplast?

Answer 11

Photosynthesis

Chloroplasts contain chlorophyll, which captures light energy.

Question 12

Fill in the blank: The ___________ is a jelly-like substance inside the cell where organelles are found.

Answer 12

Cytoplasm

Question 13

True or False: The cell wall is present in animal cells.

Answer 13

False

Cell walls are found in plant cells, fungi, and some prokaryotes.