Biology Mock 11

Question 1

What is the basic unit of life?

Answer 1

Cell

Question 2

True or False: DNA stands for Deoxyribonucleic Acid.

Answer 2

True

Question 3

Fill in the blank: The process by which green plants make their own food is called ______.

Answer 3

Photosynthesis

Question 4

What is the function of the mitochondria?

Answer 4

To produce energy in the form of ATP.

Question 5

Which organelle is responsible for protein synthesis?

Answer 5

Ribosome

Question 6

Multiple Choice: Which of the following is a type of cell division? A) Mitosis B) Photosynthesis C) Respiration

Answer 6

A) Mitosis

Question 7

What is a gene?

Answer 7

A segment of DNA that codes for a protein.

Question 8

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

Answer 8

True

Question 9

What is the role of enzymes in biological reactions?

Answer 9

To speed up the reactions by lowering the activation energy.

Question 10

Fill in the blank: The liquid part of the cell is called ______.

Answer 10

Cytoplasm

Question 11

What is the primary function of the cell membrane?

Answer 11

To control the movement of substances in and out of the cell.

Question 12

Multiple Choice: Which process occurs in the chloroplasts? A) Cellular respiration B) Photosynthesis C) Protein synthesis

Answer 12

B) Photosynthesis

Question 13

What is the structure of DNA?

Answer 13

Double helix

Question 14

True or False: Prokaryotic cells have a nucleus.

Answer 14

False

Question 15

What do we call the physical expression of a gene?

Answer 15

Phenotype

Question 16

Fill in the blank: The ______ is the powerhouse of the cell.

Answer 16

Mitochondria

Question 17

What is the purpose of meiosis?

Answer 17

To produce gametes for sexual reproduction.

Question 18

Multiple Choice: What is the main product of photosynthesis? A) Oxygen B) Carbon dioxide C) Glucose

Answer 18

C) Glucose

Question 19

What is homeostasis?

Answer 19

The maintenance of a stable internal environment in an organism.

Question 20

True or False: Ribosomes are found only in eukaryotic cells.

Answer 20

False

Question 21

What is the function of the nucleus?

Answer 21

To store genetic information and control cell activities.

Question 22

Fill in the blank: The ______ is a rigid structure that provides support to plant cells.

Answer 22

Cell wall

Question 23

What is the role of chlorophyll in photosynthesis?

Answer 23

To absorb light energy.

Question 24

Multiple Choice: Which of the following is NOT a macromolecule? A) Protein B) Lipid C) Water

Answer 24

C) Water

Question 25

What is a mutation?

Answer 25

A change in the DNA sequence.

Question 26

True or False: The sequence of amino acids determines the structure and function of a protein.

Answer 26

True

Question 27

What are the building blocks of proteins?

Answer 27

Amino acids

Question 28

Fill in the blank: The ______ system is responsible for transporting oxygen in the body.

Answer 28

Circulatory

Question 29

What is the role of the large intestine?

Answer 29

To absorb water and form feces.

Question 30

Multiple Choice: Which organ is primarily responsible for detoxifying harmful substances? A) Heart B) Liver C) Kidney

Answer 30

B) Liver

Question 31

What is the main function of red blood cells?

Answer 31

To transport oxygen throughout the body.

Question 32

True or False: Vaccines work by stimulating the immune system to recognize and fight pathogens.

Answer 32

True

Question 33

What is an ecosystem?

Answer 33

A community of living organisms and their physical environment interacting as a system.

Question 34

Fill in the blank: The ______ cycle describes the movement of water through the environment.

Answer 34

Water

Question 35

Multiple Choice: Which type of organism can produce its own food? A) Herbivore B) Carnivore C) Autotroph

Answer 35

C) Autotroph

Question 36

What is biodiversity?

Answer 36

The variety of life in a particular habitat or ecosystem.

Question 37

True or False: Invasive species can disrupt local ecosystems.

Answer 37

True

Question 38

What is the greenhouse effect?

Answer 38

The trapping of heat in the Earth's atmosphere by greenhouse gases.

Question 39

Fill in the blank: The ______ is the basic unit of heredity.

Answer 39

Gene

Question 40

Multiple Choice: Which of the following is a greenhouse gas? A) Nitrogen B) Oxygen C) Carbon dioxide

Answer 40

C) Carbon dioxide

Question 41

What is cellular respiration?

Answer 41

The process by which cells convert glucose and oxygen into energy, carbon dioxide, and water.

Question 42

True or False: All cells undergo cellular respiration.

Answer 42

True

Question 43

What is the primary role of the immune system?

Answer 43

To defend the body against pathogens.

Question 44

Fill in the blank: The ______ is a structure in the cell that contains the genetic material.

Answer 44

Nucleus

Question 45

Multiple Choice: Which part of the brain is responsible for balance and coordination? A) Cerebrum B) Cerebellum C) Brainstem

Answer 45

B) Cerebellum

Question 46

What is the purpose of the scientific method?

Answer 46

To systematically investigate phenomena and acquire new knowledge.

Question 47

True or False: A hypothesis is a testable statement.

Answer 47

True