OCR Gateway A Combined Science B2

Question 1

What is the basic unit of life?

Answer 1

The cell.

Question 2

True or False: Prokaryotic cells have a nucleus.

Answer 2

False.

Question 3

Fill in the blank: The process by which plants convert sunlight into energy is called _______.

Answer 3

photosynthesis.

Question 4

What is the function of the mitochondria?

Answer 4

To produce energy (ATP) through cellular respiration.

Question 5

Which organelle is responsible for protein synthesis?

Answer 5

Ribosome.

Question 6

Multiple Choice: Which of the following is a function of the cell membrane? A) Support B) Protection C) Regulate what enters and exits the cell D) All of the above

Answer 6

D) All of the above.

Question 7

What is the role of chlorophyll in photosynthesis?

Answer 7

To absorb sunlight.

Question 8

True or False: DNA is found in the nucleus of eukaryotic cells.

Answer 8

True.

Question 9

What is the purpose of mitosis?

Answer 9

To produce two identical daughter cells for growth and repair.

Question 10

Fill in the blank: _______ is the process by which cells divide to form gametes.

Answer 10

Meiosis.

Question 11

What is the primary function of the ribosomes?

Answer 11

To synthesize proteins.

Question 12

Multiple Choice: Which of the following is not a type of tissue? A) Epithelial B) Connective C) Neural D) Organ

Answer 12

D) Organ.

Question 13

What is an ecosystem?

Answer 13

A community of living organisms interacting with their environment.

Question 14

True or False: All living organisms require oxygen to survive.

Answer 14

False.

Question 15

What is the term for a group of similar cells that perform a specific function?

Answer 15

Tissue.

Question 16

Fill in the blank: The _______ system is responsible for transporting nutrients and oxygen throughout the body.

Answer 16

circulatory.

Question 17

What is homeostasis?

Answer 17

The maintenance of a stable internal environment in an organism.

Question 18

Multiple Choice: Which of the following is a biotic factor in an ecosystem? A) Temperature B) Water C) Plants D) Soil

Answer 18

C) Plants.

Question 19

What do we call the variety of different species in a given area?

Answer 19

Biodiversity.

Question 20

True or False: Genetic variation is important for the survival of a species.

Answer 20

True.

Question 21

What is the primary purpose of the nervous system?

Answer 21

To coordinate and control the body’s responses to internal and external stimuli.

Question 22

Fill in the blank: The _______ is the part of the brain responsible for regulating vital functions such as heartbeat and breathing.

Answer 22

medulla oblongata.

Question 23

What is the role of enzymes in biological reactions?

Answer 23

To speed up chemical reactions by lowering the activation energy.

Question 24

Multiple Choice: Which of the following is a renewable resource? A) Coal B) Oil C) Solar Energy D) Natural Gas

Answer 24

C) Solar Energy.

Question 25

What is the function of the large intestine?

Answer 25

To absorb water and form waste.

Question 26

True or False: All cells in the body contain the same DNA.

Answer 26

True.

Question 27

What is the primary function of the immune system?

Answer 27

To protect the body against pathogens.