gcse biology combined science

Question 1

What is the basic unit of life?

Answer 1

Cell

Question 2

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

Answer 2

True

Question 3

What process do plants use to convert sunlight into energy?

Answer 3

Photosynthesis

Question 4

Fill in the blank: The formula for photosynthesis is ___ + ___ → ___ + ___

Answer 4

Carbon dioxide + Water → Glucose + Oxygen

Question 5

What is the role of mitochondria in a cell?

Answer 5

They produce energy through respiration.

Question 6

Multiple choice: Which organelle is known as the powerhouse of the cell? A) Nucleus B) Ribosome C) Mitochondria D) Golgi apparatus

Answer 6

C) Mitochondria

Question 7

What is the function of ribosomes?

Answer 7

Protein synthesis

Question 8

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

Answer 8

True

Question 9

What are the two main types of cells?

Answer 9

Prokaryotic and Eukaryotic

Question 10

Fill in the blank: The process of cell division in somatic cells is called ___

Answer 10

Mitosis

Question 11

What is the main function of the cell membrane?

Answer 11

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

Question 12

Multiple choice: What is the genetic material in living organisms? A) RNA B) Protein C) DNA D) Lipids

Answer 12

C) DNA

Question 13

What is the function of chloroplasts?

Answer 13

To conduct photosynthesis in plant cells.

Question 14

True or False: The heart is part of the circulatory system.

Answer 14

True

Question 15

What is the function of red blood cells?

Answer 15

To transport oxygen around the body.

Question 16

Fill in the blank: The main organ for digestion is the ___

Answer 16

Stomach

Question 17

What is homeostasis?

Answer 17

The maintenance of a stable internal environment in an organism.

Question 18

Multiple choice: Which part of the brain controls balance? A) Cerebellum B) Cerebrum C) Brainstem D) Hippocampus

Answer 18

A) Cerebellum

Question 19

What is the role of enzymes in biological reactions?

Answer 19

To speed up the reactions by lowering activation energy.

Question 20

True or False: Enzymes are consumed in the reactions they catalyze.

Answer 20

False

Question 21

Fill in the blank: The pH scale ranges from ___ to ___

Answer 21

0 to 14

Question 22

What is osmosis?

Answer 22

The movement of water molecules through a semi-permeable membrane from a region of low solute concentration to high solute concentration.

Question 23

Multiple choice: Which of the following is NOT a macromolecule? A) Carbohydrates B) Proteins C) Vitamins D) Lipids

Answer 23

C) Vitamins

Question 24

What is the primary function of carbohydrates?

Answer 24

To provide energy.

Question 25

True or False: Proteins are made up of amino acids.

Answer 25

True

Question 26

Fill in the blank: The process of converting glucose into energy in the absence of oxygen is called ___

Answer 26

Anaerobic respiration

Question 27

What is the role of the immune system?

Answer 27

To defend the body against pathogens.

Question 28

Multiple choice: Which type of blood cell is responsible for fighting infection? A) Platelets B) Red blood cells C) White blood cells D) Plasma

Answer 28

C) White blood cells

Question 29

What is the function of the kidneys?

Answer 29

To filter waste products from the blood and produce urine.

Question 30

True or False: The small intestine is where most nutrient absorption occurs.

Answer 30

True

Question 31

Fill in the blank: The basic building blocks of proteins are ___

Answer 31

Amino acids

Question 32

What is the main purpose of the respiratory system?

Answer 32

To facilitate gas exchange, specifically oxygen and carbon dioxide.

Question 33

Multiple choice: Which structure in the respiratory system is responsible for gas exchange? A) Trachea B) Bronchi C) Alveoli D) Lungs

Answer 33

C) Alveoli

Question 34

What is a gene?

Answer 34

A segment of DNA that codes for a specific trait.

Question 35

True or False: Traits are inherited from parents to offspring through genes.

Answer 35

True

Question 36

Fill in the blank: The observable characteristics of an organism are referred to as its ___

Answer 36

Phenotype

Question 37

What is natural selection?

Answer 37

The process by which organisms better adapted to their environment tend to survive and produce more offspring.

Question 38

Multiple choice: Which of the following is a type of asexual reproduction? A) Budding B) Fertilization C) Pollination D) Copulation

Answer 38

A) Budding

Question 39

What is the role of antibiotics?

Answer 39

To kill or inhibit the growth of bacteria.

Question 40

True or False: Viruses can be treated with antibiotics.

Answer 40

False

Question 41

Fill in the blank: The study of heredity is known as ___

Answer 41

Genetics