Flash cards on combined biology aqa gcse

Question 1

What is the basic unit of life?

Answer 1

Cell

Question 2

True or False: DNA is made up of amino acids.

Answer 2

False

Question 3

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

Answer 3

Photosynthesis

Question 4

What is the function of the ribosomes?

Answer 4

Protein synthesis

Question 5

Which organelle is responsible for energy production?

Answer 5

Mitochondria

Question 6

Multiple Choice: Which of the following is not a type of RNA? A) mRNA B) tRNA C) rRNA D) dRNA

Answer 6

D) dRNA

Question 7

What is the genetic material found in all living organisms?

Answer 7

DNA

Question 8

True or False: All cells have a nucleus.

Answer 8

False

Question 9

Fill in the blank: The __________ is the control center of the cell.

Answer 9

Nucleus

Question 10

What type of bond holds the two strands of DNA together?

Answer 10

Hydrogen bonds

Question 11

Multiple Choice: What is the primary function of the chloroplast? A) Respiration B) Photosynthesis C) Digestion D) Protein synthesis

Answer 11

B) Photosynthesis

Question 12

What is the name of the process by which cells divide?

Answer 12

Mitosis

Question 13

True or False: Prokaryotic cells have a membrane-bound nucleus.

Answer 13

False

Question 14

Fill in the blank: __________ are the building blocks of proteins.

Answer 14

Amino acids

Question 15

What is the role of enzymes in biological reactions?

Answer 15

To speed up the reactions

Question 16

Multiple Choice: Which of the following is a form of asexual reproduction? A) Binary fission B) Fertilization C) Budding D) Both A and C

Answer 16

D) Both A and C

Question 17

What is homeostasis?

Answer 17

The maintenance of a stable internal environment

Question 18

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

Answer 18

False

Question 19

Fill in the blank: The __________ system is responsible for the transport of nutrients and waste in the body.

Answer 19

Circulatory

Question 20

What type of cell division produces gametes?

Answer 20

Meiosis

Question 21

Multiple Choice: Which of the following is a function of the cell membrane? A) Protection B) Transport C) Communication D) All of the above

Answer 21

D) All of the above

Question 22

What is the role of the small intestine in the digestive system?

Answer 22

Absorption of nutrients

Question 23

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

Answer 23

False

Question 24

Fill in the blank: __________ is the process of breaking down glucose to release energy.

Answer 24

Cellular respiration

Question 25

What is a mutation?

Answer 25

A change in the DNA sequence

Question 26

Multiple Choice: Which of the following is a characteristic of living organisms? A) Growth B) Reproduction C) Response to stimuli D) All of the above

Answer 26

D) All of the above

Question 27

What is the primary pigment involved in photosynthesis?

Answer 27

Chlorophyll

Question 28

True or False: All cells in an organism have the same DNA.

Answer 28

True

Question 29

Fill in the blank: The __________ system is responsible for the body's defense against infection.

Answer 29

Immune

Question 30

What is the function of the kidneys?

Answer 30

To filter waste from the blood

Question 31

Multiple Choice: Which organ is primarily responsible for detoxification? A) Heart B) Liver C) Lungs D) Kidneys

Answer 31

B) Liver

Question 32

What is the role of the pancreas in digestion?

Answer 32

Produces digestive enzymes

Question 33

True or False: The skin is the largest organ of the human body.

Answer 33

True

Question 34

Fill in the blank: __________ are specialized cells that transmit nerve impulses.

Answer 34

Neurons

Question 35

What is the function of red blood cells?

Answer 35

To transport oxygen

Question 36

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

Answer 36

B) Cerebellum

Question 37

What is the role of the endocrine system?

Answer 37

To regulate body functions through hormones

Question 38

True or False: Hormones are produced by glands.

Answer 38

True

Question 39

Fill in the blank: The __________ controls the body's fight or flight response.

Answer 39

Adrenaline

Question 40

What is biodiversity?

Answer 40

The variety of life in the world or in a particular habitat

Question 41

Multiple Choice: What is a keystone species? A) A species that is not abundant B) A species that has a disproportionately large effect on its environment C) Any species in an ecosystem D) A species that is invasive

Answer 41

B) A species that has a disproportionately large effect on its environment

Question 42

What is an ecosystem?

Answer 42

A community of living organisms and their environment

Question 43

True or False: Energy flows through an ecosystem in a one-way stream.

Answer 43

True

Question 44

Fill in the blank: __________ are organisms that produce their own food.

Answer 44

Autotrophs

Question 45

What is the process of nitrogen fixation?

Answer 45

Conversion of nitrogen gas into ammonia by certain bacteria

Question 46

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

Answer 46

C) Plants

Question 47

What is the role of decomposers in an ecosystem?

Answer 47

To break down dead material and recycle nutrients

Question 48

True or False: The carbon cycle involves the movement of carbon through the atmosphere, biosphere, and geosphere.

Answer 48

True

Question 49

Fill in the blank: __________ is the maximum population size that an environment can sustain.

Answer 49

Carrying capacity

Question 50

What is natural selection?

Answer 50

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

Question 51

Multiple Choice: What is the primary cause of extinction? A) Habitat destruction B) Overpopulation C) Climate change D) Pollution

Answer 51

A) Habitat destruction

Question 52

What is the significance of the fossil record?

Answer 52

It provides evidence for evolution and the history of life on Earth

Question 53

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

Answer 53

True

Question 54

Fill in the blank: __________ are inherited traits that help organisms survive in their environment.

Answer 54

Adaptations

Question 55

What is the role of a scientific theory?

Answer 55

To provide a well-substantiated explanation of some aspect of the natural world

Question 56

Multiple Choice: Which of the following is not a characteristic of life? A) Growth B) Response to stimuli C) Ability to reproduce D) Inability to adapt

Answer 56

D) Inability to adapt

Question 57

What is the primary function of the skeletal system?

Answer 57

To provide structure and support to the body

Question 58

True or False: The immune system is responsible for producing hormones.

Answer 58

False

Question 59

Fill in the blank: __________ are the three main types of rocks: igneous, sedimentary, and __________.

Answer 59

Metamorphic

Question 60

What is the role of the integumentary system?

Answer 60

To protect the body and regulate temperature

Question 61

Multiple Choice: Which of the following is a function of the lymphatic system? A) Fluid balance B) Absorption of fats C) Immune response D) All of the above

Answer 61

D) All of the above

Question 62

What is the main purpose of the respiratory system?

Answer 62

To exchange gases between the body and the environment

Question 63

True or False: The diaphragm is a muscle that aids in breathing.

Answer 63

True

Question 64

Fill in the blank: __________ is the study of how living organisms interact with one another and their environment.

Answer 64

Ecology

Question 65

What is the primary role of the digestive system?

Answer 65

To break down food and absorb nutrients

Question 66

Multiple Choice: Which part of the plant is responsible for water absorption? A) Leaves B) Roots C) Stem D) Flowers

Answer 66

B) Roots

Question 67

What is the role of stomata in plants?

Answer 67

To regulate gas exchange

Question 68

True or False: Plants are autotrophs.

Answer 68

True

Question 69

Fill in the blank: __________ is the outermost layer of the skin.

Answer 69

Epidermis

Question 70

What is the function of the myelin sheath?

Answer 70

To insulate nerve fibers and speed up impulse transmission

Question 71

Multiple Choice: Which of the following vitamins is produced when skin is exposed to sunlight? A) Vitamin A B) Vitamin B12 C) Vitamin C D) Vitamin D

Answer 71

D) Vitamin D

Question 72

What is the primary component of the cell membrane?

Answer 72

Phospholipids

Question 73

True or False: All cells have the same organelles.

Answer 73

False

Question 74

Fill in the blank: The __________ is responsible for the regulation of body temperature.

Answer 74

Hypothalamus

Question 75

What is the significance of the cell cycle?

Answer 75

It regulates cell growth and division

Question 76

Multiple Choice: Which stage of the cell cycle involves DNA replication? A) G1 B) S C) G2 D) M

Answer 76

B) S