Biology Quiz Questions and Answers

1

What is the primary cause of the current biodiversity loss?

▼

A

Volcanic eruptions

B

Human activity

C

Lunar cycles

D

Tidal waves

2

Which term describes the total variety of life on Earth?

▼

A

Biomass

B

Biosphere

C

Ecosystem

D

Biodiversity

3

What happens when a species is completely gone from Earth?

▼

A

Migration

B

Evolution

C

Extinction

D

Adaptation

4

Which of these is a major driver of habitat loss?

▼

A

Wind patterns

B

Cloud formation

C

Deforestation

D

Ocean currents

5

What is a main factor contributing to the sixth mass extinction?

▼

A

Increased rainfall

B

Solar eclipses

C

Magnetic shifts

D

Global warming

6

Pollution in the oceans is mostly caused by which material?

▼

A

Plastic

B

Sand

C

Seaweed

D

Salt

7

Which group of animals is currently at high risk of extinction?

▼

A

Garden insects

B

Pigeons

C

Domesticated cats

D

Amphibians

8

What is the study of interactions between living organisms?

▼

A

Geology

B

Physics

C

Ecology

D

Chemistry

9

What do we call the area where an animal naturally lives?

▼

A

Garage

B

Factory

C

Habitat

D

Highway

10

How does poaching affect biodiversity?

▼

A

Increases oxygen

B

Cleans water

C

Reduces populations

D

Improves soil

11

Which gas is a major contributor to climate change?

▼

A

Carbon dioxide

B

Neon

C

Argon

D

Helium

12

What is a 'hotspot' in conservation biology?

▼

A

High species diversity

B

A city center

C

A desert area

D

A volcanic crater

13

Which practice helps protect endangered species?

▼

A

Deforestation

B

Conservation

C

Urbanization

D

Industrialization

14

What is an invasive species?

▼

A

Local bird

B

Hidden bacteria

C

Non-native species

D

Native plant

15

What is the main role of a protected nature reserve?

▼

A

Start mining

B

Build roads

C

Save habitats

D

Allow hunting

16

What is the shape of the DNA molecule?

▼

A

Flat square

B

Solid sphere

C

Double helix

D

Pyramid

17

Which scientist used X-ray diffraction to study DNA?

▼

A

Galileo

B

Rosalind Franklin

C

Isaac Newton

D

Albert Einstein

18

Who are the famous duo credited with the DNA model?

▼

A

Lewis and Clark

B

Smith and Jones

C

Hall and Oates

D

Watson and Crick

19

What does DNA carry in living organisms?

▼

A

Water

B

Genetic info

C

Sugar

D

Heat

20

Which substance is the building block of DNA?

▼

A

Plastic

B

Nucleotides

C

Gold

D

Iron

21

Where is DNA located in a cell?

▼

A

Nucleus

B

Air

C

Surface

D

Water

22

What is the abbreviation for DNA?

▼

A

Double nuclear array

B

Deoxyribonucleic acid

C

Direct natural atom

D

Deep nerve agent

23

What was Rosalind Franklin's famous image called?

▼

A

Image X

B

Slide 99

C

Photo 51

D

Picture 10

24

Which base pairs with Adenine in DNA?

▼

A

Salt

B

Thymine

C

Metal

D

Sugar

25

DNA determines an organism's what?

▼

A

Age

B

Weight

C

Name

D

Traits

26

What year was the double helix model proposed?

▼

A

1953

B

1800

C

1990

D

2020

27

Who shared the Nobel Prize for the DNA discovery?

▼

A

Darwin

B

Franklin

C

Watson and Crick

D

Mendel

28

What holds the two strands of DNA together?

▼

A

Tape

B

Glue

C

Hydrogen bonds

D

Steel wire

29

DNA is found in almost every what?

▼

A

Stone

B

Living cell

C

Metal

D

Cloud

30

The discovery of DNA started a revolution in what?

▼

A

Painting

B

Cooking

C

Genetics

D

Driving

31

What is the 24-hour cycle of our body called?

▼

A

Weekly cycle

B

Seasonal shift

C

Circadian rhythm

D

Lunar phase

32

What is the main external cue for our biological clock?

▼

A

Weight

B

Sound

C

Height

D

Light

33

Which hormone helps you fall asleep?

▼

A

Sugar

B

Salt

C

Insulin

D

Melatonin

34

What happens when you travel across time zones?

▼

A

Hunger

B

Flu

C

Growth

D

Jet lag

35

What is the primary function of sleep?

▼

A

Running

B

Restoration

C

Talking

D

Eating

36

Which brain region controls the sleep cycle?

▼

A

Kidney

B

Liver

C

Hypothalamus

D

Stomach

37

What is the ideal amount of sleep for an adult?

▼

A

20 hours

B

1-2 hours

C

0 hours

D

7-9 hours

38

Blue light from screens affects which hormone?

▼

A

Adrenaline

B

Estrogen

C

Calcium

D

Melatonin

39

What happens to your body temperature while you sleep?

▼

A

Boils

B

Increases

C

Decreases

D

Stays same

40

What is REM sleep known for?

▼

A

Running

B

Walking

C

Digestion

D

Dreaming

Biology Quiz Questions and Answers

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