Free Printable Bio Final 2025

1.

Ecology is the study of

a)

How rocks form

b)

How organisms interact

c)

How stars move

d)

How weather changes

2.

People who study ecology are called

a)

Botanists

b)

Ecologists

c)

Meteorologists

d)

Geologists

3.

Living things are made of

a)

Atoms

b)

Rocks

c)

Cells

d)

Air

4.

Keeping internal conditions stable is called

a)

Evolution

b)

Homeostasis

c)

Respiration

d)

Organization

5.

Which is a biotic factor

a)

Soil

b)

Sunlight

c)

Wind

d)

Frog

6.

Abiotic factors are

a)

Living

b)

Nonliving

c)

Animals only

d)

Plants only

7.

Dead organisms are considered biotic

a)

Abiotic

b)

Biotic

c)

Neither

d)

Only abiotic after one week

8.

A population is

a)

Different species together

b)

One species in one area

c)

Abiotic factors

d)

The whole Earth

9.

The largest level is the

a)

Community

b)

Ecosystem

c)

Population

d)

Biosphere

10.

A community includes

a)

Only animals

b)

Only plants

c)

All living things

d)

Living and nonliving

11.

Producers make their own

a)

Water

b)

Soil

c)

Food

d)

Air

12.

Consumers must

a)

Make food

b)

Drink sunlight

c)

Eat organisms

d)

Eat plants only

13.

Decomposers

a)

Hunt prey

b)

Break down dead organisms

c)

Do photosynthesis

d)

Live in water

14.

Energy transfer between trophic levels is

a)

$100\%$

b)

$50\%$

c)

$10\%$

d)

$0\%$

15.

Primary consumers eat

a)

Producers

b)

Carnivores

c)

Decomposers

d)

Rocks

16.

A herbivore eats

a)

Meat

b)

Plants

c)

Bones

d)

Dead animals

17.

An apex predator is at the

a)

Bottom

b)

Decomposer

c)

Top

d)

Plant

18.

Most energy is lost as

a)

Heat

b)

Water

c)

Oxygen

d)

Minerals

19.

Removing one species can

a)

Change nothing

b)

Destroy the sun

c)

Unbalance the ecosystem

d)

Turn consumers into producers

20.

Eats at many trophic levels

a)

Producer

b)

Omnivore

c)

Abiotic

d)

Rock

21.

Exponential growth occurs with _______resources

a)

Limited

b)

Poisoned

c)

Unlimited

d)

Dirty resources

22.

Logistic growth levels off due to

a)

Hurricanes

b)

Carrying capacity

c)

Weather

d)

Nitrogen

23.

Carrying capacity is the

a)

Max population supported

b)

Predator number

c)

Plant number

d)

Fastest growth

24.

Slow beginning is the_______ phase

a)

Jump

b)

Lag

c)

End

d)

Decline

25.

Human population grew fast because of the

a)

Space travel

b)

Industrial revolution

c)

Plants died

d)

Oceans rose

26.

“Photo” means

a)

Grow

b)

Light

c)

Water

d)

Air

27.

“Synthesis” means

a)

Destroy

b)

Make

c)

Sleep

d)

Swim

28.

Photosynthesis uses energy from the

a)

Moon

b)

Stars

c)

Sun

d)

Water

29.

Xylem carries

a)

Glucose

b)

Oxygen

c)

Water

d)

CO2

30.

Phloem carries

a)

Water

b)

Glucose

c)

Air

d)

Soil

31.

Carbohydrates are

a)

CHO

b)

CHON

c)

CO2

d)

NaCl

32.

Carbohydrate monomers are

a)

Amino acids

b)

Monosaccharides

c)

Fatty acids

d)

Nucleotides

33.

Lipids are______ in water

a)

Soluble

b)

Insoluble

c)

Plant-only

d)

Animal-only

34.

A triglyceride has

a)

2 fatty acids

b)

3 fatty acids

c)

4 fatty acids

d)

0 fatty acids

35.

Proteins are functional because they are

a)

Small

b)

Same shape

c)

Diverse

d)

Lipids

36.

Nucleic acids store

a)

Energy

b)

Information

c)

Heat

d)

Fat

37.

Nucleic acid monomers are

a)

Amino acids

b)

Monosaccharides

c)

Nucleotides

d)

Fatty acids

38.

In DNA, A pairs with

a)

C

b)

G

c)

T

d)

A

39.

DNA stands for

a)

Deoxyribonucleic acid

b)

Dino-rabbit acid

c)

Double nitrogen acid

d)

Dynamic ribose atom

40.

A two-ring base is a

a)

Pyrimidine

b)

Purine

c)

Protein

d)

Polymer

41.

Evaporation is

a)

Gas to solid

b)

Liquid to gas

c)

Solid to gas

d)

Gas to liquid

42.

Nitrogen fixation makes

a)

Oxygen

b)

Glucose

c)

Ammonium

d)

Carbon

43.

Plants absorb nitrates in

a)

Decomposition

b)

Assimilation

c)

Combustion

d)

Evaporation

44.

Fossil fuel burning releases

a)

CO2

b)

Water

c)

Nitrogen

d)

Protein

45.

Phosphorus builds

a)

Cell membranes

b)

Teeth

c)

Clouds

d)

Soil

46.

DNA shape is a

a)

Circle

b)

Line

c)

Double helix

d)

Square

47.

DNA is copied in

a)

G1

b)

S phase

c)

Mitosis

d)

G0

48.

Nervous system messages are

a)

Water

b)

Electrical

c)

Air

d)

Light

49.

The CNS includes

a)

Brain and spinal cord

b)

Arms and legs

c)

Brain only

d)

Spine only

50.

Negative feedback

a)

Increases stimulus

b)

Reverses stimulus

c)

Never stops

d)

Causes disease

Bio Final 2025

Total questions: 50

Worksheet time: 4hrs 10mins

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