Science Exam

Question 1

What is the basic unit of life?

Answer 1

Cell

Question 2

True or False: Plants perform photosynthesis to produce their own food.

Answer 2

True

Question 3

Fill in the blank: The process by which organisms maintain a stable internal environment is called _____.

Answer 3

Homeostasis

Question 4

What are the three states of matter?

Answer 4

Solid, Liquid, Gas

Question 5

Which part of the cell is known as the powerhouse?

Answer 5

Mitochondria

Question 6

What is the chemical formula for water?

Answer 6

H2O

Question 7

Multiple Choice: Which of the following is not a renewable energy source? A) Solar B) Wind C) Coal D) Hydro

Answer 7

C) Coal

Question 8

What is the main function of the roots in plants?

Answer 8

Absorb water and nutrients from the soil

Question 9

True or False: All living organisms reproduce.

Answer 9

True

Question 10

What is the smallest unit of an element?

Answer 10

Atom

Question 11

Fill in the blank: The force that pulls objects toward each other is called _____.

Answer 11

Gravity

Question 12

What is the main gas produced by plants during photosynthesis?

Answer 12

Oxygen

Question 13

Multiple Choice: What is the process by which plants lose water vapor? A) Respiration B) Transpiration C) Evaporation D) Condensation

Answer 13

B) Transpiration

Question 14

What is the primary function of the leaves in a plant?

Answer 14

Photosynthesis

Question 15

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

Answer 15

False

Question 16

Fill in the blank: The building blocks of proteins are called _____.

Answer 16

Amino acids

Question 17

What is the name of the process by which water changes from a liquid to a gas?

Answer 17

Evaporation

Question 18

Multiple Choice: Which of the following organs is responsible for filtering blood? A) Liver B) Kidney C) Heart D) Lung

Answer 18

B) Kidney

Question 19

What is the primary source of energy for the Earth?

Answer 19

The Sun

Question 20

True or False: An ecosystem includes both living and non-living components.

Answer 20

True

Question 21

Fill in the blank: The process by which organisms evolve over time is known as _____.

Answer 21

Natural selection

Question 22

What is the term for the variety of life in a particular habitat?

Answer 22

Biodiversity

Question 23

Multiple Choice: Which gas do animals exhale? A) Oxygen B) Carbon Dioxide C) Nitrogen D) Hydrogen

Answer 23

B) Carbon Dioxide

Question 24

What is the primary function of the circulatory system?

Answer 24

Transport nutrients and oxygen to cells

Question 25

True or False: All matter is made up of atoms.

Answer 25

True

Question 26

Fill in the blank: The scientific study of living organisms is called _____.

Answer 26

Biology

Question 27

What is the main organ of the respiratory system?

Answer 27

Lungs

Question 28

Multiple Choice: Which of the following is a characteristic of living things? A) Growth B) Inability to reproduce C) Non-responsiveness D) All of the above

Answer 28

A) Growth

Question 29

What is the term for a group of cells that work together to perform a specific function?

Answer 29

Tissue

Question 30

True or False: Water is a compound.

Answer 30

True

Question 31

Fill in the blank: The chemical reaction that converts glucose and oxygen into energy is called _____.

Answer 31

Cellular respiration

Question 32

What is the main role of enzymes in biological reactions?

Answer 32

To speed up the reactions

Question 33

Multiple Choice: Which of the following is not a characteristic of living things? A) Ability to move B) Ability to reproduce C) Ability to die D) Ability to breathe

Answer 33

C) Ability to die

Question 34

What are the two main types of cells?

Answer 34

Prokaryotic and Eukaryotic

Question 35

True or False: The Earth revolves around the Sun in a circular orbit.

Answer 35

False

Question 36

Fill in the blank: The part of the brain responsible for coordination and balance is called the _____.

Answer 36

Cerebellum

Question 37

What is the primary purpose of the skeletal system?

Answer 37

Support and protect the body

Question 38

Multiple Choice: Which type of energy is stored in food? A) Kinetic B) Potential C) Thermal D) Chemical

Answer 38

D) Chemical

Question 39

What is the term for the movement of substances across a cell membrane?

Answer 39

Transport

Question 40

True or False: All ecosystems are made up of biotic factors only.

Answer 40

False

Question 41

Fill in the blank: The study of the interactions between organisms and their environment is called _____.

Answer 41

Ecology

Question 42

What is the main function of the digestive system?

Answer 42

Break down food and absorb nutrients

Question 43

Multiple Choice: Which of the following is a non-renewable resource? A) Natural gas B) Solar energy C) Wind energy D) Biomass

Answer 43

A) Natural gas

Question 44

What is the process by which plants take in carbon dioxide?

Answer 44

Photosynthesis

Question 45

True or False: The skeletal system produces blood cells.

Answer 45

True

Question 46

Fill in the blank: The basic building blocks of matter are called _____.

Answer 46

Atoms

Question 47

What is the role of chlorophyll in plants?

Answer 47

To absorb light energy for photosynthesis

Question 48

Multiple Choice: Which of the following systems is responsible for movement? A) Nervous B) Muscular C) Digestive D) Endocrine

Answer 48

B) Muscular