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

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

Answer 3

Photosynthesis

Question 4

What are the three states of matter?

Answer 4

Solid, liquid, gas

Question 5

Which part of the cell contains genetic material?

Answer 5

Nucleus

Question 6

True or False: The mitochondria is known as the powerhouse of the cell.

Answer 6

True

Question 7

Fill in the blank: The Earth’s crust is made up of __________.

Answer 7

Tectonic plates

Question 8

What is the primary gas that plants take in during photosynthesis?

Answer 8

Carbon dioxide

Question 9

True or False: The heart is a muscle.

Answer 9

True

Question 10

What type of blood vessel carries blood away from the heart?

Answer 10

Arteries

Question 11

What is the role of the small intestine?

Answer 11

Nutrient absorption

Question 12

Multiple choice: Which organ is responsible for detoxifying chemicals in the body? A) Heart B) Liver C) Lungs D) Kidneys

Answer 12

B) Liver

Question 13

What is the function of the large intestine?

Answer 13

Water absorption and waste elimination

Question 14

What is the main function of the skeletal system?

Answer 14

Support and protection of internal organs

Question 15

What is the main difference between plant and animal cells?

Answer 15

Plant cells have a cell wall and chloroplasts; animal cells do not.

Question 16

Multiple choice: Which of the following is a renewable resource? A) Coal B) Oil C) Solar energy D) Natural gas

Answer 16

C) Solar energy

Question 17

What is au on element table

Answer 17

Gold

Question 18

True or False: Water is a compound.

Answer 18

True

Question 19

What is the chemical symbol for gold?

Answer 19

Au

Question 20

Fill in the blank: The pH scale measures how __________ a substance is.

Answer 20

Acidic or basic

Question 21

What is the main purpose of a scientific experiment?

Answer 21

To test a hypothesis

Question 22

Multiple choice: Which of the following is a characteristic of living things? A) Growth B) Movement C) Respiration D) All of the above

Answer 22

D) All of the above

Question 23

What is the term for the variable that is changed in an experiment?

Answer 23

Independent variable

Question 24

True or False: The dependent variable is the one that is measured in an experiment.

Answer 24

True

Question 25

Fill in the blank: __________ is the process by which water vapor turns into liquid water.

Answer 25

Condensation

Question 26

What is the main source of energy for the Earth?

Answer 26

The Sun

Question 27

Multiple choice: Which of the following is not a greenhouse gas? A) Carbon dioxide B) Methane C) Oxygen D) Nitrous oxide

Answer 27

C) Oxygen

Question 28

What is the main function of the respiratory system?

Answer 28

To facilitate gas exchange

Question 29

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

Answer 29

True

Question 30

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

Answer 30

Amino acids

Question 31

What is the function of enzymes in biological systems?

Answer 31

To speed up chemical reactions

Question 32

Multiple choice: Which of the following processes occurs in the mitochondria? A) Photosynthesis B) Respiration C) Digestion D) Excretion

Answer 32

B) Respiration

Question 33

What is the process by which a liquid changes into a gas called?

Answer 33

Evaporation

Question 34

True or False: An ecosystem consists of living and non-living components.

Answer 34

True

Question 35

Fill in the blank: __________ is the study of interactions between organisms and their environment.

Answer 35

Ecology

Question 36

What is the term for the maximum population size that an environment can sustain?

Answer 36

Carrying capacity

Question 37

Multiple choice: Which of the following is a decomposer? A) Grass B) Mushroom C) Rabbit D) Eagle

Answer 37

B) Mushroom

Question 38

What is the primary source of energy for most ecosystems?

Answer 38

The Sun

Question 39

True or False: Biodiversity refers to the variety of life in an ecosystem.

Answer 39

True

Question 40

Fill in the blank: __________ is the process by which nitrogen is converted into a usable form for plants.

Answer 40

Nitrogen fixation

Question 41

What is the difference between a food chain and a food web?

Answer 41

A food chain is a linear sequence of organisms, while a food web is a complex network of interconnected food chains.

Question 42

Multiple choice: Which layer of the Earth is liquid? A) Crust B) Mantle C) Outer core D) Inner core

Answer 42

C) Outer core

Question 43

What is the primary function of the integumentary system?

Answer 43

To protect the body

Question 44

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

Answer 44

True

Question 45

Fill in the blank: The __________ system regulates body functions through hormones.

Answer 45

Endocrine

Question 46

What is the function of the immune system?

Answer 46

To protect the body against pathogens

Question 47

Multiple choice: Which cell type is responsible for carrying oxygen in the blood? A) White blood cells B) Platelets C) Red blood cells D) Plasma

Answer 47

C) Red blood cells

Question 48

What is the term for the process by which organisms maintain a stable internal environment?

Answer 48

Homeostasis

Question 49

True or False: All animals are heterotrophs.

Answer 49

True

Question 50

Fill in the blank: __________ is the movement of substances across a cell membrane without the use of energy.

Answer 50

Passive transport

Question 51

What is the role of chlorophyll in photosynthesis?

Answer 51

To absorb sunlight

Question 52

Multiple choice: Which of the following is a product of respiration? A) Glucose B) Oxygen C) Carbon dioxide D) Water

Answer 52

C) Carbon dioxide

Question 53

What is the primary function of the nervous system?

Answer 53

To transmit signals throughout the body

Question 54

True or False: Neurons are the basic units of the nervous system.

Answer 54

True

Question 55

Fill in the blank: __________ is the type of energy stored in food.

Answer 55

Chemical energy

Question 56

What is the function of the excretory system?

Answer 56

To remove waste from the body

Question 57

Multiple choice: Which organ is primarily responsible for filtering blood? A) Heart B) Lungs C) Kidneys D) Liver

Answer 57

C) Kidneys