Energy In Food

Question 1

What are the three essential components that plants need for photosynthesis?

Answer 1

Carbon dioxide, water, and light

These components are crucial for the process of photosynthesis, where plants convert light energy into chemical energy.

Question 2

What are the products of photosynthesis?

Answer 2

Sugars and oxygen

These products are generated during the photosynthesis process, which is vital for plant growth and oxygen production.

Question 3

Fill in the blank: Plants produce _______ during photosynthesis.

Answer 3

sugars and oxygen

Question 4

What is the primary source of energy on Earth?

Answer 4

The Sun

Almost all of the energy on Earth comes either directly or indirectly from the Sun.

Question 5

What process do plants use to convert solar energy?

Answer 5

Photosynthesis

Plants use the energy from the Sun in the process of photosynthesis.

Question 6

What do living things obtain indirectly from the Sun?

Answer 6

Energy from plants

Other living things get energy indirectly from the Sun when they eat plants.

Question 7

What are fossil fuels?

Answer 7

Coal, oil, and natural gas

Fossil fuels come from fossilized plants and animals that lived long ago.

Question 8

How do fossil fuels contribute to daily life?

Answer 8

They light up cities, cook food, and power appliances

Energy from fossil fuels lights up our cities, homes, and schools, and powers electrical appliances.

Question 9

Fill in the blank: Energy that comes directly from the Sun provides _______ to all living things.

Answer 9

warmth

Question 10

True or False: Energy is visible.

Answer 10

False

We cannot see energy but can see the effects it produces.

Question 11

What is one major role of energy from the Sun for plants?

Answer 11

To carry out life processes

Much of the energy from the Sun is used by plants to carry out life processes.

Question 12

Why do living things need food?

Answer 12

To survive and use energy stored in food for activities.

Living things need energy for life processes such as growing and reproducing.

Question 13

What do living things need energy for?

Answer 13

Carrying out life processes such as growing and reproducing.

Energy is crucial for maintaining biological functions.

Question 14

What is the process of breaking down food to glucose called?

Answer 14

Digestion.

Digestion allows food to be converted into a usable form of energy.

Question 15

What happens to the energy stored in food during respiration?

Answer 15

It is released.

Respiration is a key process in which cells obtain energy from glucose.

Question 16

What occurs in the mouth during digestion?

Answer 16

Food is chewed into small pieces and digested slightly by saliva.

Saliva contains enzymes that begin the digestion process.

Question 17

What is the role of the stomach in digestion?

Answer 17

Food is further broken down by digestive juices.

The stomach’s acidic environment aids in the digestion of food.

Question 18

Where is food completely digested into glucose?

Answer 18

Small intestine.

The small intestine is where most nutrient absorption occurs.

Question 19

What is the formula for respiration?

Answer 19

Glucose + Oxygen → Energy + Carbon dioxide + Water.

This equation summarizes the process by which cells generate energy.

Question 20

True or False: Food only provides us with energy.

Answer 20

False.

Food also contains many nutrients such as vitamins and minerals.

Question 21

Fill in the blank: Some types of food contain many _______.

Answer 21

nutrients.

Nutrients include vitamins and minerals essential for health.

Question 22

What energy does the Sun provide to plants?

Answer 22

Light and heat energy

Question 23

What process do green plants use to make food?

Answer 23

Photosynthesis

Question 24

What pigment allows plants to capture light energy?

Answer 24

Chlorophyll

Question 25

Which substances do plants use during photosynthesis?

Answer 25

Carbon dioxide and water

Question 26

Where is water absorbed in plants?

Answer 26

Roots

Question 27

What are the small openings in leaves that allow carbon dioxide to enter called?

Answer 27

Stomata

Question 28

What is the food produced by plants during photosynthesis?

Answer 28

Sugar

Question 29

What process allows plants to break down sugar for energy?

Answer 29

Respiration

Question 30

What gas is released into the surroundings during photosynthesis?

Answer 30

Oxygen

Question 31

What form is excess sugar stored in plants?

Answer 31

Starch

Question 32

What is an example of a root storage part in plants?

Answer 32

Carrot, Tapioca, Sweet potato

Question 33

What is an example of a stem storage part in plants?

Answer 33

Ginger, Potato

Question 34

What is an example of a flower storage part in plants?

Answer 34

Broccoli, Cauliflower

Question 35

What is an example of a fruit storage part in plants?

Answer 35

Mango, Orange, Apple, Papaya, Guava

Question 36

When a part of the plant is growing, what happens to the starch stored?

Answer 36

It is converted back into sugar and transported to that part

Question 37

Fill in the blank: Plants convert _______ and water into sugar and oxygen during photosynthesis.

Answer 37

Carbon dioxide

Question 38

True or False: Only plants with chlorophyll can perform photosynthesis.

Answer 38

True

Question 39

What light sources can plants use for photosynthesis?

Answer 39

Plants can use light energy from the Sun and visible light from artificial sources, but not green light (530-600 nm). ## Footnote Green light does not provide the necessary energy for photosynthesis.

Question 40

Do plants respire only at night?

Answer 40

No, plants respire all the time, both in the presence and absence of light. ## Footnote Photosynthesis occurs only in the presence of light.

Question 41

What do plants obtain from the soil?

Answer 41

Plants obtain water and minerals from the soil, but do not get food from it. ## Footnote Plants make their own food through photosynthesis.

Question 42

How do animals obtain energy?

Answer 42

Animals cannot make their own food; they must eat plants or other animals to get energy. ## Footnote This is essential for their survival.

Question 43

What are plant-eaters?

Answer 43

Animals that eat only plants. ## Footnote Examples include goats, cows, deer, caterpillars, grasshoppers, and rabbits.

Question 44

What are animal-eaters?

Answer 44

Animals that eat only other animals. ## Footnote Examples include tigers, lions, foxes, snakes, hawks, and spiders.

Question 45

What are plant-and-animal eaters?

Answer 45

Animals that eat both plants and animals. ## Footnote Examples include humans, chickens, monkeys, and bears.

Question 46

What happens to the energy obtained by plant-eaters?

Answer 46

The energy is passed on to animal-eaters or plant-and-animal eaters that consume the plant-eaters.

Question 47

What is respiration?

Answer 47

The breakdown of sugar glucose with the release of energy in living cells. ## Footnote Respiration occurs in both plants and animals.

Question 48

What is the equation for respiration?

Answer 48

Sugar + Oxygen → Carbon dioxide + Water + Energy

Question 49

True or False: We use our noses for respiration while plants use their stomata.

Answer 49

False

Question 50

Where does respiration take place?

Answer 50

In the cells of all living things.

Question 51

What are the factors needed for respiration to occur?

Answer 51

Oxygen and glucose.

Question 52

What does respiration produce or release?

Answer 52

Energy, carbon dioxide, and water.

Question 53

When does respiration occur?

Answer 53

All the time, including at night.

Question 54

What is the main function of photosynthesis?

Answer 54

To convert light energy from the Sun into a usable form.

Question 55

Where does photosynthesis occur?

Answer 55

In the green parts of plants.

Question 56

What are the factors needed for photosynthesis to take place?

Answer 56

Light, water, carbon dioxide, and chlorophyll.

Question 57

What does photosynthesis produce or release?

Answer 57

Glucose (which is later changed to starch and other substances for storage) and oxygen.

Question 58

When does photosynthesis occur?

Answer 58

Only in the presence of light, during the day.

Question 59

What is the key difference between respiration and photosynthesis?

Answer 59

Respiration occurs all the time, while photosynthesis occurs only in the presence of light.

Question 60

Fill in the blank: Respiration occurs all the time, while _______ occurs only in the presence of light.

Answer 60

[photosynthesis]

Question 61

What are the end products of respiration?

Answer 61

Energy, carbon dioxide, and water.

Question 62

What is the role of chlorophyll in photosynthesis?

Answer 62

It captures light energy.

Question 63

What is the primary source of energy for living things on Earth?

Answer 63

The Sun ## Footnote The Sun provides heat and light essential for life.

Question 64

What do we need light for?

Answer 64

To see ## Footnote Light is essential for vision.

Question 65

What do we need heat for?

Answer 65

For our bodies to function ## Footnote Heat is necessary for maintaining physiological processes.

Question 66

How is energy from the Sun transferred to humans?

Answer 66

Through plants and animals ## Footnote Humans obtain energy by consuming plants and animals that have absorbed solar energy.

Question 67

What would happen to plants without the Sun?

Answer 67

They would not be able to photosynthesise and would die ## Footnote Photosynthesis is crucial for plant survival.

Question 68

What is the consequence of no photosynthesis for life on Earth?

Answer 68

There would be no oxygen to support life ## Footnote Oxygen produced during photosynthesis is vital for animal life.

Question 69

Fill in the blank: All the energy in our food can be traced back to the _______.

Answer 69

Sun ## Footnote This highlights the Sun's role in the food chain.

Question 70

True or False: Without the Sun, all animals would die.

Answer 70

True ## Footnote The Sun is essential for the survival of all life forms on Earth.