Photosynthesis Flashcards

1
Q

What is the most important way in which organisms interact?

A

In their search for food or energy.

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2
Q

What is the ultimate source of energy for all living things?

A

The Sun.

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3
Q

In what form does the Sun provide energy?

A

The Sun provides energy in the form of light and heat, which is known as radiant energy.

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4
Q

What is the process called where green plants convert radiant energy into a form of energy that living organisms can use?

A

Photosynthesis.

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5
Q

How does plants make food during photosynthesis?

A

In a series of chemical reactions.

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6
Q

What is the role of chlorophyll in photosynthesis?

A

It absorbs the radiant energy from the Sun.

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7
Q

What is the role of the roots in photosynthesis?

A

Absorb water from the soil.

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8
Q

What is the role of the leaves in photosynthesis?

A

Gases are absorbed and released through them.

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9
Q

What is glucose?

A

Glucose is a simple sugar that is used by the plant for food.

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10
Q

Give the equation for photosynthesis.

A

chlorophyll
carbon dioxide + water —————–> glucose + oxygen sunlight

Whoops the formatting isn’t right. Its meant to be chlorophyll on top of the arrow with sunlight underneath the arrow

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11
Q

Where is the potential energy stored?

A

It is trapped in the glucose.

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12
Q

What is the point of the potential energy stored in the glucose?

A

It is the fuel that plants use to do their work.

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13
Q

What happens when animals eat plants?

A

They consume the energy that the plants have made during photosynthesis.

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14
Q

What other chemical compounds can plants change glucose into?

A

Starch and cellulose.

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15
Q

What is the point of changing glucose into these other chemical compounds?

A

They are required by plants for different processes such as growth and reproduction.

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16
Q

Why do plants change glucose molecules into starch?

A

It is the chemical compound they use to store energy.

17
Q

How is starch formed?

A

Many glucose molecules join together to form a molecule of starch.

18
Q

What is the most important energy source that is needed to sustain life?

A

Sugar and starch. (It is food for humans and animals)

19
Q

What is cellulose?

A

Cellulose is part of the cell walls of plant cells.

20
Q

What is the purpose of cellulose?

A

It is a structural material that provides plants with support. It is the reason trees can grown so tall without falling over.

21
Q

Give an example of human’s getting energy from photosynthesis.

A
  1. Photosynthesis takes place in the leaves of a carrot.
  2. Starch is stored in the carrot.
  3. Fin eat’s the carrot during English. (With his celery)

This is simply a guideline. Other examples are also valid