Chapter 2 - Lesson 1 Flashcards Preview

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Flashcards in Chapter 2 - Lesson 1 Deck (30):
1

What kind of functions do cells have?

Making proteins and transporting substances into and out of the cell

2

What uses the energy in sunlight to make their food?

Plants and other organisms such as algae and bacteria

3

What is photosynthesis?

the process by which a cell captures energy in sunlight and uses it to make food

4

Photo means...

light

5

Synthesis means

putting together

6

How do all living things obtain energy of the sunlight captured during photosynthesis?

either directly or indirectly

7

Who benefits indirectly from the energy of the sun?

Animals like lions.

8

An organism that makes its own food is called an

autotroph

9

An organism that cannot make its own food is called

a heterotroph

10

Many heterotrophs obtain food by

eating other organisms

11

Some heterotrophs such as funghi obtain their food by

absorbing their food from other organisms

12

During photosynthesis, some plants and other organisms convert carbon dioxide and water into ______ and _______.

Oxygen and Sugars

13

During photsynthesis, some plants and organisms convert ______ and ______ into oxygen and sugars.

carbon dioxide and water

14

What are the 2 stages of photosynthesis?

Capturing the Sun's energy
Using energy to make food

15

What are pigments?

colored chemical compounds that absorb light

16

What is the main photosynthetic pigment in chloroplast?

chlorophyll

17

Chloroplasts are

green organelles inside plant cells

18

What does Chlorophyll do?

it captures light and uses it to power the second stage of photosynthesis

19

The cell needs 2 raw materials for the second stage of photosynthesis. What are they?

water H2O
carbon dioxide CO2

20

How does carbon dioxide enter the plant?

through small openings on the underside of the leaves called stomata

21

How does water get into the plant?

Absorbed by the roots from the soil and moves through the stem and then leaves

22

Once in the leaves, water and carbon dioxide move into

chloroplasts

23

Once inside chloroplasts, water and carbon dioxide go through a series of

chemical reactions

24

The chemical reactions in photosynthesis are powered by

energy captured in the first stage of photosynthesis

25

What is the photosynthesis equation?

6 CO2 + 6 H20 ---------> C6H12O6 + 6 O2

carbon dioxide + water ---sunlight---> a sugar + oxygen

26

One product of photosynthesis is

a sugar that has 6 carbon atoms C6H12O6
or
oxygen O2

27

What happens to the product oxygen in photosynthesis?

exits the leaf through the stomata

28

The sugar produced in photosynthesis is either

used to carry out functions or stored for later use

29

Cellulose is

a compound produced by sugar molecules

30

Why do living things need energy?

Every living thing needs energy because all cells need energy to carry out their functions.