Biology Chapter 10

Question 1

Photosynthesis takes in — and — and produces —?

Answer 1

Carbon dioxide,
Water,
Glucose

Question 2

6 CO2 + 12 H2O —->

Answer 2

C6H12O6 + 6 H2O + 6 O2

Question 3

Autotrophs

Answer 3

Make organic molecules themselves by photosynthesis.

Eg: green plants, algae

Question 4

Heterotrophs

Answer 4

Take in organic molecules ready made.

Eg: animals (feeding), fungi (decomposing)

Question 5

Water comes into the leaf through

Answer 5

Veins from the roots

Question 6

CO2 enters the leaf through

Answer 6

Small holes called stomata

Question 7

Where are chloroplasts mainly?

Answer 7

On the top surface of the leaf

Question 8

What are the two stages of photosynthesis?

Answer 8

Light reactions and Calvin cycle

Question 9

Light reaction uses light energy

Answer 9

To form ATP and also split water into hydrogen and oxygen

Question 10

What is added to NADP to make NADPH?

Answer 10

Hydrogen

Question 11

Calvin cycle

Answer 11

Uses NADPH and ATP to form carbohydrate from carbon dioxide

Question 12

Different colors of light are different

Answer 12

Wavelengths

Question 13

Red light has a longer wavelength than

Answer 13

Blue light

Question 14

Chlorophyll reflects — but absorbs — and —.

Answer 14

green light,

red and blue light

Question 15

Electron acceptor molecules hold high energy electrons to

Answer 15

stop them from wasting the energy as heat

Question 16

A photosystem is

Answer 16

A chlorophyll molecule, electron acceptor, and other light gathering molecules like carotene

Question 17

What is one idea to help the search for life on other planets?

Answer 17

Look for the characteristic wavelengths of light that are reflected by photosynthetic organisms

Question 18

Where do the light reactions take place?

Answer 18

In the grana of the chloroplast

Question 19

Photosynthesis is

Answer 19

A series of anabolic reactions that form carbohydrates.

Question 20

Cyclic electron flow uses

Answer 20

photosystem I

Question 21

How does the cyclic acid cycle produce ATP

Answer 21

Using a proton pump

Question 22

Non-cyclic electron flow

Answer 22

Uses photosystems I and II

Produces ATP and NADPH molecules

Splits water to get electrons from the hydrogen

Question 23

Calvin cycle takes place where?

Answer 23

In the stroma of the chloroplast

Question 24

The Calvin cycle takes in — and produces —

Answer 24

CO2,

Carbohydrate (Glyceraldehyde phosphate)

Question 25

The Calvin cycle uses the — and — that were produced in the light reactions

Answer 25

ATP,

NADPH

Question 26

In artificial photosynthesis, light is used to

Answer 26

Split water and produce hydrogen

Question 27

Hydrogen powered cars

Answer 27

Have a range of over 300 miles,

Can be refueled in a few minutes

Question 28

Glyceraldehyde phosphate is used to make

Answer 28

Glucose (C6H12O6)

Question 29

Glucose can be stored in the plant as

Answer 29

Starch

Question 30

Other enzymes convert carbohydrates into

Answer 30

Lipids

Question 31

Plants can make proteins if they have

Answer 31

Nitrate (absorbed into roots from fertilizer)

Question 32

Plants can make Nucleic acids if they have

Answer 32

Phosphate

Question 33

The three different types of plants are

Answer 33

C3 plants

C4 plants

CAM plants

Question 34

C3 plants

Answer 34

Typical plants that open their stomata during the day and close their stomata at night.

Commonly in cool areas: Canada

Question 35

C4 plants

Answer 35

Open their stomata only briefly during the day.

Mainly tropical plants: sugarcane

Question 36

C4 plants store CO2 as the 4 carbon sugar

Answer 36

Oxaloacetate

Question 37

CAM plants

Answer 37

Only open their stomata at night to conserve water.

Desert plants: cactus