Ch 9 Test

Question 0

T or f

-homeostasis- is the process by which plants use sunlight to make organic compounds from carbon dioxide and water.

Answer 0

False, photosynthesis

Question 1

T or f

All organisms need -energy- to carry out life processes.

Answer 1

True

Question 2

T or f

-photosynthesis- is a process that takes place in autotrophs

Answer 2

True

Question 3

T or f

Photosynthesis converts stable carbon dioxide molecules into -oxygen-, a less stable carbon compound.

Answer 3

False, glucose

Question 4

T or f
Through the process of cellular respiration, cells make carbon in glucose into stable carbon dioxide and produce -energy-

Answer 4

True

Question 5

T or f

-atp- is a portable form of energy “currency” inside cells

Answer 5

True

Question 6

T or f

In cells, chemical energy is gradually released in a series of chemical -compounds- that are assisted by enzymes.

Answer 6

False, reactions

Question 7

T or f

The thylakoid membrane is folded in a way that produces flat, disc-like sacs called -stroma-.

Answer 7

False, grana

Question 8

T or f

Plant cells use light energy to make ATP and -NADPH-

Answer 8

True

Question 9

T or f
Plants get electrons to replace the excited electrons that leave chlorophyll and molecules by splitting -water- molecules

Answer 9

True

Question 10

T or f

The final stage of photosynthesis during which sugar molecules are produced is light -dependent-.

Answer 10

False, independent

Question 11

T or f
Most of the three-carbon sugars formed during the -Calvin- cycle are used to regenerate the five-carbon compound that began the cycle.

Answer 11

True

Question 12

T or f

Glycolysis breaks down glucose into two -pyruvates-.

Answer 12

True

Question 13

T or f

Glycolysis occurs during the -second- stage of cellular respiration.

Answer 13

False, first

Question 14

T or f

Glycolysis is an -aerobic- process.

Answer 14

False, anaerobic

Question 15

T or f

The first stage of aerobic respiration is a series of biochemical reactions called the -Calvin- cycle

Answer 15

False, citric acid (kreb’s)

Question 16

T or f

Fermentation takes place in absence of -carbon dioxide-

Answer 16

False, oxygen

Question 17

T or f

Lactic acid fermentation is an -anaerobic- process

Answer 17

True

Question 18

Most of the energy used by life on earth comes from the:
Sun
Rotation of earth
Moon
Weather

Answer 18

Sun

Question 19

Organisms that are not autotrophs:
Get energy from inorganic molecules
Can survive without energy
Must consume other organisms to get energy
Get energy from sunlight

Answer 19

Must consume other organisms to get energy

Question 20

Light energy is converted to chemical energy through the process of:
Cellular respiration
Fermentation
Photosynthesis
Glycolysis

Answer 20

Photosynthesis

Question 21

Which of the following organisms do not carry out photosynthesis?
Plants
Algae
Certain prokaryotes
Animals

Answer 21

Animals

Question 22

Which of the following statements about glucose is correct?
Glucose is a less stable carbon compound than carbon dioxide is
Glucose is a more stable carbon compound than carbon dioxide is
Glucose is produced during cellular respiration
Glucose is not a carbon compound

Answer 22

Glucose is a less stable carbon compound than carbon dioxide is

Question 23

ATP is composed of a nitrogenous base, a sugar, and:
One phosphate group
Two phosphate groups
Three phosphate groups
Four phosphate groups

Answer 23

Three phosphate groups

Question 24

``` Chloroplasts : photosynthesis :: Mitochondria : cellular respiration Solar energy : cellular respiration Metabolism : carbon Oxygen : carbon dioxide ```

Answer 24

Mitochondria : cellular respiration

Question 25

``` Photosynthesis : oxygen :: Oxygen : carbon dioxide Cellular respiration : carbon dioxide Cellular respiration : oxygen Cellular respiration : enzymes ```

Answer 25

Cellular respiration : carbon dioxide

Question 26

When cells break down food molecules, energy is: Released quickly Released entirely as body heat into the environment Stored temporarily in ATP molecules Stored permanently in ATP molecules

Answer 26

Stored temporarily in ATP molecules

Question 27

ATP is called a cell's energy "currency" because: ATP catalyzes all metabolic reactions ATP allows one organelle to be exchanged for another between cells Glucose is made of ATP ATP can be "made" in one place and "spent" or used in another

Answer 27

ATP can be "made" in one place and "spent" or used in another

Question 28

When a phosphate group is removed from an ATP molecule: A substantial amount of energy is released An enzyme is formed Energy is stored A substantial amount of energy is used

Answer 28

A substantial amount of energy is released

Question 29

``` The series of molecules that cause protons to build up on one side of a membrane is a(n): ATP synthase NADH ADP electron transport chain ```

Answer 29

Electron transport chain

Question 30

``` The space inside the inner membrane of a chloroplast is called the: Thylakoid Reaction center Pigment Stroma ```

Answer 30

Stroma

Question 31

Chlorophyll is green because: It absorbs green wavelengths of light It absorbs blue and yellow wavelengths, which make green It reflects green wavelengths of light Of an optical illusion caused by transmitted light

Answer 31

It reflects green wavelengths of light

Question 32

``` The major atmospheric by-product of photosynthesis is: Nitrogen Carbon dioxide Water Oxygen ```

Answer 32

Oxygen

Question 33

``` Because of photosynthesis: The atmosphere is rich in oxygen gas Animals can get energy directly from the sun Plants produce carbon dioxide Water is constantly being produced ```

Answer 33

The atmosphere is rich in oxygen gas

Question 34

``` The source of oxygen produced during photosynthesis is: Carbon dioxide Water The air Glucose ```

Answer 34

Water, the air

Question 35

While one type of electron transport chain of photosynthesis is used to form molecules of ATP, a second electron transport chain is used To form molecules of NADPH To move molecules to another ion pump To produce water As a fuel for forming another chlorophyll molecule

Answer 35

To form molecules of NADPH

Question 36

Photosynthesis:

Answer 36

``` Food accumulated Energy from sun stored in glucose Co2 taken in Oxygen given off Produces glucose from PGAL Goes on only in light Occurs only in presence of chlorophyll ```

Question 37

Cellular respiration/

Answer 37

``` Food broken down Energy of glucose released Co2 given off Oxygen taken in Produces co2 and h2o Goes on day and night Occurs in all living cells ```