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Biology > Ch 9 Test > Flashcards

Ch 9 Test Flashcards

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0
Q

T or f

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

A

False, photosynthesis

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1
Q

T or f

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

A

True

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2
Q

T or f

-photosynthesis- is a process that takes place in autotrophs

A

True

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3
Q

T or f

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

A

False, glucose

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4
Q

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

A

True

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5
Q

T or f

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

A

True

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6
Q

T or f

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

A

False, reactions

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7
Q

T or f

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

A

False, grana

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8
Q

T or f

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

A

True

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9
Q

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

A

True

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10
Q

T or f

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

A

False, independent

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11
Q

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.

A

True

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12
Q

T or f

Glycolysis breaks down glucose into two -pyruvates-.

A

True

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13
Q

T or f

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

A

False, first

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14
Q

T or f

Glycolysis is an -aerobic- process.

A

False, anaerobic

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15
Q

T or f

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

A

False, citric acid (kreb’s)

16
Q

T or f

Fermentation takes place in absence of -carbon dioxide-

A

False, oxygen

17
Q

T or f

Lactic acid fermentation is an -anaerobic- process

A

True

18
Q 
Most of the energy used by life on earth comes from the:
Sun
Rotation of earth
Moon
Weather
A

Sun

19
Q 
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
A

Must consume other organisms to get energy

20
Q 
Light energy is converted to chemical energy through the process of:
Cellular respiration
Fermentation
Photosynthesis
Glycolysis
A

Photosynthesis

21
Q 
Which of the following organisms do not carry out photosynthesis?
Plants
Algae
Certain prokaryotes
Animals
A

Animals

22
Q

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

A

Glucose is a less stable carbon compound than carbon dioxide is

23
Q 
ATP is composed of a nitrogenous base, a sugar, and:
One phosphate group
Two phosphate groups
Three phosphate groups
Four phosphate groups
A

Three phosphate groups

24
Q 
Chloroplasts : photosynthesis ::
Mitochondria : cellular respiration
Solar energy : cellular respiration
Metabolism : carbon
Oxygen : carbon dioxide
A

Mitochondria : cellular respiration

25
Q 
Photosynthesis : oxygen ::
Oxygen : carbon dioxide 
Cellular respiration : carbon dioxide
Cellular respiration : oxygen
Cellular respiration : enzymes
A

Cellular respiration : carbon dioxide

26
Q

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

A

Stored temporarily in ATP molecules

27
Q

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

A

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

28
Q

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

A

A substantial amount of energy is released

29
Q 
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
A

Electron transport chain

30
Q 
The space inside the inner membrane of a chloroplast is called the:
Thylakoid
Reaction center
Pigment
Stroma
A

Stroma

31
Q

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

A

It reflects green wavelengths of light

32
Q 
The major atmospheric by-product of photosynthesis is:
Nitrogen
Carbon dioxide
Water
Oxygen
A

Oxygen

33
Q 
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
A

The atmosphere is rich in oxygen gas

34
Q 
The source of oxygen produced during photosynthesis is:
Carbon dioxide
Water
The air
Glucose
A

Water, the air

35
Q

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

A

To form molecules of NADPH

36
Q

Photosynthesis:

A 
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
37
Q

Cellular respiration/

A 
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

Biology (12 decks)

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