Ch 9 Test Flashcards
T or f
-homeostasis- is the process by which plants use sunlight to make organic compounds from carbon dioxide and water.
False, photosynthesis
T or f
All organisms need -energy- to carry out life processes.
True
T or f
-photosynthesis- is a process that takes place in autotrophs
True
T or f
Photosynthesis converts stable carbon dioxide molecules into -oxygen-, a less stable carbon compound.
False, glucose
T or f
Through the process of cellular respiration, cells make carbon in glucose into stable carbon dioxide and produce -energy-
True
T or f
-atp- is a portable form of energy “currency” inside cells
True
T or f
In cells, chemical energy is gradually released in a series of chemical -compounds- that are assisted by enzymes.
False, reactions
T or f
The thylakoid membrane is folded in a way that produces flat, disc-like sacs called -stroma-.
False, grana
T or f
Plant cells use light energy to make ATP and -NADPH-
True
T or f
Plants get electrons to replace the excited electrons that leave chlorophyll and molecules by splitting -water- molecules
True
T or f
The final stage of photosynthesis during which sugar molecules are produced is light -dependent-.
False, independent
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.
True
T or f
Glycolysis breaks down glucose into two -pyruvates-.
True
T or f
Glycolysis occurs during the -second- stage of cellular respiration.
False, first
T or f
Glycolysis is an -aerobic- process.
False, anaerobic
T or f
The first stage of aerobic respiration is a series of biochemical reactions called the -Calvin- cycle
False, citric acid (kreb’s)
T or f
Fermentation takes place in absence of -carbon dioxide-
False, oxygen
T or f
Lactic acid fermentation is an -anaerobic- process
True
Most of the energy used by life on earth comes from the: Sun Rotation of earth Moon Weather
Sun
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
Must consume other organisms to get energy
Light energy is converted to chemical energy through the process of: Cellular respiration Fermentation Photosynthesis Glycolysis
Photosynthesis
Which of the following organisms do not carry out photosynthesis? Plants Algae Certain prokaryotes Animals
Animals
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
Glucose is a less stable carbon compound than carbon dioxide is
ATP is composed of a nitrogenous base, a sugar, and: One phosphate group Two phosphate groups Three phosphate groups Four phosphate groups
Three phosphate groups
Chloroplasts : photosynthesis :: Mitochondria : cellular respiration Solar energy : cellular respiration Metabolism : carbon Oxygen : carbon dioxide
Mitochondria : cellular respiration
Photosynthesis : oxygen :: Oxygen : carbon dioxide Cellular respiration : carbon dioxide Cellular respiration : oxygen Cellular respiration : enzymes
Cellular respiration : carbon dioxide
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
Stored temporarily in ATP molecules
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
ATP can be “made” in one place and “spent” or used in another
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 substantial amount of energy is released
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
Electron transport chain
The space inside the inner membrane of a chloroplast is called the: Thylakoid Reaction center Pigment Stroma
Stroma
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
It reflects green wavelengths of light
The major atmospheric by-product of photosynthesis is: Nitrogen Carbon dioxide Water Oxygen
Oxygen
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
The atmosphere is rich in oxygen gas
The source of oxygen produced during photosynthesis is: Carbon dioxide Water The air Glucose
Water, the air
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
To form molecules of NADPH
Photosynthesis:
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
Cellular respiration/
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
