Ch. 7 Reading Questions
A C4 plant is so named because oxaloacetate has carbons.
4
Which of the following are products of the Calvin cycle?
ADP NADP+ CH2O
Select all of the products of the light reactions of photosynthesis. Multiple select question. ATP NADPH H2O CO2
ATP NADPH
Select all of the products of the light reactions of photosynthesis. Multiple select question. H2O ATP NADPH CO2
ATP NADPH
Using whole numbers (numerals, not words-- i.e. "2" not "two") complete the general equation for photosynthesis: CO2 + H2O ------------> (CH2O) + 6 H2O + 02
Blank 1: 6 Blank 2: 12 Blank 3: 6 Blank 4: 6
Which alternate form of photosynthesis uses the enzyme RuBP carboxylase to fix carbon dioxide in mesophyll cells, which are scattered throughout the leaf, to produce 3PG first? Multiple choice question. C4 CAM C3
C3
Which alternate form of photosynthesis uses the enzyme RuBP carboxylase to fix carbon dioxide in mesophyll cells, which are scattered throughout the leaf, to produce 3PG first? Multiple choice question. CAM C4 C3
C3
Which of the following are reactants for the Calvin cycle? Multiple select question. CO2 H2O ATP O2 NADPH NADP+
CO2 ATP NADPH
Select the three steps of the Calvin cycle from the options listed here. Multiple select question. Krebs cycle Carbon dioxide fixation Regeneration of RuBP Electron transport chain Carbon dioxide reduction Glycolysis
Carbon dioxide fixation Regeneration of RuBP Carbon dioxide reduction
The term used to describe the method by which ATP is produced by the flow of H+ from high concentration to low concentration is
Chemiosmosis
True or false: The flow of water molecules fuels the synthesis of ATP. True false question.TrueFalse
False
The product of the Calvin cycle that is the first reactant in many metabolic reactions in a plant cell is ______. Multiple choice question. CO2 G3P DNA NADPH 3PG
G3P
G3P is the product of the Calvin cycle and the first reactant in many metabolic reactions in a plant cell leading to the production of which other molecules? Multiple select question. Glucose phosphate Sucrose DNA Amino acids Carbon dioxide Fatty acids
Glucose phosphate Sucrose Amino acids Fatty acids
During photosynthesis, which molecule is oxidized? Multiple choice question. H2O CO2
H2O
Select all of the major inputs of the light reactions of photosynthesis. Multiple select question. ATP H2O ADP CO2 NADP+ Solar energy
H2O ADP NADP+ Solar energy
Which answer below is the coenzyme that transports electrons during photosynthesis? Multiple choice question. O2 H2O NADP+ ATP H+
NADP+
Select all that apply. During the light reactions, electrons that are energized by sunlight move down an electron transport chain, releasing energy that is captured to produce Multiple select question. solar energy NADPH NADP+ ATP
NADPH ATP
Which of the following are products of the light reactions that then serve as reactants for the Calvin cycle? Multiple choice question. ATP and carbohydrate NADPH and ATP Oxygen and glucose
NADPH and ATP
Which of these are advantages of the C4 pathway over the C3 pathway? Multiple select question. Photorespiration does not occur in C4 plants. The C4 pathway allows a plant to close its stomata for longer periods. The C4 pathway fixes CO2 to RuBP in mesophyll cells. The C4 pathway increases photosynthesis at high temperatures.
Photorespiration does not occur in C4 plants. The C4 pathway allows a plant to close its stomata for longer periods. The C4 pathway increases photosynthesis at high temperatures.
Which of these is a molecular complex that uses light energy to reduce NADP+ to NADPH? Multiple choice question. Photosystem II Photosystem I
Photosystem I
Place these events in the correct order as they would occur in the production of ATP fueled by the energy collected by photosystem II. Begin with the first event to occur at the top of the list.
Position 2 of 3 A hydrogen ion gradient is established. correct toggle button unavailable A hydrogen ion gradient is established. Position 3 of 3 Hydrogen ions flow through ATP synthase. correct toggle button unavailable Hydrogen ions flow through ATP synthase.
Which enzyme begins the Calvin cycle reactions by catalyzing attachment of the carbon atom from CO2 to a 5-C sugar, RuBP? Multiple choice question. RuBP carboxylase ATP synthase Peroxidase Transferrin
RuBP carboxylase
An organism that captures energy and synthesizes organic molecules from inorganic nutrients, such as carbon dioxide, is called a(n)
autotroph or photoautotroph
An autotrophic organism is best described as an organism that Multiple choice question. can capture energy and synthesize organic molecules from inorganic nutrients cannot synthesize organic compounds from inorganic substances and therefore must take in organic food
can capture energy and synthesize organic molecules from inorganic nutrients
The stomata of a plant allow ______________from the air to enter the leaf tissues.
carbon Blank 2: dioxide
Pigments that serve as an accessory to chlorophyll in photosynthesis and that can give cells a yellow to red color are called Blank______. Multiple choice question. bilirubin retinal carotenoids rhodopsin
carotenoids
While chlorophyll is the major pigment used in photosynthesis, plants also use yellow and orange accessory pigments called
carotenoids
What is the term for the process by which the light reactions of photosynthesis generate energy in the form of ATP? Multiple choice question. respiration fermentation chemiosmosis
chemiosmosis
A green pigment that absorbs solar energy and is important in algal and plant photosynthesis is called
chlorophyll
The primary photosynthetic pigment that plants use to absorb solar energy is
chlorophyll
Photosystem I functions to Multiple choice question. convert CO2 to ATP. form NADPH. produce electrons, H+ions, and oxygen molecules. convert ADP to ATP.
form NADPH.
Organisms that cannot synthesize organic compounds from inorganic substances and therefore must take in organic molecules (food) are
heterotrophic, heterotrophs, or consumers
When NADPH is ______ it gives up electrons. Multiple choice question. oxidized reduced combined with water
oxidized
Which process converts solar energy into chemical energy in the form of a carbohydrate? Multiple choice question. the Krebs cycle photosynthesis cellular respiration
photosynthesis
In photosynthesis, the reaction that begins with CO2 and ends with CH2O is a(n) _________ reaction. Multiple choice question. reduction oxidation
reduction
The ultimate source of energy for photosynthesis is solar energy. carbohydrates. ATP.
solar energy.
Photosynthesis is the process that converts solarBlank 1Blank 1 solar , Correct Unavailable energy into the chemicalBlank 2Blank 2 chemical , Correct Unavailable energy of a carbohydrate.
solar, sun, light, or sunlight chemical
During photosynthesis, carbon dioxide enters the leaf of a plant through small openings called _____. Multiple choice question. stomata grana thylakoids chloroplasts stroma
stomata
During photosynthesis, carbon dioxide enters the leaf of a plant through small openings called _____. Multiple choice question. stomata stroma grana chloroplasts thylakoids
stomata
The two outer membranes of the chloroplast enclose a gelatinous matrix called the
stroma
The semifluid interior of a chloroplast is the Multiple choice question. thylakoid. stroma. grana. stoma.
stroma.
The ultimate energy to fuel the process of photosynthesis comes from the
sun
Energy to move electrons down the electron transport chain during the light reactions of photosynthesis comes from _____. Multiple choice question. carbon dioxide ATP sunlight oxygen NADPH
sunlight
RuBP carboxylase is an enzyme found in chloroplasts and is also Multiple choice question. the carbohydrate end product of photosynthesis. a photosynthetic pigment found in blue-green algae. the first enzyme in the Calvin cycle. the inactive form of ATP synthase.
the first enzyme in the Calvin cycle.
Select the reactants for the process of photosynthesis. Multiple select question. oxygen glucose water carbon dioxide
water carbon dioxide
True or false: When NADP+ is reduced, it accepts electrons. True false question.TrueFalse
True
