Question 1

Which of the following is not a usual component found in the stroma?

Accepted Answer

A) tRNAs 
B) prokaryote-like ribosomes 
C) circular DNA 
D) linear DNA 
E) many different polypeptides 
A) tRNAs 
B) prokaryote-like ribosomes 
C) circular DNA 
D) linear DNA 
E) many different polypeptides

Question 2

The outer membrane of the chloroplast contains _____ like the outer membrane of ______.

Accepted Answer

A) carbohydrates,mitochondria 
B) carbohydrates,peroxisomes 
C) several different porins,mitochondria 
D) mitochondria,porins 
E) several different porins,nucleus 
A) carbohydrates,mitochondria 
B) carbohydrates,peroxisomes 
C) several different porins,mitochondria 
D) mitochondria,porins 
E) several different porins,nucleus

Question 3

Calvin originally thought that the acceptor molecule for carbon dioxide during carbon fixation contained how many carbons?

Accepted Answer

A) 2 
B) 1 
C) 3 
D) 4 
E) 6 
A) 2 
B) 1 
C) 3 
D) 4 
E) 6

Question 4

Thylakoid membranes have ___________.

Accepted Answer

A) high protein content 
B) relatively plentiful phospholipids 
C) a low percentage of galactose-containing glycolipids 
D) low protein content 
E) high amounts of phospholipids 
A) high protein content 
B) relatively plentiful phospholipids 
C) a low percentage of galactose-containing glycolipids 
D) low protein content 
E) high amounts of phospholipids

Question 5

What substance is made in the mesophyll cells of CAM plants during the nighttime fixation of CO2 and then stored in the cell's central vacuole?

Accepted Answer

A) malate 
B) oxygen 
C) RuBP 
D) PEP 
E) water 
A) malate 
B) oxygen 
C) RuBP 
D) PEP 
E) water

Question 6

The non-pigmented precursors of chloroplasts are called __________.

Accepted Answer

A) prechloros 
B) preplastids 
C) proplastids 
D) prochloroplasts 
E) prechloroplasts 
A) prechloros 
B) preplastids 
C) proplastids 
D) prochloroplasts 
E) prechloroplasts

Question 7

Algal cultures in sealed containers were exposed to radiolabeled [14C]O2 for a brief incubation period.Soluble molecules were extracted from the algae and subjected to 2D-paper chromatography.How many carbons are found in the most predominant spot on the chromatogram?

Accepted Answer

A) 2 
B) 1 
C) 3 
D) 4 
E) 6 
A) 2 
B) 1 
C) 3 
D) 4 
E) 6

Question 8

About how many chlorophyll molecules are found in a single photosynthetic unit and how many of those chlorophyll molecules actually transfer electrons to an electron acceptor?

Accepted Answer

A) 300,200 
B) 300,1 
C) 300,300 
D) 2400,300 
E) 2,1 
A) 300,200 
B) 300,1 
C) 300,300 
D) 2400,300 
E) 2,1

Question 9

What is the minimum number of photons needed to make one molecule of O2 during photosynthesis?

Accepted Answer

A) 2 
B) 4 
C) 6 
D) 8 
E) 16 
A) 2 
B) 4 
C) 6 
D) 8 
E) 16

Question 10

What substance is attached to RuBP by Rubisco to make 2-phosphoglycolate?

Accepted Answer

A) ATP 
B) O2 
C) CO2 
D) NADPH 
E) glycolate 
A) ATP 
B) O2 
C) CO2 
D) NADPH 
E) glycolate

Question 11

2-phosphoglycolate is converted into glycolate by an enzyme in the ________.

Accepted Answer

A) peroxisome 
B) glyoxysome 
C) stroma 
D) thylakoid disk 
E) thylakoid membrane 
A) peroxisome 
B) glyoxysome 
C) stroma 
D) thylakoid disk 
E) thylakoid membrane

Question 12

The rate of photosynthetic CO2 fixation _____ and the rate of the release of CO2 by photorespiration _______ when _____ plants are grown in a closed container.

Accepted Answer

A) decreases,increases,C3 
B) increases,decreases,C3 
C) decreases,increases,C4 
D) decreases,decreases,C3 
E) increases,increases,C3 
A) decreases,increases,C3 
B) increases,decreases,C3 
C) decreases,increases,C4 
D) decreases,decreases,C3 
E) increases,increases,C3

Question 13

What do sulfur bacteria use as a source of electrons in photosynthesis?

Accepted Answer

A) hydrogen sulfide 
B) water 
C) hydrogen sulfite 
D) carbon dioxide 
E) glucose 
A) hydrogen sulfide 
B) water 
C) hydrogen sulfite 
D) carbon dioxide 
E) glucose

Question 14

You are growing algae in culture and expose them to CO2 that contains radiolabeled oxygen.Where does the radiolabeled oxygen end up after photosynthesis?

Accepted Answer

A) water 
B) oxygen 
C) carbon dioxide 
D) carbohydrates 
E) carbon monoxide 
A) water 
B) oxygen 
C) carbon dioxide 
D) carbohydrates 
E) carbon monoxide

Question 15

Why is the process whereby O2 is added to RuBP called photorespiration?

Accepted Answer

A) because O2 is released and CO2 is taken up 
B) because CO2 is released and O2 is taken up 
C) because breathing is necessary 
D) because RuBP is released 
E) because it occurs in crop plants 
A) because O2 is released and CO2 is taken up 
B) because CO2 is released and O2 is taken up 
C) because breathing is necessary 
D) because RuBP is released 
E) because it occurs in crop plants

Question 16

Why are ATP synthase molecules located in nonappressed regions,where two membranes of the grana are not in close contact?

Accepted Answer

ATP synthase has a large porti

Question 17

Mercaptoethanol is a reagent that breaks disulfide linkages.If you were to treat Calvin cycle enzymes with this reagent,what effect might it conceivably have on them?

Accepted Answer

A) It might competitively inhibit them. 
B) It might noncompetitively inhibit them. 
C) It might split them in two pieces. 
D) It might activate them. 
E) It might deactivate them. 
A) It might competitively inhibit them. 
B) It might noncompetitively inhibit them. 
C) It might split them in two pieces. 
D) It might activate them. 
E) It might deactivate them.

Question 18

How can green light drive any photosynthesis given that chlorophyll,the major photosynthetic pigment,is green?

Accepted Answer

Chlorophyll is green and therefore refle

Question 19

What anatomical specialization is typical of C4 plants?

Accepted Answer

A) Mesophyll cells are scattered throughout the interior of the leaf. 
B) Bundle sheath cells are scattered throughout the interior of the leaf. 
C) C4 plants have two concentric cylinders of cells around their vascular tissue. 
D) The leaves are coated with extra waxy material. 
E) Rubisco floats free in the air spaces in the leaves of C4 plants. 
A) Mesophyll cells are scattered throughout the interior of the leaf. 
B) Bundle sheath cells are scattered throughout the interior of the leaf. 
C) C4 plants have two concentric cylinders of cells around their vascular tissue. 
D) The leaves are coated with extra waxy material. 
E) Rubisco floats free in the air spaces in the leaves of C4 plants.

Question 20

What group of organisms is responsible for most of the photosynthesis that occurs on Earth?

Accepted Answer

A) green plants 
B) phytoplankton 
C) fungi 
D) bacteria 
E) moss 
A) green plants 
B) phytoplankton 
C) fungi 
D) bacteria 
E) moss

Which of the following is not a usual component found in the stroma?

The outer membrane of the chloroplast contains _ like the outer membrane of __.

Calvin originally thought that the acceptor molecule for carbon dioxide during carbon fixation contained how many carbons?

Thylakoid membranes have ___________.

What substance is made in the mesophyll cells of CAM plants during the nighttime fixation of CO₂ and then stored in the cell's central vacuole?

The non-pigmented precursors of chloroplasts are called __________.

Algal cultures in sealed containers were exposed to radiolabeled [¹⁴C]O₂ for a brief incubation period.Soluble molecules were extracted from the algae and subjected to 2D-paper chromatography.How many carbons are found in the most predominant spot on the chromatogram?

About how many chlorophyll molecules are found in a single photosynthetic unit and how many of those chlorophyll molecules actually transfer electrons to an electron acceptor?

What is the minimum number of photons needed to make one molecule of O₂during photosynthesis?

What substance is attached to RuBP by Rubisco to make 2-phosphoglycolate?

2-phosphoglycolate is converted into glycolate by an enzyme in the ________.

The rate of photosynthetic CO₂ fixation _ and the rate of the release of CO₂ by photorespiration _ when ___ plants are grown in a closed container.

What do sulfur bacteria use as a source of electrons in photosynthesis?

You are growing algae in culture and expose them to CO₂ that contains radiolabeled oxygen.Where does the radiolabeled oxygen end up after photosynthesis?

Why is the process whereby O₂ is added to RuBP called photorespiration?

Why are ATP synthase molecules located in nonappressed regions,where two membranes of the grana are not in close contact?

Mercaptoethanol is a reagent that breaks disulfide linkages.If you were to treat Calvin cycle enzymes with this reagent,what effect might it conceivably have on them?

How can green light drive any photosynthesis given that chlorophyll,the major photosynthetic pigment,is green?

What anatomical specialization is typical of C₄ plants?

What group of organisms is responsible for most of the photosynthesis that occurs on Earth?

Introduction to the Study of Cell and Molecular Biology

The Chemical Basis of Life

Bioenergetics, Enzymes, and Metabolism

The Structure and Function of the Plasma Membrane

Aerobic Respiration and the Mitochondrion

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, Function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

The Nature of the Gene and the Genome

Gene Expression: From Transcription to Translation

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

Filters

Exam 6: Photosynthesis and the Chloroplast

Which of the following is not a usual component found in the stroma?

The outer membrane of the chloroplast contains _____ like the outer membrane of ______.

Calvin originally thought that the acceptor molecule for carbon dioxide during carbon fixation contained how many carbons?

Thylakoid membranes have ___________.

What substance is made in the mesophyll cells of CAM plants during the nighttime fixation of CO2 and then stored in the cell's central vacuole?

The non-pigmented precursors of chloroplasts are called __________.

Algal cultures in sealed containers were exposed to radiolabeled [14C]O2 for a brief incubation period.Soluble molecules were extracted from the algae and subjected to 2D-paper chromatography.How many carbons are found in the most predominant spot on the chromatogram?

About how many chlorophyll molecules are found in a single photosynthetic unit and how many of those chlorophyll molecules actually transfer electrons to an electron acceptor?

What is the minimum number of photons needed to make one molecule of O2 during photosynthesis?

What substance is attached to RuBP by Rubisco to make 2-phosphoglycolate?

2-phosphoglycolate is converted into glycolate by an enzyme in the ________.

The rate of photosynthetic CO2 fixation _____ and the rate of the release of CO2 by photorespiration _______ when _____ plants are grown in a closed container.

What do sulfur bacteria use as a source of electrons in photosynthesis?

You are growing algae in culture and expose them to CO2 that contains radiolabeled oxygen.Where does the radiolabeled oxygen end up after photosynthesis?

Why is the process whereby O2 is added to RuBP called photorespiration?

Why are ATP synthase molecules located in nonappressed regions,where two membranes of the grana are not in close contact?

Mercaptoethanol is a reagent that breaks disulfide linkages.If you were to treat Calvin cycle enzymes with this reagent,what effect might it conceivably have on them?

How can green light drive any photosynthesis given that chlorophyll,the major photosynthetic pigment,is green?

What anatomical specialization is typical of C4 plants?

What group of organisms is responsible for most of the photosynthesis that occurs on Earth?

Introduction to the Study of Cell and Molecular Biology

The Chemical Basis of Life

Bioenergetics, Enzymes, and Metabolism

The Structure and Function of the Plasma Membrane

Aerobic Respiration and the Mitochondrion

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, Function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

The Nature of the Gene and the Genome

Gene Expression: From Transcription to Translation

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

Filters

The outer membrane of the chloroplast contains _ like the outer membrane of __.

What substance is made in the mesophyll cells of CAM plants during the nighttime fixation of CO₂ and then stored in the cell's central vacuole?

Algal cultures in sealed containers were exposed to radiolabeled [¹⁴C]O₂ for a brief incubation period.Soluble molecules were extracted from the algae and subjected to 2D-paper chromatography.How many carbons are found in the most predominant spot on the chromatogram?

What is the minimum number of photons needed to make one molecule of O₂during photosynthesis?

The rate of photosynthetic CO₂ fixation _ and the rate of the release of CO₂ by photorespiration _ when ___ plants are grown in a closed container.

You are growing algae in culture and expose them to CO₂ that contains radiolabeled oxygen.Where does the radiolabeled oxygen end up after photosynthesis?

Why is the process whereby O₂ is added to RuBP called photorespiration?

What anatomical specialization is typical of C₄ plants?