Question 1

During alcoholic fermentation,why is pyruvate converted to ethanol?

Accepted Answer

A)  to increase the efficiency of cellular respiration by producing additional molecules of ATP 
B)  to release O₂ as a by-product so that cellular respiration can continue 
C)  to create lactic acid that will stimulate muscle contraction 
D)  to recycle NADH back into NAD+ so that the cell can continue glycolysis 
A)  to increase the efficiency of cellular respiration by producing additional molecules of ATP 
B)  to release O₂ as a by-product so that cellular respiration can continue 
C)  to create lactic acid that will stimulate muscle contraction 
D)  to recycle NADH back into NAD+ so that the cell can continue glycolysis

Question 2

In which of the following functions does ATP NOT participate?

Accepted Answer

A)  synthesis of macromolecules 
B)  synthesis of water from hydrogen and oxygen 
C)  membrane transport 
D)  cytoskeletal organization 
A)  synthesis of macromolecules 
B)  synthesis of water from hydrogen and oxygen 
C)  membrane transport 
D)  cytoskeletal organization

Question 3

The NADH produced by the Krebs cycle donates electrons to the electron transport chain.

Accepted Answer

A) True 
 B)False

Question 4

During photosynthesis,energized electrons flow from ________ to ________.

Accepted Answer

A)  photosystem I; photosystem II 
B)  the reaction center; the antenna complex 
C)  photosystem II; photosystem I 
D)  the stroma; the intermembrane space 
A)  photosystem I; photosystem II 
B)  the reaction center; the antenna complex 
C)  photosystem II; photosystem I 
D)  the stroma; the intermembrane space

Question 5

Glycolysis occurs in a cell's

Accepted Answer

A)  nucleus. 
B)  chloroplast. 
C)  mitochondrion. 
D)  cytosol. 
A)  nucleus. 
B)  chloroplast. 
C)  mitochondrion. 
D)  cytosol.

Question 6

World-class sprinters typically do not breathe during the 9+ seconds it takes to complete a 100-meter race.What does this fact suggest about these runners' energy production?

Accepted Answer

A)  It must be mitochondrial, with oxygen provided by one big breath at the beginning of the sprint. 
B)  It must be mitochondrial, with oxygen provided by circulating hemoglobin that is already saturated with oxygen. 
C)  It must be glycolytic; the process is entirely anaerobic and the race will be over before NADH+ reserves are depleted. 
D)  It must be fermentative, which explains why most sprinters experience cramping after the race ends. 
A)  It must be mitochondrial, with oxygen provided by one big breath at the beginning of the sprint. 
B)  It must be mitochondrial, with oxygen provided by circulating hemoglobin that is already saturated with oxygen. 
C)  It must be glycolytic; the process is entirely anaerobic and the race will be over before NADH+ reserves are depleted. 
D)  It must be fermentative, which explains why most sprinters experience cramping after the race ends.

Question 7

During exercise,the increase in our respiration rate and heartbeat speed is driven by the need to replenish the oxygen used to support

Accepted Answer

A)  lactic acid fermentation. 
B)  carbon dioxide synthesis in our lungs. 
C)  oxidative phosphorylation in muscle cell mitochondria. 
D)  the dark reactions of photosynthesis. 
A)  lactic acid fermentation. 
B)  carbon dioxide synthesis in our lungs. 
C)  oxidative phosphorylation in muscle cell mitochondria. 
D)  the dark reactions of photosynthesis.

Question 8

You have shrunk to molecular size and find yourself in a chamber inside a chloroplast where protons are being pumped into another chamber.You are in the ________.

Accepted Answer

The answer of You have shrunk to molecular size and...

Question 9

Biologists believe that in the earliest version of photosynthesis,the energized photosystem electron simply cycled back to the chlorophyll molecule.Which of the following limitations would NOT be imposed by such a system?

Accepted Answer

A)  No molecular oxygen would be generated. 
B)  No electrons would be available to reduce the carbon in CO₂ . 
C)  Cells could produce ATP but not sugars. 
D)  Cells could produce O₂ but not sugars. 
A)  No molecular oxygen would be generated. 
B)  No electrons would be available to reduce the carbon in CO₂ . 
C)  Cells could produce ATP but not sugars. 
D)  Cells could produce O₂ but not sugars.

During alcoholic fermentation,why is pyruvate converted to ethanol?

In which of the following functions does ATP NOT participate?

The NADH produced by the Krebs cycle donates electrons to the electron transport chain.

During photosynthesis,energized electrons flow from to .

Glycolysis occurs in a cell's

World-class sprinters typically do not breathe during the 9+ seconds it takes to complete a 100-meter race.What does this fact suggest about these runners' energy production?

During exercise,the increase in our respiration rate and heartbeat speed is driven by the need to replenish the oxygen used to support

You have shrunk to molecular size and find yourself in a chamber inside a chloroplast where protons are being pumped into another chamber.You are in the ________.

Biologists believe that in the earliest version of photosynthesis,the energized photosystem electron simply cycled back to the chlorophyll molecule.Which of the following limitations would NOT be imposed by such a system?

The Nature of Science and the Characteristics of Life

The Chemistry of Life

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy, Metabolism, and Enzymes

Cell Division

Cancer and Human Health

Patterns of Inheritance

Chromosomes and Human Genetics

DNA and Genes

From Gene to Protein

DNA Technology

How Evolution Works

The Origin of Species

The Evolution of Biodiversity

Biological Diversity, Bacteria, and Archaea

Protista, Plantae, and Fungi

Animalia

The Biosphere

Growth of Populations

Animal Behavior

Ecological Communities

Ecosystems

Global Change

Filters

Exam 6: Photo Synthesis and Cellular Respiration

During alcoholic fermentation,why is pyruvate converted to ethanol?

In which of the following functions does ATP NOT participate?

The NADH produced by the Krebs cycle donates electrons to the electron transport chain.

During photosynthesis,energized electrons flow from ________ to ________.

Glycolysis occurs in a cell's

World-class sprinters typically do not breathe during the 9+ seconds it takes to complete a 100-meter race.What does this fact suggest about these runners' energy production?

During exercise,the increase in our respiration rate and heartbeat speed is driven by the need to replenish the oxygen used to support

You have shrunk to molecular size and find yourself in a chamber inside a chloroplast where protons are being pumped into another chamber.You are in the ________.

Biologists believe that in the earliest version of photosynthesis,the energized photosystem electron simply cycled back to the chlorophyll molecule.Which of the following limitations would NOT be imposed by such a system?

The Nature of Science and the Characteristics of Life

The Chemistry of Life

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy, Metabolism, and Enzymes

Cell Division

Cancer and Human Health

Patterns of Inheritance

Chromosomes and Human Genetics

DNA and Genes

From Gene to Protein

DNA Technology

How Evolution Works

The Origin of Species

The Evolution of Biodiversity

Biological Diversity, Bacteria, and Archaea

Protista, Plantae, and Fungi

Animalia

The Biosphere

Growth of Populations

Animal Behavior

Ecological Communities

Ecosystems

Global Change

Filters

During photosynthesis,energized electrons flow from to .