Copy of CK12 Cellular Respiration (2/1/2024)

Last updated over 2 years ago

42 questions

Note from the author:

Instructions

CK12 2.25

1

CK12 2.26

1

CK12 2.26

1

CK12 2.27

1

CK12 2.28

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CK12 2.29

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Library

Copy of CK12 Cellular Respiration (2/1/2024)

Last updated over 2 years ago

42 questions

Note from the author:

As you read through the various CK12 Sections, highlight in your textbook where you found your answers. Each section is labeled according to the section in your textbook.

Instructions

As you read through the various CK12 Sections, highlight in your textbook where you found your answers. Each section is labeled according to the section in your textbook.

CK12 2.25

1

CK12 2.26

1

CK12 2.26

1

Draggable item		Corresponding Item

1

CK12 2.27

1

CK12 2.28

1

CK12 2.29

1

As you read through the various CK12 Sections, highlight in your textbook where you found your answers. Each section is labeled according to the section in your textbook.

As you read through the various CK12 Sections, highlight in your textbook where you found your answers. Each section is labeled according to the section in your textbook.

Which type of cellular respiration occurs in the presence of oxygen?

Aerobic respiration

Both aerobic and anaerobic respiration

Glycolysis

Anaerobic respiration

What is the initial process that both aerobic and anaerobic respiration begin with?

Electron transport

Glycolysis

Krebs cycle

ATP synthesis

Which process does not require oxygen to occur?

Glycolysis

Aerobic respiration

Krebs cycle

Electron transport

In the presence of oxygen, which processes produce a large amount of ATP?

Both Glycolysis and Krebs Cycle

Glycolysis

Anaerobic respiration

The Krebs cycle and electron transport

What type of bacteria gradually added oxygen to the atmosphere about 2-3 billion years ago?

E.coli

Salmonella

Cyanobacteria

Staphylococcus

What is the term for cellular respiration that proceeds in the presence of oxygen?

Anaerobic respiration

Krebs cycle

Glycolysis

Aerobic respiration

What do most organisms today make with oxygen?

Carbon dioxide

Glucose

Protein

ATP

After glycolysis, what two processes do cells follow to make more ATP?

Photosynthesis and transpiration

Mitosis and meiosis

Glycolysis and fermentation

Krebs cycle and electron transport

Stages of Cellular Respiration

Draggable item		Corresponding Item
Stage 2		glycolysis
Stage 3		Krebs cycle
Stage 1		electron transport

What is the general equation for cellular respiration?

C6H12O6 + 6CO2 → 6O2 + 6H2O + Chemical Energy (in ATP)

6O2 + 6CO2 → C6H12O6 + 6H2O + Energy (in ATP)

6O2 + 6H2O → C6H12O6 + 6CO2 + Energy (in ATP)

C6H12O6 + 6O2 → 6CO2 + 6H2O + Chemical Energy (in ATP)

Where does glycolysis occur in the cell?

Nucleus

Cytosol

Mitochondria

Endoplasmic Reticulum

Which stages of cellular respiration require oxygen?

Glycolysis and Krebs cycle

All stages

Electron transport and glycolysis

Krebs cycle and electron transport

What is the second stage of cellular respiration?

Glycolysis

Fermentation

Electron transport

Krebs cycle, also called the citric acid cycle

What is the space between the inner and outer membrane of a mitochondrion called?

Intermembrane space

Extracellular space

Intracellular space

Intramembrane space

Where does the Krebs cycle take place in the mitochondrion?

Inner membrane

Matrix

Intermembrane space

Outer membrane

In which part of the mitochondrion does the electron transport stage of cellular respiration occur?

Matrix

Inner membrane

Intermembrane space

Outer membrane

What distinguishes a mitochondrion's structure?

It has an inner and outer membrane

It has multiple interior membranes

It has only an outer membrane

It has no membrane

Where does the first stage of cellular respiration, glycolysis, occur?

In the mitochondria

In the ribosome

In the cytosol of the cytoplasm

In the nucleus of the cell

Does glycolysis require oxygen?

Only in the presence of nitrogen

Only in the absence of carbon dioxide

No

Yes

Why is glycolysis considered the most primitive pathway for making ATP?

Because it uses less energy

Because it produces less ATP

Because it is universal

Because it happens first

Which of these bacteria can survive in the presence of oxygen?

Clostridium tetani

Neither Clostridum tetani nor Lactobacillus acidophilus

Lactobacillus acidophilus

Both Clostridium tetani and Lactobacillus acidophilus

What does the term glycolysis mean?

Glucose merging

Glucose splitting

Glucose enlarging

Glucose heating

What molecules are produced from glucose in glycolysis?

Two molecules of glucose

Two molecules of pyruvate

Two molecules of ATP

Two molecules of water

In glycolysis, glucose is split into two pyruvate molecules. This releases energy, which is transferred to ATP. How many net ATP molecules are made during this stage of cellular respiration?

16

2

8

4

What kickstarts the Krebs cycle?

ATP from phosphorylation

Pyruvic acid from glycolysis

Carbon dioxide from respiration

Glucose from photosynthesis

How many carbon atoms make up citric acid?

Five

Four

Three

Six

What is the product of reaction between pyruvic acid and CoA?

ATP

Citric Acid

Acetyl-CoA

OAA

What does the third carbon from pyruvic acid combine with to form CO2?

Oxygen

Nitrogen

Hydrogen

Carbon

What does the Krebs cycle produce?

Pyruvic acid and ATP

NADH, ATP, and FADH2

OAA and glucose

Acetyl-CoA and carbon dioxide

What is another name for the Krebs cycle?

Glucose pathway

Oxaloacetate cycle

Citric acid cycle

Pyruvic acid cycle

What happens to the original glucose molecule during the Krebs Cycle?

It's changed into NADH

It is not involved in Krebs Cycle

It's synthesized into ATP

It's broken down completely

How many ATP molecules are formed after two Krebs Cycle turns (including from glycolysis)?

16 ATP

2 ATP

4 ATP

10 ATP

Which energy-carrier molecules are produced during the Krebs Cycle?

NADH, FADH2, glucose

ATP, NADH, FADH2

ATP, NAD, FADH

ADP, NAD+, FAD

What happens to the carbon atoms of the original glucose molecule during the Krebs Cycle?

Remain in glucose form

Combine with hydrogen to form water

Combine with oxygen to form carbon dioxide

Are released as energy

Where on the mitochondrion do the electron transport chains reside?

Intercellular space

Inner membrane of the mitochondrion

In the matrix

Outer membrane of the mitochondrion

What happens to high-energy electrons transported along the chains?

Their energy is captured

They break down into lower-energy electrons

They are expelled from the cell

They combine with oxygen

What is used to pump hydrogen ions across the inner membrane during cellular respiration?

Energy from ATP

Energy from carbon dioxide

Energy from glucose

Energy from high-energy electrons

From where to where are hydrogen ions pumped during cellular respiration?

From the matrix into the intermembrane space

From the matrix into the outer membrane

From the outer membrane into the matrix

From the intermembrane space into the matrix

What creates a greater concentration of hydrogen ions in the intermembrane space?

The pumping of hydrogen ions across the inner membrane

ADP and inorganic phosphate

Oxygen interaction with electrons

The ATP synthase

What is the role of ATP synthase in the process of ATP production?

Combines with oxygen to form water

Produces hydrogen ions

Acts as a channel protein and enzyme

Produces NADH in the cytoplasm

Why is oxygen needed in the process of ATP production?

For the 'spent' electrons to combine with and form water

To act as a channel protein

To pump hydrogen ions across the membrane

To create ATP directly

How much total ATP is produced by 2 FADH2 in the electron transport system?

8 total ATP

6 total ATP

2 total ATP

Which type of cellular respiration occurs in the presence of oxygen?

Aerobic respiration

Both aerobic and anaerobic respiration

Glycolysis

Anaerobic respiration

What is the initial process that both aerobic and anaerobic respiration begin with?

Electron transport

Glycolysis

Krebs cycle

ATP synthesis

Which process does not require oxygen to occur?

Glycolysis

Aerobic respiration

Krebs cycle

Electron transport

In the presence of oxygen, which processes produce a large amount of ATP?

Both Glycolysis and Krebs Cycle

Glycolysis

Anaerobic respiration

The Krebs cycle and electron transport

What type of bacteria gradually added oxygen to the atmosphere about 2-3 billion years ago?

E.coli

Salmonella

Cyanobacteria

Staphylococcus

What is the term for cellular respiration that proceeds in the presence of oxygen?

Anaerobic respiration

Krebs cycle

Glycolysis

Aerobic respiration

What do most organisms today make with oxygen?

Carbon dioxide

Glucose

Protein

ATP

After glycolysis, what two processes do cells follow to make more ATP?

Photosynthesis and transpiration

Mitosis and meiosis

Glycolysis and fermentation

Krebs cycle and electron transport

Stages of Cellular Respiration

Stage 2

 glycolysis

Stage 3

 Krebs cycle

Stage 1

electron transport

What is the general equation for cellular respiration?

C6H12O6 + 6CO2 → 6O2 + 6H2O + Chemical Energy (in ATP)

6O2 + 6CO2 → C6H12O6 + 6H2O + Energy (in ATP)

6O2 + 6H2O → C6H12O6 + 6CO2 + Energy (in ATP)

C6H12O6 + 6O2 → 6CO2 + 6H2O + Chemical Energy (in ATP)

Where does glycolysis occur in the cell?

Nucleus

Cytosol

Mitochondria

Endoplasmic Reticulum

Which stages of cellular respiration require oxygen?

Glycolysis and Krebs cycle

All stages

Electron transport and glycolysis

Krebs cycle and electron transport

What is the second stage of cellular respiration?

Glycolysis

Fermentation

Electron transport

Krebs cycle, also called the citric acid cycle

What is the space between the inner and outer membrane of a mitochondrion called?

Intermembrane space

Extracellular space

Intracellular space

Intramembrane space

Where does the Krebs cycle take place in the mitochondrion?

Inner membrane

Matrix

Intermembrane space

Outer membrane

In which part of the mitochondrion does the electron transport stage of cellular respiration occur?

Matrix

Inner membrane

Intermembrane space

Outer membrane

What distinguishes a mitochondrion's structure?

It has an inner and outer membrane

It has multiple interior membranes

It has only an outer membrane

It has no membrane

Where does the first stage of cellular respiration, glycolysis, occur?

In the mitochondria

In the ribosome

In the cytosol of the cytoplasm

In the nucleus of the cell

Does glycolysis require oxygen?

Only in the presence of nitrogen

Only in the absence of carbon dioxide

No

Yes

Why is glycolysis considered the most primitive pathway for making ATP?

Because it uses less energy

Because it produces less ATP

Because it is universal

Because it happens first

Which of these bacteria can survive in the presence of oxygen?

Clostridium tetani

Neither Clostridum tetani nor Lactobacillus acidophilus

Lactobacillus acidophilus

Both Clostridium tetani and Lactobacillus acidophilus

What does the term glycolysis mean?

Glucose merging

Glucose splitting

Glucose enlarging

Glucose heating

What molecules are produced from glucose in glycolysis?

Two molecules of glucose

Two molecules of pyruvate

Two molecules of ATP

Two molecules of water

In glycolysis, glucose is split into two  pyruvate molecules. This releases energy, which is transferred to ATP. How many net ATP molecules are made during this stage of cellular respiration? 

16

2

8

4

What kickstarts the Krebs cycle?

ATP from phosphorylation

Pyruvic acid from glycolysis

Carbon dioxide from respiration

Glucose from photosynthesis

How many carbon atoms make up citric acid?

Five

Four

Three

Six

What is the product of reaction between pyruvic acid and CoA?

ATP

Citric Acid

Acetyl-CoA

OAA

What does the third carbon from pyruvic acid combine with to form CO2?

Oxygen

Nitrogen

Hydrogen

Carbon

What does the Krebs cycle produce?

Pyruvic acid and ATP

NADH, ATP, and FADH2

OAA and glucose

Acetyl-CoA and carbon dioxide

What is another name for the Krebs cycle?

Glucose pathway

Oxaloacetate cycle

Citric acid cycle

Pyruvic acid cycle

What happens to the original glucose molecule during the Krebs Cycle?

It's changed into NADH

It is not involved in Krebs Cycle

It's synthesized into ATP

It's broken down completely

How many ATP molecules are formed after two Krebs Cycle turns (including from glycolysis)?

16 ATP

2 ATP

4 ATP

10 ATP

Which energy-carrier molecules are produced during the Krebs Cycle?

NADH, FADH2, glucose

ATP, NADH, FADH2

ATP, NAD, FADH

ADP, NAD+, FAD

What happens to the carbon atoms of the original glucose molecule during the Krebs Cycle?

Remain in glucose form

Combine with hydrogen to form water

Combine with oxygen to form carbon dioxide

Are released as energy

Where on the mitochondrion do the electron transport chains reside?

Intercellular space

Inner membrane of the mitochondrion

In the matrix

Outer membrane of the mitochondrion

What happens to high-energy electrons transported along the chains?

Their energy is captured

They break down into lower-energy electrons

They are expelled from the cell

They combine with oxygen

What is used to pump hydrogen ions across the inner membrane during cellular respiration?

Energy from ATP

Energy from carbon dioxide

Energy from glucose

Energy from high-energy electrons

From where to where are hydrogen ions pumped during cellular respiration?

From the matrix into the intermembrane space

From the matrix into the outer membrane

From the outer membrane into the matrix

From the intermembrane space into the matrix

What creates a greater concentration of hydrogen ions in the intermembrane space?

The pumping of hydrogen ions across the inner membrane

ADP and inorganic phosphate

Oxygen interaction with electrons

The ATP synthase

What is the role of ATP synthase in the process of ATP production?

Combines with oxygen to form water

Produces hydrogen ions

Acts as a channel protein and enzyme

Produces NADH in the cytoplasm

Why is oxygen needed in the process of ATP production?

For the 'spent' electrons to combine with and form water

To act as a channel protein

To pump hydrogen ions across the membrane

To create ATP directly

How much total ATP is produced by 2 FADH2 in the electron transport system?

8 total ATP

6 total ATP

2 total ATP

4 total ATP