Question 1

Humans are both ________.

Accepted Answer

A) heterotrophs and consumers 
B) heterotrophs and producers 
C) producers and decomposers 
D) autotrophs and producers 
A) heterotrophs and consumers 
B) heterotrophs and producers 
C) producers and decomposers 
D) autotrophs and producers A

Question 2

Which transition describes a possible order of cell respirations activities?

Accepted Answer

A) a product of the citric acid cycle enters glycolysis 
B) a product of glycolysis enters the electron transport chain 
C) a product of fermentation enters the citric acid cycle 
D) ATP enters the electron transport chain and ADP results 
A) a product of the citric acid cycle enters glycolysis 
B) a product of glycolysis enters the electron transport chain 
C) a product of fermentation enters the citric acid cycle 
D) ATP enters the electron transport chain and ADP results B

Question 3

Which metabolic pathway is common to both aerobic and anaerobic processes of sugar breakdown?

Accepted Answer

A) the citric acid cycle 
B) the electron transport chain 
C) conversion of pyruvic acid to lactic acid 
D) glycolysis 
A) the citric acid cycle 
B) the electron transport chain 
C) conversion of pyruvic acid to lactic acid 
D) glycolysis D

Question 4

The only stage of cell respiration that is not dependent on the other stages of cell respiration is ________.

Accepted Answer

A) the electron transport chain 
B) the citric acid cycle 
C) lactic acid fermentation 
D) glycolysis 
A) the electron transport chain 
B) the citric acid cycle 
C) lactic acid fermentation 
D) glycolysis

Question 5

-This figure is a model of cell respiration and like all models it has limitations. A serious limitation of this model is

Accepted Answer

A) glycolysis does not generally release products that go into the Acetyl CoA reactions 
B) there are no sugars that can go directly into glycolysis 
C) fatty acids must be broken down into smaller molecules to enter the Acetyl CoA reactions 
D) there are ATPs produced directly from the Acetyl CoA reactions 
A) glycolysis does not generally release products that go into the Acetyl CoA reactions 
B) there are no sugars that can go directly into glycolysis 
C) fatty acids must be broken down into smaller molecules to enter the Acetyl CoA reactions 
D) there are ATPs produced directly from the Acetyl CoA reactions

Question 6

Plant cells ________.

Accepted Answer

A) do not need chloroplasts because their mitochondria meet their energy needs 
B) have chloroplasts and mitochondria 
C) use carbon dioxide but do not use oxygen 
D) do not need mitochondria because their chloroplasts meet their energy needs 
A) do not need chloroplasts because their mitochondria meet their energy needs 
B) have chloroplasts and mitochondria 
C) use carbon dioxide but do not use oxygen 
D) do not need mitochondria because their chloroplasts meet their energy needs

Question 7

Photosynthetic organisms like grass are able to ________.

Accepted Answer

A) make all of their organic matter from organic molecules in the soil 
B) use water they take in through their leaves as a final electron acceptor 
C) turn light energy from sunlight into sugars 
D) use molecules in the air as a major source of carbon 
A) make all of their organic matter from organic molecules in the soil 
B) use water they take in through their leaves as a final electron acceptor 
C) turn light energy from sunlight into sugars 
D) use molecules in the air as a major source of carbon

Question 8

Photosynthetic organisms are ________.

Accepted Answer

A) producers that make all of their organic matter from organic molecules that they take in 
B) consumers that obtain organic molecules from other living organisms 
C) producers that make their own organic matter from inorganic molecules 
D) decomposers that obtain nutrients from the soil 
A) producers that make all of their organic matter from organic molecules that they take in 
B) consumers that obtain organic molecules from other living organisms 
C) producers that make their own organic matter from inorganic molecules 
D) decomposers that obtain nutrients from the soil

Question 9

-The figure above shows that ________.

Accepted Answer

A) amino acids can move directly into the electron transport chain 
B) cells can use sugars, fatty acids, and amino acids to produce ATP 
C) cells can produce ATP only from glucose 
D) cells can produce ATP from sugars and glycerol, but not fatty acids 
A) amino acids can move directly into the electron transport chain 
B) cells can use sugars, fatty acids, and amino acids to produce ATP 
C) cells can produce ATP only from glucose 
D) cells can produce ATP from sugars and glycerol, but not fatty acids

Question 10

Glycolysis results in ________.

Accepted Answer

A) the production of CO2 
B) the conversion of glucose to pyruvic acid 
C) a net loss of two ATPs per glucose molecule 
D) conversion of NADH to NAD+ 
A) the production of CO2 
B) the conversion of glucose to pyruvic acid 
C) a net loss of two ATPs per glucose molecule 
D) conversion of NADH to NAD+

Question 11

A process is referred to as aerobic if it requires ________.

Accepted Answer

A) oxygen 
B) carbon dioxide 
C) ATP 
D) carbohydrates 
A) oxygen 
B) carbon dioxide 
C) ATP 
D) carbohydrates

Question 12

The ultimate source of energy in food is ________.

Accepted Answer

A) the sun 
B) producers 
C) ATP 
D) consumers 
A) the sun 
B) producers 
C) ATP 
D) consumers

Question 13

Large amounts of oxygen gas first appeared in Earth's atmosphere about ________ of years ago.

Accepted Answer

A) thousands 
B) millions 
C) billions 
D) hundreds 
A) thousands 
B) millions 
C) billions 
D) hundreds

Question 14

Which statement is an accurate comparison of energy-yielding processes?

Accepted Answer

A) Oxygen is a product of cellular respiration; carbon dioxide is a product of photosynthesis. 
B) Lactic acid is a product of aerobic respiration; ethyl alcohol is a product of fermentation. 
C) Oxidation is the gain of electrons; reduction is the loss of electrons. 
D) Carbon dioxide is a product of aerobic respiration; lactic acid is a product of anaerobic respiration. 
A) Oxygen is a product of cellular respiration; carbon dioxide is a product of photosynthesis. 
B) Lactic acid is a product of aerobic respiration; ethyl alcohol is a product of fermentation. 
C) Oxidation is the gain of electrons; reduction is the loss of electrons. 
D) Carbon dioxide is a product of aerobic respiration; lactic acid is a product of anaerobic respiration.

Question 15

Electron transport takes place in the ________.

Accepted Answer

A) mitochondria 
B) chloroplasts 
C) cytoplasm 
D) ribosomes 
A) mitochondria 
B) chloroplasts 
C) cytoplasm 
D) ribosomes

Question 16

What must pyruvic acid be converted to before it can enter the citric acid cycle?

Accepted Answer

A) acetyl CoA 
B) lactic acid 
C) ethyl alcohol 
D) citric acid 
A) acetyl CoA 
B) lactic acid 
C) ethyl alcohol 
D) citric acid

Question 17

Which part of cellular respiration produces the most NADH?

Accepted Answer

A) electron transport chain 
B) citric acid cycle 
C) glycolysis 
D) fermentation 
A) electron transport chain 
B) citric acid cycle 
C) glycolysis 
D) fermentation

Question 18

-Examine the figure above. Most of the organic matter in the tree shown in the figure comes from ________.

Accepted Answer

A) water 
B) glucose 
C) the air 
D) the soil 
A) water 
B) glucose 
C) the air 
D) the soil

Question 19

When electrons move through a series of electron acceptor molecules in cellular respiration ________.

Accepted Answer

A) the electrons gain energy as they move from one electron acceptor to another 
B) oxygen is eventually reduced by the electrons in the formation of water 
C) the electrons release large amounts of energy each time they are transferred from one electron acceptor to another 
D) glucose is eventually reduced by the electrons in the formation of water 
A) the electrons gain energy as they move from one electron acceptor to another 
B) oxygen is eventually reduced by the electrons in the formation of water 
C) the electrons release large amounts of energy each time they are transferred from one electron acceptor to another 
D) glucose is eventually reduced by the electrons in the formation of water

Question 20

In cellular respiration, most ATP is DIRECTLY produced as a result of ________.

Accepted Answer

A) the movement of hydrogen ions across the inner mitochondrial membrane 
B) the citric acid cycle 
C) fermentation 
D) the electron transport chain 
A) the movement of hydrogen ions across the inner mitochondrial membrane 
B) the citric acid cycle 
C) fermentation 
D) the electron transport chain

Exam 6: Cellular Respiration: Obtaining Energy From Food

Humans are both ________.

Which transition describes a possible order of cell respirations activities?

Which metabolic pathway is common to both aerobic and anaerobic processes of sugar breakdown?

The only stage of cell respiration that is not dependent on the other stages of cell respiration is ________.

-This figure is a model of cell respiration and like all models it has limitations. A serious limitation of this model is

Plant cells ________.

Photosynthetic organisms like grass are able to ________.

Photosynthetic organisms are ________.

-The figure above shows that ________.

Glycolysis results in ________.

A process is referred to as aerobic if it requires ________.

The ultimate source of energy in food is ________.

Large amounts of oxygen gas first appeared in Earth's atmosphere about ________ of years ago.

Which statement is an accurate comparison of energy-yielding processes?

Electron transport takes place in the ________.

What must pyruvic acid be converted to before it can enter the citric acid cycle?

Which part of cellular respiration produces the most NADH?

-Examine the figure above. Most of the organic matter in the tree shown in the figure comes from ________.

When electrons move through a series of electron acceptor molecules in cellular respiration ________.

In cellular respiration, most ATP is DIRECTLY produced as a result of ________.

Learning About Life

Essential Chemistry for Biology

The Molecules of Life

A Tour of the Cell

The Working Cell

Photosynthesis: Using Light to Make Food

Cellular Reproduction: Cells From Cells

Patterns of Inheritance

The Structure and Function of Dna

How Genes Are Controlled

Dna Technology

How Populations Evolve

How Biological Diversity Evolves

The Evolution of Microbial Life

The Evolution of Plants and Fungi

The Evolution of Animals

An Introduction to Ecology and the Biosphere

Population Ecology

Communities and Ecosystems

Unifying Concepts of Animal Structure and Function

Nutrition and Digestion

Circulation and Respiration

The Bodys Defenses

Hormones

Reproduction and Development

Nervous, Sensory, and Locomotor Systems

The Life of a Flowering Plant

The Working Plant

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