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Photo depicts Earth from space.
This NASA image is a composite of several satellite-based views of Earth. To make the whole-Earth image, NASA scientists combine observations of different parts of the planet. (credit: NASA/GSFC/NOAA/USGS)

Viewed from space, Earth offers no clues about the diversity of life forms that reside there. The first forms of life on Earth are thought to have been microorganisms that existed for billions of years in the ocean before plants and animals appeared. The mammals, birds, and flowers so familiar to us are all relatively recent, originating 130 to 200 million years ago. Humans have inhabited this planet for only the last 2.5 million years, and only in the last 200,000 years have humans started looking like we do today.

Exam PDF eBook: 
Chapter 9
Download Biology Ch 9 Exam PDF eBook
32 Pages
2014
English US
Educational Materials



Sample Questions from the Chapter 9 Exam

Question: Why does cyanide kill people?

Choices:

It prevents the ETC from working correctly

People cannot create NADPh in glycolysis

It prevents pyretic acid from being created

None of the above

Question: Which of the following is NOT a product of the Krebs cycle?

Choices:

Alcohol

Carbon Dioxide

ATP

FADH2

Question: Which of the following is not part of cellular respiration?

Choices:

ETC

glycolysis

The Krebs cycle

the Calvin Cycle

Question: In the process of aerobic respiration, organisms use _________ and give off _________ .

Choices:

oxygen ; carbon dioxide

carbon dioxice ; oxygen

water ; carbon dioxide

oxygen ; oxygen

Question: With oxygen present, the Krebs cycle and the electron transport chain

Choices:

Produce most of the ATP needed for life

Allow organisms to avoid fermentation

Break down glucose to produce carbon dioxide, water, and ATP

All of the Above

Question: When glycolysis occurs,

Choices:

a molecule of glucose is split

two molecules of pyretic acid are made

some ATP is produced

All of the above

Question: Cellular respiration is called an aerobic process because it requires

Choices:

Light

Oxygen

Exercise

Glucose

Question: In aerobic cellular respiration, the majority of ATP is created during:

Choices:

Glycolysis

lactic acid fermentation

The Krebs cycle

The ETC

Question: In cellular respiration, a two-carbon molecule combines with a four-carbon molecule to form citric acid as part of

Choices:

glycolysis

carbon fixation

the Krebs cycle

the ETC

Question: At most, how many molecules of ATP can be produced per glucose molecule in aerobic cellular respiration?

Choices:

2

8

24

36

75

Question: Animals breathe in order to take in the carbon dioxide their cells need to perform cellular respiration.

Choices:

True

False

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