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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 8
Download Biology Ch 8 Exam PDF eBook
30 Pages
2014
English US
Educational Materials



Sample Questions from the Chapter 8 Exam

Question: Where does the first part of the light reaction take place?

Choices:

in the Stroma

Outside the Chloroplasts

in the Thylakoid Membranes

Only in Chlorophyll Molecules

Question: What is a product of the Calvin cycle?

Choices:

Oxygen Gax

ATP

Sugar

Carbon Dioxide Gas

Question: The role of chlorophyll in photosynthesis is to

Choices:

Absorb Light Energy

Do nothing; chlorophyll is unimportant in photosynthesis

Split water molecules

All of the above

Question: Which region of the visible spectrum is not absorbed well by chlorophyll?

Choices:

Blue

Violet

Green

Red

Question: Which part of photosynthesis is MOST closely associated with reaction in which carbon dioxide in the air is stored in a molecule of glucose?

Choices:

Light Reaction only

Calvin Cycle only

This occurs in both the Light Reaction and the Calvin Cycle

This docent occur in either reaction

Question: Products of the light reactions of photosynthesis that provide energy for the Calvin cycle are

Choices:

Oxygen and ATP

Water and Oxygen

ATP and NADPH

Oxygen and NADPH

Question: Plants take in energy by absorbing

Choices:

Sugars

Chlorophyll A

Heat

Light Energy

Question: The energy used in the Calvin cycle for the production of carbohydrate molecules comes from

Choices:

ATP made during cellular respiration

The Krebs Cycle

ATP made in the light reactions of photosynthesis

CO2 absorbed during the last stage of photosynthesis

Question: Plants gather the sun's energy with specific light-absorbing molecules called

Choices:

Pigments

Thylakoids

Glucose

Grana

Question: Because it is so necessary in photosynthesis, one can say that the ultimate ORIGINAL source of energy for all living things on Earth is

Choices:

Glucose

The Sun

Water

Carbon Dioxide

Question: Heterotrophs are organisms that can

Choices:

Produce food from inorganic molecules and sunlight

Survive without energy

Consume other organisms for energy

Carry out either photosynthesis or chemosyntheiss

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Prateek Ashtikar
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