Le Lesson 1.7 Hw

  • NGSS
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1. Carbon dioxide makes up less than 1 percent of Earth's atmosphere, and oxygen makes up about 20 percent. These percentages are maintained most directly by

Explanation

respiration and photosynthesis both use carbon dioxide and oxygen, and that keeps them in check.

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About This Quiz
Le Lesson 1.7 Hw - Quiz

These questions deal with macromolecules, scientific method, cellular respiration, and photosynthesis.
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2. The graphs below show the changes in the rela- tive concentrations of two gases in the air surrounding a group of mice.       Which process in the mice most likely accounts for the changes shown?

Explanation

Respiration consumes (uses up) oxygen and produces (makes more) carbon dioxide.

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3. The production of energy-rich ATP molecules is the direct result of

Explanation

Respiration makes ATP, which is energy-rich. The answer had RESPIRATION in it and also mentioned energy.

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4. Researchers performing a well-designed experiment should base their conclusions on 

Explanation

Experiments must be performed multiple times. The hypothesis is TESTED, not concluded upon.

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5. The flow of energy through an ecosystem involves many energy transfers. The diagram below summarizes the transfer of energy that eventually powers muscle activity. The process of cellular respiration is represented by

Explanation

respiration is converting food (glucose) into energy in the form of ATP.

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6. The diagram below represents events associated with a biochemical process that occurs in some organisms.  Which statement concerning this process is correct?

Explanation

PHOTOSYNTHESIS: sun and CO2 enter the plant and oxygen leaves. CHECK YOUR NOTES.

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7. In plants, simple sugars are least likely to be

Explanation

amino acids make up proteins, not sugars. check your table.

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Carbon dioxide makes up less than 1 percent of Earth's atmosphere, and...
The graphs below show the changes in the rela- tive concentrations of...
The production of energy-rich ATP molecules is the direct result of
Researchers performing a well-designed experiment should base their...
The flow of energy through an ecosystem involves many energy...
The diagram below represents events associated with a biochemical...
In plants, simple sugars are least likely to be
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