AnswersKCPS Biology 2027The Chemistry of Life

The Chemistry of Life — Test Answers

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A scientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas. Which group of statements best describe all of the materials he is using in the investigation?

A
They are each compounds. Each of the compounds is made of atoms. All of the atoms are made of matter.
B
They are all elements. Some contain molecules of the same type of atom. Some contain different types of atoms.
C
They are each made of matter. Some are compounds and some are elements. They all contain atoms.
D
They are each made of matter. Some are compounds made of one type of element. Some are pure atoms.
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What is the best conclusion based on this data?

A
The human body stores approximately 1,000 kcal of glucose.
B
Fat molecules contain more energy-containing bonds than simple sugars.
C
A gram of glycogen has twice as much energy as a gram of fat.
D
Blood is a primary location for energy storage.
23

Which type of lipid is shown?

A
a saturated triglyceride
B
an unsaturated triglyceride
C
a saturated phospholipid
D
an unsaturated phospholipid
24

Organisms contain different levels of organization within their bodies. Arachnoidiscus ehrenbergi, pictured, is a single-celled organism that is part of the group of algae known as diatoms. Which level of organization is seen in both Arachnoidiscus ehrenbergi and the human stomach?

A
cell
B
tissue
C
organ
D
organ system
25

What can you conclude from the graph?

A
The reaction that causes a firework to explode requires less energy to start, and occurs more rapidly than the reaction that causes a candle to burn.
B
The reaction that causes a firework to explode requires less energy to start, and occurs less rapidly than the reaction that causes a candle to burn.
C
The reaction that causes a firework to explode requires more energy to start, and occurs more rapidly than the reaction that causes a candle to burn.
D
The reaction that causes a firework to explode requires more energy to start, and occurs less rapidly than the reaction that causes a candle to burn.

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