Exam 3: Chemistry of Life

Use the molecule of ethanol shown below to match the numbers with the questions they answer.Numbers may be used more than once or not at all. -How many valence electrons are in each carbon atom?

(Multiple Choice)

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Question 41

A researcher in a laboratory tests a food item and identifies protein in it.The food item must also contain

(Multiple Choice)

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Question 42

Of the following values,which indicates the MOST basic pH?

(Multiple Choice)

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Question 43

Oil and water do not mix well because

(Multiple Choice)

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Question 44

In making her morning tea,Dorothy drops a sugar cube into some hot water.She stirs the mixture but no longer sees the sugar cube at the bottom of her mug.Based on her observation of sugar dissolving in hot water,she can properly conclude that the sugar is

(Multiple Choice)

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Question 45

When calcium (Ca⁺)and chloride (Cl⁻)interact with one another,they bond using ________ bonds.

(Multiple Choice)

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Question 46

Which of the following is an organic compound?

(Multiple Choice)

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Question 47

There are four major classes of macromolecules that are found in living systems and each uses a carbon skeleton as its structural backbone.Why is carbon regularly assembled to make important biological molecules?

(Essay)

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Question 48

After giving a baby a bath,a parent applies baby oil to their child's skin.How does the baby oil help the baby's skin to retain moisture throughout the day? Explain the chemical basis of water retention in this example.

(Essay)

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Question 49

Atoms in a single molecule of methane,CH₄,share electrons.Methane is formed by bonds joining atoms.

(Multiple Choice)

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Question 50

A carwash attendant offers to treat Martin's windshield with a protective agent.This substance coats the glass,causing beads of water to easily roll off during a rain shower.Which of the following must be correct about the protective agent?

(Multiple Choice)

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Question 51

Which of the following is the largest in size?

(Multiple Choice)

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Question 52

Match the type of bond associated with each description.Terms may be used more than once. -A weak electrical attraction that holds individual water molecules together.

(Multiple Choice)

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Question 53

The class of macromolecules that do not form true polymers are the ________.

(Short Answer)

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Question 54

The pH scale measures the

(Multiple Choice)

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Question 55

Which of the following pieces of evidence would best demonstrate that a bacterium found on an asteroid originated in outer space?

(Multiple Choice)

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Question 56

The highest concentration of free hydrogen ions is found in

(Multiple Choice)

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Question 57

Which of the images shown below illustrates both hydrogen bonds and covalent bonds?

(Multiple Choice)

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Question 58

Monomers that can be commonly made from components in Earth's atmosphere are

(Multiple Choice)

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Question 59

How many different amino acids are used to build proteins?

(Multiple Choice)

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Question 60

Showing 41 - 60 of 102

Exam 3: Chemistry of Life

Use the molecule of ethanol shown below to match the numbers with the questions they answer.Numbers may be used more than once or not at all. -How many valence electrons are in each carbon atom?

A researcher in a laboratory tests a food item and identifies protein in it.The food item must also contain

Of the following values,which indicates the MOST basic pH?

Oil and water do not mix well because

In making her morning tea,Dorothy drops a sugar cube into some hot water.She stirs the mixture but no longer sees the sugar cube at the bottom of her mug.Based on her observation of sugar dissolving in hot water,she can properly conclude that the sugar is

When calcium (Ca⁺)and chloride (Cl⁻)interact with one another,they bond using ________ bonds.

Which of the following is an organic compound?

There are four major classes of macromolecules that are found in living systems and each uses a carbon skeleton as its structural backbone.Why is carbon regularly assembled to make important biological molecules?

After giving a baby a bath,a parent applies baby oil to their child's skin.How does the baby oil help the baby's skin to retain moisture throughout the day? Explain the chemical basis of water retention in this example.

Atoms in a single molecule of methane,CH₄,share electrons.Methane is formed by ________ bonds joining ________ atoms.

A carwash attendant offers to treat Martin's windshield with a protective agent.This substance coats the glass,causing beads of water to easily roll off during a rain shower.Which of the following must be correct about the protective agent?

Which of the following is the largest in size?

Match the type of bond associated with each description.Terms may be used more than once. -A weak electrical attraction that holds individual water molecules together.

The class of macromolecules that do not form true polymers are the ________.

The pH scale measures the

Which of the following pieces of evidence would best demonstrate that a bacterium found on an asteroid originated in outer space?

The highest concentration of free hydrogen ions is found in

Which of the images shown below illustrates both hydrogen bonds and covalent bonds?

Monomers that can be commonly made from components in Earth's atmosphere are

How many different amino acids are used to build proteins?

The Nature of Science

Evaluating Scientific Claims

Life Is Cellular

How Cells Work

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

What Genes Are

How Genes Work

Evidence for Evolution

Mechanisms of Evolution

Adaptation and Species

The History of Life

Bacteria and Archaea

Plants, Fungi, and Protists

Animals and Human Evolution

General Principles of Ecology

Growth of Populations

Communities of Organisms

Ecosystems

Filters

Atoms in a single molecule of methane,CH₄,share electrons.Methane is formed by bonds joining atoms.