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Exam 2: Chemical Basis of Life

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Question 51

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Apricots have a pH of 3.8. Therefore, they are ________.

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Question 52

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Which of the following is(are) ionizing radiation?

A) Cosmic radiation only
B) Gamma radiation only
C) Both cosmic radiation and gamma radiation
D) Neither cosmic nor gamma radiation

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Question 53

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In the body, oxygen

An acid is an electrolyte that releases hydroxide ions (OH⁻)in water.

The type of chemical bond formed when ions with opposite electrical charges attract is a(n)________ bond.

The opposite of a decomposition reaction is a ________ reaction.

A patient's blood test shows that their blood pH is 7.29. They are most likely experiencing

The amino acid sequence of a protein is its ________ structure.

Amino acids are building blocks of ________.

The symbol Na+ represents a sodium atom that has lost an electron. 

Consider the following list of commonly found items and their pH values: Baking Soda (8.3) , Battery Acid (1.0) , Beer (4.2) , Bleach (12.8) , Butter (6.1-6.4) , Coffee (5.0) , Egg Whites (7.6-8.0) , Grapes (3.5-4.5) , Milk of Magnesia (10.6) , Tomato (4.0-4.5) , Vinegar (2.2) , White Bread (5.0-6.0) Which of the following choices includes all acids?

Radioactive isotopes have stable nuclei. 

The first electron shell of an atom can hold a maximum of

Chemistry is important to the study of physiology because

Two negatively charged bromide (Br⁻)ions exist in solution. They will be attracted to each other and form an ionic bond.

A person with alkalosis has a blood pH less than 7.3.

Which of the following is not organic?

Glycogen is a complex carbohydrate that is obtained by eating plants.

An electrolyte ionizes in water.

A computerized tomography (CT) scan differs from a conventional X-ray image because it is