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AP 1 > Practice Quiz Q’s For Chapter 2 > Flashcards

Practice Quiz Q’s For Chapter 2 Flashcards

1
Q

_______________ are found in different energy levels outside the atom’s nucleus.

A

Electrons

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2
Q

_______________ are subatomic particles with no charge.

A

Neutrons

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3
Q

Atoms that share the same atomic number, but have different mass numbers are called ______________.

A

Isotopes

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4
Q

In a double covalent bond, _________________ of electrons are shared.

A

Two pairs

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5
Q

___________________bonding occurs between two atoms that share electrons equally.

A

non-polar covalent

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6
Q

________________bonds maintain the complex shapes of large molecules such as proteins and nucleic acids

A

Hydrogen

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7
Q

_______________bonding occurs when one atom transfers electrons to another.

A

Ionic

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8
Q

Substances containing _______________ bonds are water-soluble.

A

polar covalent

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9
Q

____________________reactions release energy.

A

Exergonic

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10
Q

The two primary factors influencing activation energy are temperature and __________________________.

A

concentration of reactants

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11
Q

In a ____________________reaction, products can be converted back into reactants.

A

Reversible

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12
Q

In a ___________________reaction, a water molecule is used to split a large molecule into smaller molecules

A

hydrolysis

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13
Q

An acid has a pH _____________ 7.

A

Less than

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14
Q

___________are chemical compounds that help the body maintain homeostasis by preventing drastic changes in the pH of body fluids.

A

Buffers

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15
Q

Glycogen and starch are examples of complex carbohydrates called ______________________.

A

Polysaccharides

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16
Q

_______________________ are the monomers of nucleic acids

A

Nucleotides

17
Q

__________________fats are triglycerides that contain only single covalent bonds between carbon atoms.

A

Saturated

18
Q

The particular sequence of amino acids found in a protein is its ________________ structure.

A

primary

19
Q

___________________are the most abundant lipids in the body.

A

Triglycerides

20
Q

____________protein found in connective tissues and skin.

A

Collagen

21
Q

The smallest unit of matter that retains the properties and characteristics of an element is the:

A

Atom

22
Q

An atom of one element is distinguished from an atom of another element by the number of:

A

protons in the nucleus

23
Q

A physician suspects a patient may have a thyroid tumor. Which of the following radioisotopes will help the physician confirm the initial diagnosis?

A

iodine-131

24
Q

Each molecule of oxygen gas is composed of two atoms of oxygen sharing two pairs of electrons equally. Which of the following best describes the chemical bond between the oxygen atoms?

A

double nonpolar covalent bond

25
Q

The sum of all the chemical reactions that occur in the body is called anabolism. (True or False)

A

False

26
Q

A solute that readily dissolves in water is

A

hydrophilic

27
Q

Which of the following is a monosaccharide that is used by cells to produce energy?

A

glucose

28
Q

This type of fatty acid contains more than one double bond in its hydrocarbon chain.

A

polyunsaturated

29
Q

Which of the following is NOT true about phospholipids?
a) They contain a glycerol backbone.
b) The head group is polar.
c) The molecule is an important part of cell membranes.
d) The tail groups are nonpolar.
e) They are a major form of energy storage.

A

E

30
Q

What are the nonpolar parts of phospholipids?

A

fatty acid tail groups

31
Q

This type of lipid is the body’s primary long-term energy storage molecule.

A

triglyceride

32
Q

This lipid is used by the body as a precursor for the production of steroid hormones.

A

cholesterol

33
Q

Which of the following is NOT a property of enzymes?
a) Enzymes are catalytic proteins.
b) Enzymes are highly specific.
c) Enzymes are efficient.
d) Enzymes are subject to a variety of cellular controls.
e) Enzymes are irreversibly changed by the reactions that they catalyze.

A

E

34
Q

Which of the following is a purine base?
a) cytosine b) guanine c) thymine d) uracil

A

B

35
Q

Which monomer is used to build RNA and DNA?

A

nucleotide

36
Q

Which of the following chemical elements present in the body is considered a trace element?

A

iodine

37
Q

Frying an egg causes the clear runny part of the egg to turn to white. This process is called

A

denaturation

38
Q

Does anabolism release large amounts of energy

A

No

AP 1 (24 decks)

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