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Biology 157 > Chapter Three Reading Quiz > Flashcards

Chapter Three Reading Quiz Flashcards

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1
Q

The level of protein structure that is the sequence of amino acids is

A. secondary
B. tertiary
C. quaternary
D. primary

A

D. primary

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2
Q

Of the following polysaccharides, the only one that is NOT usable for energy by animals is

A. starches such as amylose
B. glycogen
C. cellulose

A

C. cellulose

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3
Q

The chemical difference between fats and oil is that

A. fats have more fatty acids than oils
B. fats have nitrogen functional groups but oils do not
C. The fatty acids of fats are more saturated than the fatty acids of oils
D. Fats are more reactive than oils

A

C. The fatty acids of fats are more saturated than the fatty acids of oils

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4
Q

The subunits of organic molecules are

A. homomers
B. singumers
C. monomers
D. unimers

A

C. monomers

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5
Q

Sucrose is made of

A. 2 glucose
B. glucose and galactose
C. glucose and fructose
D. glucose and maltose

A

C. glucose and fructose

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6
Q

Proteins include

A. fats, oils, and steroids
B. cellulose and chitin
C. enzymes
D. DNA, RNA, and ATP

A

C. enzymes

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7
Q

Nucleic acids include

A. DNA, RNA, and ATP
B. Fats, oils, and steroids
C. enzymes
D. cellulose and chitin

A

A. DNA, RNA, and ATP

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8
Q

Nonpolar and uncharged atoms and molecules are

A. hydrophobic
B. hydrophilic

A

A. hydrophobic

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9
Q

A major difference between carbohydrates and lipids is that carbohydrates

A. are held together by disulfide bonds, and lipids are not
B. are generally linear while lipids generally form ring structures
C. contain phosphorus and lipids do not
D. have a ratio of H:O of about 2:1; in lipids this ratio is much higher

A

D. have a ratio of H:O of about 2:1; in lipids this ratio is much higher

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10
Q

Lipids include

A. enzymes
B. cellulose and chitin
C. DNA, RNA, and ATP
D. fats, oils, and steroids

A

D. fats, oils, and steroids

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11
Q

Carbohydrates include

A. DNA, RNA, and ATP
B. enzymes
C. cellulose and chitin
D. fats, oils, and steroids

A

C. cellulose and chitin

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12
Q

5-carbon sugar, at least one phosphate group and a nitrogen-containing base

A

All nucleotides contain a

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13
Q

The part of an organic molecule that determines its chemical characteristics is the

A. carbon backbone
B. functional groups
C. hydrogen atoms

A

B. functional groups

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14
Q

Of the following polysaccharides, the only one that is NOT usable for energy by animals is

A. cellulose
B. starches such as amylose
C. glycogen

A

A. cellulose

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15
Q

The only carbohydrate that contains nitrogen is

A.  glycogen 
B. amylose 
C. chitin 
D. sucrose 
E. cellulose
A

C. chitin

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16
Q

The physical difference between fats and oils is that

A. fats store more calories per gram than oils
B. Fats are solid at room temperature; oils are liquid
C. fats are liquid at room temperature; oils are solid
D. fats are more reactive than oils

A

C. fats are liquid at room temperature; oils are solid

17
Q

Proteins that move molecules and ions across cell membranes are

A. structural proteins
B. transport proteins
C. enzymes
D. nutrient storage proteins

A

B. transport proteins

18
Q

In hydrolysis,

A. one organic molecule is split apart, and water is removed
B. two organic molecules form a covalent bond, and water is added
C. two organic molecules form a covalent bond, and water is removed
D. one organic molecule is split apart, and water is added

A

C. two organic molecules form a covalent bond, and water is removed

19
Q

Lactose is made of

A. glucose and fructose
B. 2 glucose
C. glucose and galactose
D. glucose and maltose

A

C. glucose and galactose

20
Q

A characteristic shared by many organic molecules is

A. one or more hydroxyl groups
B. a carbon backbone
C. several nitrogen atoms
D. one or more oxygen atoms

A

B. a carbon backbone

21
Q

Disulfide (sulfur to sulfur) bonds help maintain a protein’s

A. linear structure
B. planar structure
C. 3-D structure

A

C. 3-D structure

22
Q

Cholesterol is a lipid belonging to the category of

A. waxes
B. fats
C. oils
D. steroids

A

D. steroids

Biology 157 (9 decks)

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