Chapter Three Reading Quiz Flashcards
The level of protein structure that is the sequence of amino acids is
A. secondary
B. tertiary
C. quaternary
D. primary
D. primary
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
C. cellulose
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
C. The fatty acids of fats are more saturated than the fatty acids of oils
The subunits of organic molecules are
A. homomers
B. singumers
C. monomers
D. unimers
C. monomers
Sucrose is made of
A. 2 glucose
B. glucose and galactose
C. glucose and fructose
D. glucose and maltose
C. glucose and fructose
Proteins include
A. fats, oils, and steroids
B. cellulose and chitin
C. enzymes
D. DNA, RNA, and ATP
C. enzymes
Nucleic acids include
A. DNA, RNA, and ATP
B. Fats, oils, and steroids
C. enzymes
D. cellulose and chitin
A. DNA, RNA, and ATP
Nonpolar and uncharged atoms and molecules are
A. hydrophobic
B. hydrophilic
A. hydrophobic
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
D. have a ratio of H:O of about 2:1; in lipids this ratio is much higher
Lipids include
A. enzymes
B. cellulose and chitin
C. DNA, RNA, and ATP
D. fats, oils, and steroids
D. fats, oils, and steroids
Carbohydrates include
A. DNA, RNA, and ATP
B. enzymes
C. cellulose and chitin
D. fats, oils, and steroids
C. cellulose and chitin
5-carbon sugar, at least one phosphate group and a nitrogen-containing base
All nucleotides contain a
The part of an organic molecule that determines its chemical characteristics is the
A. carbon backbone
B. functional groups
C. hydrogen atoms
B. functional groups
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. cellulose
The only carbohydrate that contains nitrogen is
A. glycogen B. amylose C. chitin D. sucrose E. cellulose
C. chitin
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
C. fats are liquid at room temperature; oils are solid
Proteins that move molecules and ions across cell membranes are
A. structural proteins
B. transport proteins
C. enzymes
D. nutrient storage proteins
B. transport proteins
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
C. two organic molecules form a covalent bond, and water is removed
Lactose is made of
A. glucose and fructose
B. 2 glucose
C. glucose and galactose
D. glucose and maltose
C. glucose and galactose
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
B. a carbon backbone
Disulfide (sulfur to sulfur) bonds help maintain a protein’s
A. linear structure
B. planar structure
C. 3-D structure
C. 3-D structure
Cholesterol is a lipid belonging to the category of
A. waxes
B. fats
C. oils
D. steroids
D. steroids
