Cell theory was proposed by:
a. Anton van Leeuwenhoek and Robert Hooke
b. Robert Hooke and Theodor Schwann
c. Theodor Schwann and Rudolf Virchow
d. Louis Pasteur and Anton van Leeuwenhoek - Answer c. Theodor Schwann and Rudolf Virchow
Which of the following is not a function performed b...
BIOL 133 EXAM 1 QUESTIONS AND
CORRECT ANSWERS.
Cell theory was proposed by:
a. Anton van Leeuwenhoek and Robert Hooke
b. Robert Hooke and Theodor Schwann
c. Theodor Schwann and Rudolf Virchow
d. Louis Pasteur and Anton van Leeuwenhoek - Answer c. Theodor Schwann and Rudolf Virchow
Which of the following is not a function performed by proteins?
a. Regulating cell division
b. Storage of genetic information
c. Intracellular transport
d. Defense against foreign substances - Answer b. Storage of genetic information
The oxygen and hydrogen in a water molecule are joined by a polar covalent bond because:
a. The oxygen is more electronegative than the hydrogen
b. The hydrogen is more electronegative than the oxygen
c. The electronegativity of oxygen and hydrogen are roughly the same
d. Hydrogen bonding leads to areas of partial charge - Answer a. The oxygen is more electronegative
than the hydrogen
In a hydrophobic molecule, we will see an abundance of bonds
a. Nonpolar covalent
b. Polar covalent
,c. Ionic
d. Hydrogen - Answer a. Nonpolar covalent
How many covalent bonds can a carbon atom make?
a. Two
b. Three
c. Four
d. Five - Answer c. Four
Which of the following would you not find bound to the alpha carbon of an amino acid?
a. The R group
b. A hydrogen
c. An amine group
d. A hydroxyl group - Answer d. A hydroxyl group
Which of the following is a function of carbohydrates?
a. Catalysis of biochemical reactions
b. Cellular signaling
c. Storage of genetic information
d, All of the above - Answer b. Cellular signaling
Disulfide bridges help define a protein's............... structure
a. Primary
b. Secondary
c. Tertiary
, d. Quaternary - Answer c. Tertiary
Which of the following is a lipid?
a. Cholesterol
b. Starch
c. Chitin
d. Glycogen - Answer a. Cholesterol
Which is true about both DNA and RNA?
a. Both DNA and RNA use adenine as one of their four bases
b. The sugar used in the sugar-phosphate backbone is identical
c. DNA and RNA both have a free phosphate at the 3' end
d. Both structures always form anti-parallel double stranded helices - Answer a. Both DNA and RNA use
adenine as one of their four bases
Why can humans digest starch, but not cellulose?
a. Starch is made up of glucose, whereas cellulose is made up of galactose
b. Starch is made up of alpha-glucose, whereas cellulose is made up of beta-glucose
c. Starch is made up of beta-glucose, whereas cellulose is made up of alpha-glucose
d. Starch is made up of galactose, whereas cellulose is made up of glucose - Answer b. Starch is made
up of alpha-glucose, whereas cellulose is made up of beta-glucose
You have set up a semi-permeable membrane in a container. On the left side of the membrane, you add
a 300 mM sodium chloride solution. On the right side of the membrane, you add a 900 mM sodium
chloride solution. Net flow of water will be in which direction?
a. Left to right
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