BIOL 133 -EXAM 1 questions with 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 - verified answers; 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 - verified answers; 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 - verified answers; 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 - verified answers; a. Nonpolar covalent
How many covalent bonds can a carbon atom make?
a. Two
b. Three
c. Four
d. Five - verified answers; 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 - verified answers; 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 - verified answers; b. Cellular signaling
Disulfide bridges help define a protein's............... structure
a. Primary
b. Secondary
c. Tertiary
d. Quaternary - verified answers; c. Tertiary
Which of the following is a lipid?
a. Cholesterol
b. Starch
c. Chitin
d. Glycogen - verified answers; 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 - verified answers; a.
Both DNA and RNA use adenine as one of their four bases
Why can humans digest starch, but not cellulose?
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 - verified answers; 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 - verified answers; 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 - verified answers; 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 - verified answers; a. Nonpolar covalent
How many covalent bonds can a carbon atom make?
a. Two
b. Three
c. Four
d. Five - verified answers; 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 - verified answers; 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 - verified answers; b. Cellular signaling
Disulfide bridges help define a protein's............... structure
a. Primary
b. Secondary
c. Tertiary
d. Quaternary - verified answers; c. Tertiary
Which of the following is a lipid?
a. Cholesterol
b. Starch
c. Chitin
d. Glycogen - verified answers; 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 - verified answers; a.
Both DNA and RNA use adenine as one of their four bases
Why can humans digest starch, but not cellulose?
