BIO 200 EXAM 1 QUESTIONS AND
ANSWERS
The most basic unit of life is the:
a. Individual
b. Organelle
c. Cell
d. Atom
e. Molecule - Correct Answers -c. Cell
Without the input of energy, organized systems will fall apart. This is consistent with:
a. The chemiosmotic model
b. The electron transport model
c. The first law of thermodynamics
d. The second law of thermodynamics
e. The third law of thermodynamics - Correct Answers -d. The second law of
thermodynamics
Which of the following would you NOT expect to see in a prokaryotic cell?
a. Cytoplasm
b. A nucleus
c. DNA
d. A cell membrane
e. Ribosomes - Correct Answers -b. A nucleus
Where do the oxygen atoms of the O2 produced in photosynthesis come from?
a. Lipids
b. Sunlight
c. CO2
d. Water
e. Glucose - Correct Answers -d. Water
A chemical reaction in which the products have more energy than the reactants is:
a. Entropic
b. Light-independent
c. Light-dependent
d. Exergonic
, e. Endergonic - Correct Answers -e. Endergonic
Which of the following is NOT a type of carbohydrate?
a. Glycogen
b. Starch
c. Cellulose
d. Sugar
e. Unsaturated fat - Correct Answers -e. Unsaturated fat
The Krebs Cycle occurs:
a. In the intermembrane space b. In the matrix
c. On the thylakoid membrane d. In the stroma
e. In the cytoplasm - Correct Answers -b. In the matrix
Which of the following is most likely to exist as a negative ion?
a. Sodium (Atomic number 11)
b. Boron (Atomic number 5)
c. Fluorine (Atomic number 9)
d. Carbon (Atomic number 6)
e. Oxygen (Atomic number 8) - Correct Answers -c. Fluorine (Atomic number 9)
What is the purpose of the strong proton gradient that is made in photosynthesis?
a. It reduces NAD+
b. It oxidizes NADP+
c. It oxidizes NADPH
d. It makes ATP
e. It breaks the bonds in CO2 - Correct Answers -d. It makes ATP
Which of the following classes of biomolecules contains carbon?
a. Nucleic acids
b. Lipids
c. Proteins
d. Carbohydrates
e. All of the above contain carbon - Correct Answers -e. All of the above contain carbon
Drinking saltwater can actually make you dehydrated. Why?
a. The saltwater is isotonic with the cells
b. The saltwater is hypertonic
c. Your cells are hypertonic
d. The saltwater is hypotonic
e. The salt will diffuse into the cells - Correct Answers -b. The saltwater is hypertonic
What is the purpose of fermentation?
a. Fermentation produces ATP
b. Fermentation reduces NAD+
c. Fermentation oxidizes NADH
d. Fermentation makes oxygen
ANSWERS
The most basic unit of life is the:
a. Individual
b. Organelle
c. Cell
d. Atom
e. Molecule - Correct Answers -c. Cell
Without the input of energy, organized systems will fall apart. This is consistent with:
a. The chemiosmotic model
b. The electron transport model
c. The first law of thermodynamics
d. The second law of thermodynamics
e. The third law of thermodynamics - Correct Answers -d. The second law of
thermodynamics
Which of the following would you NOT expect to see in a prokaryotic cell?
a. Cytoplasm
b. A nucleus
c. DNA
d. A cell membrane
e. Ribosomes - Correct Answers -b. A nucleus
Where do the oxygen atoms of the O2 produced in photosynthesis come from?
a. Lipids
b. Sunlight
c. CO2
d. Water
e. Glucose - Correct Answers -d. Water
A chemical reaction in which the products have more energy than the reactants is:
a. Entropic
b. Light-independent
c. Light-dependent
d. Exergonic
, e. Endergonic - Correct Answers -e. Endergonic
Which of the following is NOT a type of carbohydrate?
a. Glycogen
b. Starch
c. Cellulose
d. Sugar
e. Unsaturated fat - Correct Answers -e. Unsaturated fat
The Krebs Cycle occurs:
a. In the intermembrane space b. In the matrix
c. On the thylakoid membrane d. In the stroma
e. In the cytoplasm - Correct Answers -b. In the matrix
Which of the following is most likely to exist as a negative ion?
a. Sodium (Atomic number 11)
b. Boron (Atomic number 5)
c. Fluorine (Atomic number 9)
d. Carbon (Atomic number 6)
e. Oxygen (Atomic number 8) - Correct Answers -c. Fluorine (Atomic number 9)
What is the purpose of the strong proton gradient that is made in photosynthesis?
a. It reduces NAD+
b. It oxidizes NADP+
c. It oxidizes NADPH
d. It makes ATP
e. It breaks the bonds in CO2 - Correct Answers -d. It makes ATP
Which of the following classes of biomolecules contains carbon?
a. Nucleic acids
b. Lipids
c. Proteins
d. Carbohydrates
e. All of the above contain carbon - Correct Answers -e. All of the above contain carbon
Drinking saltwater can actually make you dehydrated. Why?
a. The saltwater is isotonic with the cells
b. The saltwater is hypertonic
c. Your cells are hypertonic
d. The saltwater is hypotonic
e. The salt will diffuse into the cells - Correct Answers -b. The saltwater is hypertonic
What is the purpose of fermentation?
a. Fermentation produces ATP
b. Fermentation reduces NAD+
c. Fermentation oxidizes NADH
d. Fermentation makes oxygen
