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BIO 200 Exam 1 with Complete Solutions
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BIO 200 Exam 1 with Complete Solutions
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BIO 200 Exam 1 with Complete SolutionsA 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 - ANSWER-e. Endergonic
A metabolic pathway that breaks compounds down (like cellular respiration) is:
a. Anabolic
b. Catabolic
c. Steroidal
d. Random
e. Endergonic - ANSWER-b. Catabolic
A scientific observation that has withstood many attempts to falsify it, and is generally
accepted as truth is called a(n): a. Fact
b. Theory
c. Hypothesis
d. Statement
e. Axiom - ANSWER-b. Theory
All of the following are required for photosynthesis EXCEPT:
a. Water
b. Oxygen
c. Light
d. CO2
e. All of the above are required for photosynthesis - ANSWER-b. Oxygen
An atom with an unequal number of protons and electrons is called a(n):
a. Positron
b. Isotope
c. Neutron
d. Ion
e. Megatron - ANSWER-d. Ion
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 - ANSWER-b. The saltwater is hypertonic
, How does a polar substance most likely cross the cell membrane, moving down its
concentration gradient?
a. Active transport
b. Facilitated diffusion
c. Cotransport
d. Diffusion
e. Endocytosis - ANSWER-b. Facilitated diffusion
How many different kinds of nucleotides are there in DNA?
a. 3
b. 4
c. 20
d. Hundreds
e. Millions - ANSWER-b. 4
How much ATP is produced per molecule of glucose in the Krebs cycle?
a. 32
b. 0
c. 2
d. 36
e. 4 - ANSWER-c. 2
How much net ATP is made during glycolysis, per molecule of glucose?
a. 32
b. 8
c. 2
d. 0
e. 36 - ANSWER-c. 2
If a cell is placed in a hypertonic solution, what will happen to it?
a. It will shrivel as solutes move out of the cell
b. It will swell as solutes move into the cell
c. It will shrivel as water moves out of the cell
d. It will swell as water moves into the cell
e. Nothing will happen, because the membrane is impermeable - ANSWER-c. It will
shrivel as water moves out of the cell
Lithium has an atomic number of 3. All of the following are lithium atoms EXCEPT:
a. 3 protons; 3 neutrons; 3 electrons
b. 3 protons; 2 neutrons; 3 electrons
c. 3 protons; 2 neutrons; 2 electrons
d. 3 protons; 3 neutrons; 2 electrons
e. All of the above are lithium atoms - ANSWER-e. All of the above are lithium atoms
Many hormones are made up of sterols, which belong to which class of biomolecules?
a. Lipids
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