COLLEGE BIO 200 Practice Test
questions found in the back of
chapters in the textbook handouts
with answers
When a reaction goes from polar covalent to nonpolar covalent, what type of reaction
is this? - ANSWER-endergonic reaction
Define hydrophobic interactions - ANSWER-very weak interactions btwn nonpolar
molecules when exposed to an aqueous solvent
Define plasma membrane - ANSWER-a membrane that surrounds the cell,
separating it from the external environment and selectively regulating the passage of
molecules and ions into and out of the cell
What is selective permeability? - ANSWER-allows only certain entities to pass
What is a concentration gradient? - ANSWER-difference in concentration of a
dissolved substance across a membrane
What are the 2 types of passive transport? - ANSWER-1.) Diffusion (spontaneous
movement of a substance from one region to another from high to low concentration
2.) Facilitated Diffusion (uses the assistance of membrane proteins)
What are the 2 types of membrane proteins used in facilitated diffusion? - ANSWER-
1.) channel proteins (molecules go into pores)
2.) carrier proteins (molecules bound to one side, open close type situation and
conform to the specific sizes and shapes required to transport the molecules
What is required for active transport? - ANSWER-energy, protein pump
Define aquaporins - ANSWER-a type of channel protein that facilitates the
movement of water across a plasma membrane
Rank these molecules in terms of the highest potential energy storage - ANSWER-
1.) fats
2.) proteins
3.) carbs
Explain ATP hydrolysis and glycogen synthesis and how they relate to energy
coupling - ANSWER--ATP hydrolysis produces products of ADP and an inorganic
questions found in the back of
chapters in the textbook handouts
with answers
When a reaction goes from polar covalent to nonpolar covalent, what type of reaction
is this? - ANSWER-endergonic reaction
Define hydrophobic interactions - ANSWER-very weak interactions btwn nonpolar
molecules when exposed to an aqueous solvent
Define plasma membrane - ANSWER-a membrane that surrounds the cell,
separating it from the external environment and selectively regulating the passage of
molecules and ions into and out of the cell
What is selective permeability? - ANSWER-allows only certain entities to pass
What is a concentration gradient? - ANSWER-difference in concentration of a
dissolved substance across a membrane
What are the 2 types of passive transport? - ANSWER-1.) Diffusion (spontaneous
movement of a substance from one region to another from high to low concentration
2.) Facilitated Diffusion (uses the assistance of membrane proteins)
What are the 2 types of membrane proteins used in facilitated diffusion? - ANSWER-
1.) channel proteins (molecules go into pores)
2.) carrier proteins (molecules bound to one side, open close type situation and
conform to the specific sizes and shapes required to transport the molecules
What is required for active transport? - ANSWER-energy, protein pump
Define aquaporins - ANSWER-a type of channel protein that facilitates the
movement of water across a plasma membrane
Rank these molecules in terms of the highest potential energy storage - ANSWER-
1.) fats
2.) proteins
3.) carbs
Explain ATP hydrolysis and glycogen synthesis and how they relate to energy
coupling - ANSWER--ATP hydrolysis produces products of ADP and an inorganic
