Phytophthora infestans is a pathogen that attacks a variety of plants. This pathogen is an example of what type of protist?
A. fungus-like protists
B. periphyton
C. plankton
D. algae
E. protozoans
Answer: A
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Identify the stage of cellular respiration that occurs entirely outside of the mitochondria.
A. Electron transport chain B. Citric acid cycle C. Glycolysis D. All of the above occur outside of the mitochondria
A patient was involved a serious accident and lost a large quantity of blood. In an attempt to replenish body fluids, distilled water—equal to the volume of blood lost—is added to the blood directly via one of his veins
A patient was involved a serious accident and lost a large quantity of blood. In an attempt to replenish body fluids, distilled waterâ€"equal to the volume of blood lostâ€"is added to the blood directly via one of his veins. What will be the most probable result of this transfusion? A) It will have no unfavorable effect as long as the water is free of viruses and bacteria. B) The patient's red blood cells will shrivel up because the blood has become hypotonic compared to the cells. C) The patient's red blood cells will swell and possibly burst because the blood has become hypotonic compared to the cells. D) The patient's red blood cells will shrivel up because the blood has become hypertonic compared to the cells. E) The patient's red blood cells will burst because the blood has become hypertonic compared to the cells.
How does carbon dioxide enter a leaf?
A) CO2 diffuses through the epidermis into the mesophyll. B) CO2 passes through openings called stomata on the leaf surface. C) Dissolved CO2 is transported from roots to leaves in the xylem. D) Atmospheric pressure forces CO2 through pits on the leaf surface. E) CO2 is moved by active transport into the leaf by special cells called guard cells.
From which of the following fish are the amphibians thought to have evolved?
a) Class Myxini b) Class Actinopterygii c) Class Sarcopterygii d) Class Chondrichthyes e) Class Cephalaspidomorphi