Quaternary ammonium compounds are disinfectants effective against
A) endospores.
B) mycobacteria.
C) nonenveloped viruses.
D) Pseudomonas aeruginosa.
E) enveloped viruses.
E
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Match the following items with the correct phrases.
_______1. A ____________________ is a membrane-bound vesicle containing only an ingested object. _______2. The directed migration of leukocytes is known as ____________________. _______3. A ____________________ is a membrane-bound vesicle containing an ingested object and digestive enzymes. _______4. ____________________ is an increase in the diameter of blood vessels. _______5. ____________________ is a process by which phagocytosis is facilitated by the deposition of antibodies or complement fragments onto the surface of particles or cells. A. chemotaxis B. opsonization C. phagolysosome D. phagosome E. vasodilation
CAM plants differ from C4 plants in that CAM plants ________ while C4 plants ________
a. none of the choices b. fix carbon in two separate chambers to keep CO2 high near rubisco / fix carbon mostly at night c. produce 3-carbon PGA as the first stable intermediate / produce 4-carbon oxaloacetate as the first stable intermediate d. open stomata and fix carbon using a C4 pathway at night / fix carbon first in mesophyll cells and again in bundle sheath cells
Which of the following is NOT an adaptation used by marine mammals to extend dive times?
a. size-relative increase in blood volume. b. increase in erythrocyte count c. size-relative increase in lung volume d. elevated concentration of muscle myoglobin e. reduced circulation to nonessential organs
Which of the following does not characterize arthropods?
A. presence of a coelom B. segmentation C. an open circulatory system D. an exoskeleton E. an incomplete digestive tract