The least mobile protists are the ____
a. apicomplexans
b. dinoflagellates
c. diatoms
d. heterokonts
e. euglenoids
ANSWER: a
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A scientist fused a mouse cell and a human cell, then treated the cell with specific antibodies
covalently linked to fluorescent dyes (antibodies to mouse proteins--green; antibodies to human proteins--red). What does the cell look like immediately after fusion?
a. The cell is half red and half green. b. The red and green fluorescent labels are uniformly distributed across the entire membrane. c. The red and green labels are distributed in intermingled patches. d. The red and green labels flash intermittently. e. The red and green labels are distributed in a swirling pattern
All living organisms are not connected through the flow of energy and the cycling of materials
1.True 2.False
Trace the flow of blood entirely through both the pulmonary and systemic circulations. Start and end with the right
atrium. Be sure to list all structures through which the blood will pass, including all valves and major blood vessels entering and exiting the heart. What will be an ideal response?
Rickettsiosis is caused by Rickettsia rickettsii, a pathogen that
A) produces powerful exotoxins. B) provokes a severe immune response. C) interferes with the host cell's Krebs cycle. D) infects the lining of blood vessels and leads to leaking of plasma into tissue. E) lyses the host's cells.