Spindle-shaped viruses have been shown to infect only
A) Eukarya.
B) Bacteria.
C) Archaea.
D) plants.
Answer: C
Biology & Microbiology
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Colchicine is a drug that is used in plant breeding to create polyploids. It blocks the assembly of microtubules. If dividing cells are treated with Colchicine, at what stage of mitosis would you predict the arrest would occur?
A. prophase B. metaphase C. late Anaphase D. telophase E. G1 of interphase
Biology & Microbiology
Viruses are ______ -coated fragments of DNA or RNA.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Amphibians have
a. a two-chambered heart. b. a three-chambered heart. c. a four-chambered heart. d. none of the above.
Biology & Microbiology
Cardiac output is defined as the volume of blood pumped by a(n) ________ each time it contracts
A) heart B) atrium C) atrioventricular valve D) ventricle
Biology & Microbiology