The clearing made by bacteriophages in a "lawn" of bacteria on an agar plate is called a ________
A) host range
B) plaque
C) lysogenic zone
D) prophage
E) clear zone
Answer: B
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Which type of medium would be the best choice when shipping a sample of bacteria from a clinic to a laboratory for testing?
A. Blood agar B. Eosin-methylene blue agar C. Thioglycolate medium D. Transport medium
No prokaryotic cells have
a. ribosomes. b. a nucleus. c. cytoplasm. d. a plasma membrane. e. cell walls
Anemia refers to
a. too many or abnormal red blood cells. b. too few or abnormal white blood cells. c. too few or abnormal red blood cells. d. too many or abnormal white blood cells. e. a form of leukemia.
In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls flower color
The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) is dominant to the allele for white (p). A tall plant with white flowers crossed with a dwarf plant with purple flowers produces all tall offspring with purple flowers. What is the genotype of the parents? What will be an ideal response?