A peptidoglycan-hydrolyzing protein isolated from bacteriophage P68 has been used in synergy with the antimicrobial agent gentamicin, enhancing the antimicrobial effects of the drug toward Staphylococcus aureus. This is an example of microbial control by ________.
A. antisepsis
B. predation
C. enzybiotics
D. sterilization
E. heavy metals
Answer: C
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In sponges, cells differentiate into sperm or eggs in the _____. Only _____ are released into the water
A. mesohyl; sperm B. mesohyl; choanocytes C. mesohyl; spicules D. cavity; sperm E. cavity; choanocytes
The responsiveness of cells to calcitonin increase as an individual ages; maximum responsiveness occurs in elderly individuals as a mechanism to improve the stability and strength of bones.
a. true b. false
In this figure, the F1 generation shows mating of resistant bollworms (___) with susceptible heterozygous (____) bollworms. Select one:
a. RR; rr b. Rr; rr c. rr; RR d. Rr; RR e. rr; Rr