Antibiotics that target cell wall synthesis ultimately cause bacterial cell death as a result of
A) osmotic lysis.
B) inhibition of molecular transport.
C) decreased synthesis of peptidoglycan.
D) plasmolysis.
E) cell shrinkage.
Ans: A) osmotic lysis.
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When many species share a similar characteristic because the species have originated from a common ancestor, the characteristic can be described as which of the following?
a. an analogous characteristic b. a vestigial characteristic c. a homologous characteristic d. a convergent characteristic
The urine of marine mammals is ____ when compared to ____
a. hypoosmotic; seawater b. hypoosmotic; their body fluids c. hyperosmotic; seawater d. isoosmotic; their body fluids e. isoosmotic; seawater
The scientist(s) who used X-ray diffraction to help reveal the geometric structure of DNA was/were
A. Wilkins and Franklin. B. Hershey and Chase. C. Avery and Macleod. D. Chargaff. E. Watson and Crick.
Damage to its flagellum would prevent a choanocyte from
A. circulating water through the sponge. B. secreting spongin to form the sponge body. C. producing the supportive spicules. D. stinging and capturing prey.