Which of the following describes an advantage to prokaryotes capable of endospore formation?
A) Triggers DNA replication to allow release of a mature endospore once the vegetative cell is degraded.
B) Provides resistance to harsh conditions such as ultraviolet radiation and chemical disinfectants.
C) Promotes survival in conditions that are devoid of nutrients.
D) all of the choices are advantages
Ans: D) all of the choices are advantages
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Match the following items with the correct phrases.
_______1. ____________________ are the “building blocks” of proteins. _______2. ____________________ consist of a nitrogenous base, a pentose, and a phosphate group. _______3. ____________________ are the “building blocks” of polysaccharides. _______4. Sucrose, lactose, and maltose are examples of ____________________. _______5. Fructose, galactose, and glucose are examples of ____________________. a. amino acids b. disaccharides c. fatty acids d. monosaccharides e. nucleotides
The statement, "The total amount of energy in the universe is constant," is a tenet of
A) the first law of thermodynamics. B) the second law of thermodynamics. C) thermodynamic spontaneity. D) entropy. E) enthalpy.
Which of the following statements is correct?
a. Intracellular digestion is seen in mammals. b. Intracellular digestion never involves choanocytes. c. Extracellular digestion must involve choanocytes. d. Extracellular digestion may take place in a tube contained inside the body. e. Most animals experience both intracellular and extracellular digestion.
You have given a dosage of an antibiotic to a patient for his infection, but the patient is not getting any better. The MIC tests shows that the drug that you prescribed, at the dosage that was given, should work against this particular strain of bacterium. What do you think might be the problem?
A. The drug might be broken down in the patient's body before it can have its full effect on the bacterium. B. The bacterium is immune to the chemical effects of the drug. C. The drug was improperly made at the pharmaceutical company, so is no longer effective. D. The patient is resistant to the drug.