A ________ is a device used for growing mass cultures.
Fill in the blank(s) with the appropriate word(s).
fermentor
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IP3 receptors are associated with
A) plasma membranes. B) intracellular membranes. C) mitochondrial membranes. D) ER membranes. E) lysosomes.
Dictyostelium discoideum is an unusual organism, one that straddles the boundary between the unicellular and the multicellular. Its feeding phase consists of individual amoeba-like cells that move independently, feeding on bacteria by phagocytosis. When the food runs out, cells begin to aggregate into a multicelled structure that migrates toward light. The cells differentiate into a base, stalk, and spores; only the spores survive to colonize a new habitat. Dictyostelium discoideum is which of the following?
a. A protozoa b. An apicomplexan c. An algae d. A diatom e. A slime mold
Which of the following are NOT one of Stuart Levy's guidelines for limiting the development of antibiotic resistance?
A) To avoid contracting food-borne bacteria, consumers should wash fruits and vegetables and avoid raw eggs and undercooked meat. B) Consumers should always use antibacterial soaps and cleaners, even when no perceived bacterial threat is present. C) Patients should not request antibiotics for viral infections, such as colds or flu. D) When they take antibiotics, patients should complete the course of treatment. E) To avoid spreading infections from patient to patient, physicians should wash their hands thoroughly between patients.
Lenticels function to:
a. protect undeveloped embryonic shoots. b. permit gas exchange through the periderm. c. support leaves and flowers. d. absorb water and dissolved nutrient minerals. e. anchor a plant in the ground.