Agar and carrageenan are extracted from ____ for use as thickeners or stabilizers in foods, cosmetics, and personal care products
a. brown algae
b. red algae
c. green algae
d. brown algae and green algae
e. red algae and green algae
b
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Prereduced, anaerobically sterilized (PRAS) media:
a. are produced, packaged, shipped, and stored under anaerobic conditions. b. have a short shelf life of only 2 weeks. c. enable the culture to be incubated in the regular incubator under aerobic conditions. d. contain peroxides that enhance the growth of certain anaerobes.
The two strands of a DNA double helix are held to each other by ____ bonds between nitrogenous bases
a. phosphodiester b. disulfide c. glycosidic d. hydrogen e. peptide
If all the meiofaunal organisms were eliminated from a sandy beach, how would that affect the habitat and the trophic structure of the beach?
What will be an ideal response?
Engulfing-phagocytic cells of innate immunity of vertebrates include _____. I) neutrophils II) macrophages III) dendritic cells IV) natural killer cells
A) I and III B) II and IV C) I and IV D) I, II, and III