A microbiology student sampled part of a sandwich and observed fuzzy colonies growing on his nutrient agar after incubating the plate for 48 hours. Based on this information, what can he determine concerning the colonies growing on his plate?
A) They are bacterial colonies
B) They are fungal colonies
C) Without staining, there is not enough information to make any determinations
B) They are fungal colonies
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Type I survivorship curves
a. are characteristics of humans and elephants. b. typify a population in which all ages have an equal chance of survival. c. indicate a high mortality rate in the very young. d. show that very few young are produced, that each is given parental support, and that most individuals live a relatively long life and die of old age. e. are typical of annual plants
Early pre-cells developed an important prerequisite for life, which was self-replicating __________.
A. RNA B. carbohydrates C. lipids D. amino acids
Which of the following would be a function of the sympathetic division?
A) accelerate heart rate B) stimulate the stomach C) stimulate the gallbladder D) constrict the pupils
The Golgi apparatus is comprised of flattened, saclike structures called ________, which may be clustered in one region or scattered throughout the cell.
A. cisternae B. thylakoids C. vesiculae D. cristae