An organism that is neither prokaryotic nor photosynthetic, and must obtain its nutrients by secreting digestive
enzymes into the environment, belongs to which group of organisms?
a. Bacteria
b. protists
c. Fungi
d. Plantae
e. Animalia
c
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Winogradsky columns are used primarily for enrichment of
A) aerobic cultures, although occasionally anaerobes do appear. B) anaerobic cultures, although occasionally aerobes do appear. C) aerobes, anaerobes, and phototrophs. D) phototrophs, although occasionally heterotrophs do appear.
The ________ of the microscope holds and allows selection of the objective lenses.
A. condenser B. ocular C. stage D. nosepiece
Which of the following was not one of Mendel's main inferences from his research?
A) The genetic material elements come in pairs. B) Genes are lengths of DNA. C) The basic units of genetics are material elements. D) The genetic material elements separate during the formation of gametes. E) The genetic material elements can retain their character through many generations.
Many of the signs and symptoms of inflammation, including redness and itching, are due to the release of (histamines/leukotrienes/proteases) by degranulation of mast cells.
Fill in the blank(s) with the appropriate word(s).