Which organism is highly fatal in immunocompromised patients and is transmitted by the inhalation of dried bird droppings?
a) Trypanosoma brucei
b) Naegleria fowleri
c) Listeria monocytogenes
d) Cryptococcus neoformans
Ans: d) Cryptococcus neoformans
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Which of the following is the correct organizational hierarchy, from largest to smallest, in the hierarchical order of life? (Some levels have been omitted, so you are looking for the correct order.)
A. Biosphere ? Community ? Population ? Tissue ? Organ ? Cell ? Atom ? Molecule B. Ecosystem ? Population ? Community ? Organ system ? Organ ? Cell ? Molecule ? Atom C. Community ? Ecosystem ? Population ? Tissue ? Organ ? Cell ? Organelle ? Atom D. Ecosystem ? Community ? Population ? Organ ? Tissue ? Cell ? Molecule ? Atom
Trichoplax adhaerens resembles?
a. snail b. sea anemone c. sea star d. sponge e. a hairy sticky plate
Within the cells of plants that form the xylem and phloem a unique process occurs. The water molecules bond to each other. What is this process called?
A) adhesion B) cohesion C) nonpolar D) covalent bonding
Scientists will never know for sure why dinosaurs became extinct. Therefore, scientists should
A) accept the current theory about dinosaur extinction as the best possible theory. B) continue to learn as much as they can about dinosaur extinction. C) stop studying dinosaurs and study only living animals. D) work to raise live dinosaurs to study.