Cells like muscle cells which require lots of energy would probably have many __________.
a) nuclei
b) flagella
c) mitochondria
d) lysosomes
Ans: c) mitochondria
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Answer the following statements true (T) or false (F)
1. Pneumocystis pneumonia is a common contributory cause of death in AIDS patients. 2. Tinea versicolor is caused by a yeast named Malassezia furfur. 3. Mycetomas are respiratory infections. 4. When grown at room temperature, Coccidioides immitis produces yeast colonies. 5. Histoplasmosis is the most common systemic fungal infection in AIDS patients.
After 48 hours of incubation, black colonies with a dark brown halo are observed on Tinsdale agar. What type of toxin does this organism produce?
a. Emetic toxin b. Exotoxin c. Enterotoxin d. Endotoxin
Which cells in a root form a protective barrier to the vascular system where all materials must move through the symplast?
A) pericycle B) cortex C) epidermis D) endodermis E) exodermis
Five hundred forty-one people per thousand die of this disease. This is a statement about
A. an extrinsic limiting factor. B. environmental resistance. C. mortality. D. All of these answers are correct.