A gentleman noticed a rash, forming a target-like design, on his arm. Subsequently, he developed pain and later arthritis. The bacterium that caused his condition was most likely spread by ________
A) a mosquito B) uncooked food C) unprotected sex D) a tick
Answer: D
You might also like to view...
Which type of joint creates a space filled with fluid?
a. synovial joint b. fibrous joint c. cartilaginous joint d. vertebral disks
Dictyostelium discoideum is an unusual organism, one that straddles the boundary between the unicellular and the multicellular. Its feeding phase consists of individual amoeba-like cells that move independently, feeding on bacteria by phagocytosis. When the food runs out, cells begin to aggregate into a multicelled structure that migrates toward light. The cells differentiate into a base, stalk, and spores; only the spores survive to colonize a new habitat. Dictyostelium discoideum is which of the following?
a. A protozoa b. An apicomplexan c. An algae d. A diatom e. A slime mold
There is generally only one valid explanation for an observation
Indicate whether the statement is true or false
Taiga is characterized by:
A) coniferous forest, low tree diversity, and no permafrost. B) permafrost, short growing seasons, and sparse coniferous trees. C) poor drainage over permafrost, few to no trees, and short growing season; shrubs and sedges dominate. D) few ecological dominants, short growing seasons, and sparse deciduous trees. E) pines as an early successional stage before deciduous trees, rich understory, and cold climate.