Phytophthora infestans is a pathogen that attacks a variety of plants. This pathogen is an example of what type of protist?
A. algae
B. fungus-like protists
C. protozoans
D. periphyton
E. plankton
B. fungus-like protists
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Answer the following statements true (T) or false (F)
1. Soil can contain the spores that cause botulism, gas gangrene, and tetanus. 2. Chlamydial genital infections and gonorrhea are the two most common nationally notifiable infectious diseases in the United States. 3. The levels of chlorine routinely used for water treatment are sufficient to kill Giardia cysts and Cryptosporidium oocysts. 4. Yersinia pestis, the bacterium that causes plague, is one of the pathogens most often discussed as a potential biologic weapon. 5. Gonorrhea is considered to be a communicable disease, but not a contagious disease.
The definitive identification of which of the following organisms is accomplished by hemad-sorption techniques?
a. Chlamydia trachomatis b. Mycoplasma hominis c. Mycoplasma pneumoniae d. Mycoplasma genitalium
Identify the correct steps for cloning a gene of interest, then arrange them in the correct order
1. Transform the bacteria. 2. Incubate the DNA fragments and cut cloning vector with DNA ligase. 3. Use restriction enzymes to cut the gene of interest and the cloning vector. 4. Spread bacteria on medium containing lactose and ampicillin. 5. Spread bacteria on medium containing X-gal and ampicillin.
a. 4, 3, 1, 5 b. 3, 2, 5, 1 c. 3, 2, 1, 5 d. 2, 3, 1, 5 e. 3, 2, 1, 4
The structure found in the nose of mammals that can detect pheromones is called the __________
a. pheronasal detector b. nasopharynx c. vomeronasal organ d. olfactory mucosa e. olfactory receptor ganglia