A 45-year-old man living in the western United States begins experiencing headache, fever, and body aches, which he attributes to the flu. His symptoms, however, become worse, and he later develops kidney disease and acute respiratory failure. He is most likely infected with which vi-rus?
a. Rabies virus
b. Adenovirus
c. Norovirus
d. Hantavirus
D
He is most likely infected with hantavirus pulmonary syndrome (HPS). The disease begins with generalized symptoms that include headache, fever, and body aches typically after an incubation period of 11 to 32 days. Subsequently, the symptoms become significantly more severe, leading to hemorrhagic fever, kidney disease, and acute respiratory failure.
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Which of the following characters are considered analogous?
Match each of the following cellular processes to the stage of mitosis in which it occurs. (Select all correct processes for each mitotic stage. Each cellular process is used only once.)
Stage Cellular processes prophase a. Microtubules search for and attach to kinetochores at the centromere of each chromosome. prometaphase b. Microtubules from both sides of the mitotic spindle tether each chromosome and move them to the center of the cell. metaphase c. Chromosomes condense to thickened structures that are visible under the microscope. anaphase d. The centromere divides and the sister chromatids separate. telophase e. The nuclear envelope reforms around the segregated chromosomes. f. Two new chromosomes form from each original chromosome. g. The nuclear envelope disappears. h. Microtubules pull chromosomes toward opposite poles. i. The mitotic spindle assembles from tubulin dimers as the centrosomes migrate to opposite poles. j. Chromosomes arrive at opposite poles of the cell. k. Chromosomes decondense. l. The mitotic spindle disappears. What will be an ideal response?
Answer the following statements true (T) or false (F)
1. Restriction enzyme digestion of DNA is NOT required to perform a Southern blotting experiment. 2. The main goal of polymerase chain reaction (PCR) is to generate many copies of DNA. 3. DNA microarrays (gene chips) are only capable of monitoring the expression of one gene at a time. 4. 2-D gel electrophoresis separates proteins of interest based solely on molecular weight.
Bacteria present in the digestive tracts of some herbivores function to:
a. provide bulk to their feces. b. produce minerals for their hosts. c. detoxify harmful materials found in the food. d. digest the animal waste products from the herbivore diet. e. digest the cellulose cell wall of plant cells.