Which of the following does NOT describe an anaphylactic response?
A. Associated with high concentration of chemical mediators.
B. All statements describe the anaphylactic response.
C. Allergens do not act directly on the target organ.
D. Allergen route of entry is always due to inhalation.
E. Sudden respiratory and circulatory disruption that can be rapidly fatal.
Ans: D. Allergen route of entry is always due to inhalation.
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Which hormone is correctly paired with its action?
A) oxytocin â€" stimulates uterine contractions during childbirth B) thyroxine â€" affects biological rhythms, seasonal reproduction C) insulin â€" stimulates glycogen breakdown in the liver D) adrenocorticotropic hormone (ACTH) â€" stimulates metabolic processes E) melatonin â€" stimulates the release of glucocorticoids by the adrenal cortex
Which of the following statements cannot be used to describe a viral infection?
A) the virus divides within the host cell forming two new viruses that also divide within the host cell; those two viruses divide to form four viruses within the host cell B) the virus may insert its genetic material into the DNA of the host C) the virus may direct production and assembly of new viruses within the host cell and cause it to lyse D) the virus may disrupt the DNA of the host cell leading to growth of a tumor E) The virus inserts its genetic material into the host cell DNA< but may be simulated to separate from the host's DNA and begin production of new viruses that lyse the cell
The primary ecological function of fungi is that of ________.
A. decomposer B. consumer C. pathogen D. producer
Fermentation is the conversion of sugar into...
a. alcohol b.acid c.gas d.all of the above e. none of the above