Infection with HIV is listed as the cause of death for an AIDS patient.
Answer the following statement true (T) or false (F)
False
Persons with AIDS die from one or more AIDS-related (opportunistic) illnesses rather than from the HIV infection directly.
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Fraternal twins arise from two different fertilized eggs and are called ____ twins
Fill in the blank with the appropriate word.
In some plants, companion cells become modified into phloem cells that facilitate the short-distance transport of
various organic solutes from the symplast into the apoplast.
a. True b. False
Tamiflu is a common medication given for influenza treatment. It works by protecting and blocking sialic acid molecules on the surfaces of host cells and influenza virus envelopes as they leave the cell. Which statement reflects the mechanism of Tamiflu's action?
A. Tamiflu interferes with the metabolic properties of the virus. B. Tamiflu interferes with the release of the budding viruses from the infected host cells. C. Tamiflu interferes with the replication of +ssRNA from the -ssRNA genome of the flu virus. D. Tamiflu blocks protein synthesis of the viral genome.
Some flowers bloom in the spring while others bloom in the summer. this is an example of _____ reproductive isolation.
A. postzygotic B. allopatric C. sympatric D. outgroup E. prezygotic