What three outcomes result from a human T lymphotropic virus infection?
What will be an ideal response?
1. Virus-infected T cells grow abnormally and result in adult T cell leukemia or lymphoma.
2. Infected T cells may produce abundant interferon, creating inflammatory responses to the central nervous system, termed HTLV-1-associated myelopathy (HAM).
3. HTLV infection can result in unchecked or opportunistic infections due to the decrease in functioning leukocytes.
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Orchids, which grow well in regions that are hot and dry during the day and cool at night, are classified as CAM
plants.
a. True b. False
Sea urchins and sand dollars fall into which of the following Echinoderm classes?
a. Ophiuroidea b. Crinoidea c. Echinoidea d. Holothuroidea
Which of the following is NOT possible for
incomplete flowers?
a. self-pollination b. attract pollinators c. form seeds d. form fruits e. all of these are possible for incomplete flowers
External signals, such as hormones and growth factors, can stimulate a cell to go through the cell cycle.
Answer the following statement true (T) or false (F)