Briefly describe the trends in HIV infection and AIDS
What will be an ideal response?
As of 2010, estimates indicate that about 34 million people worldwide are infected with HIV, and more than 30 million have died from AIDS since the epidemic began in 1981. Close to 2.7 million new worldwide infections were reported in 2010. And women are becoming increasingly affected, with 16.8 million women now living with HIV. About 1.2 million people in the United States are infected with HIV. About 20% of them are unaware of the infection. One in every 260 Americans is infected, and about 24% of the newly reported cases are women. Through the end of 2010, an estimated cumulative number of 1 million AIDS cases had been diagnosed in the United States, and an estimated 600,000 people had died from the diseases caused by HIV. About 80% of the people who died are in the 25- to 49-year-old age group.
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Which of the following statements about human immunodeficiency virus (HIV) are correct? (Select all that apply.)
a. HIV has a DNA genome. b. HIV must synthesize reverse transcriptase immediately after infecting a cell. c. HIV infects cells expressing CD4. d. HIV requires the CXCR4 co-receptor for internalization by T cells. e. NF?B is a transcription factor that facilitates the transcription of proviral RNA.
Which cellular structure produces energy for cellular activities?
A) mitochondria B) cytoplasm C) Golgi apparatus D) lysosomes
Benign tumors are usually encapsulated
Indicate whether the statement is true or false
Women over 40 should have mammography once every two years. If mamm/o is breast, what do they need?
A) a physical examination of the breast B) a recording or x-ray of the breast C) a visual examination of the breast D) a biopsy of breast tissue