Which is NOT true about AIDS?
A. The HIV virus preferentially enters and disables B cells.
B. It is caused by a virus that contains RNA.
C. It is caused by a retrovirus.
D. It is transmitted by intimate contact with infected blood, sexual intercourse with an infected partner, or by an infected mother to her breast-fed infant.
E. Certain unusual cancers such as Kaposi's sarcoma co-occur with relatively high frequency.
Answer: A
You might also like to view...
How can you explain the substantial lag between a signal and response in the phylum Porifera?
A) Lag occurs because sponges are asymmetrical. B) Lag occurs because sponges show no cephalization. C) Lag occurs because action potentials in cells of sponges are slow compared to action potentials in neurons. D) Lag occurs because the signal has to be very strong in order to see any response.
Electrical changes that occur in the membranes of the T tubules cause release of ________ ions from the sarcoplasmic reticulum.
Fill in the blank(s) with the appropriate word(s).
Where does the chemical reaction between thyroglobulin and iodine take place?
A) in lysosomes B) in rough endoplasmic reticulum C) in the lumen of the thyroid follicle D) in pinocytotic vesicles E) in apical microvilli
Reticular cells originating from an embryonic epithelium are found in the:
a. Bronchiolar associated lymphoid tissue (BALT) of the respiratory system b. Lymph nodes c. Spleen d. Thymus e. Tonsils