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The immune system usually increases lymphocytes when fighting viral infections. Why then are lymphocytes low in HIV patients? The correct answers would be that HIV predominantly destroys____________which are crucial in activating both branches of adaptive immunity.

Steroid hormones act as transcription factors and can regulate gene expression. Transcription factors which bind to ___________region of DNA and turn the gene ON are known as ___________.  

When breathing into a paper bag several changes occur in the body. Select all correct responses.

In epileptics the seizure occurs when abnormal electrical activity overwhelms the brain’s normal function. Immediately before seizure, the sufferer frequently perceives a brief sensation, called an aura, which suggests the origin of the electrical burst. Using your knowledge of cerebral lobe function, predict the specific LOBE and CORTEX or AREA of origin of a seizure that was preceded by the perception of (3 pts.):   a. a new smell?   b. a flash of light?   c. touching an orange?   d. a familiar song?   e. a bitter taste of coffee?   f. of pain?

Megakaryocytes give rise to what types of formed elements?

Select the proper order of events involved in the production and drainage of lacrimal fluid (tears).

When you are looking at an object which is nearby why do your pupils constrict (decrease in diameter)?

Emina was tested for visual acuity using a Snellen eye chart. Her distance visual acuity was 20/15. This means that she____________.

During strenuous and long exercise, there are several changes taking place in the body. Select all that apply.

There are five basic taste sensations. Match each taste to a specific stimulus which elicits that taste.