51 Which receptors have to be on the surface of a potential host cell for it to

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51 Which receptors have to be on the surface of a potential host cell for it to be infected by HIV?

Select one:

a. Fusion receptors

b. TATA receptors

c. Androgen receptors

d. CD4 receptors

Question 52

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52 What is a possible consequence of not treating a gonorrhea infection?

Select one:

a. Painful rashes on the skin at the site of the infection

b. Cervical cancer

c. Pelvic inflammatory disease

d. Warts on the skin at the site of the infection

Question 53

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53 HPV causes which of the following diseases?

Select one:

a. Breast cancer

b. Cervical cancer

c. Herpes

d. Endometriosis

Question 54

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54 Which of the following is most likely to infect nerve cells?

Select one:

a. HPV (human papilloma virus)

b. HSV (herpes simplex virus)

c. Chlamydia

d. Gonorrhea

Question 55

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55 What important difference appears to explain why some species form pair bonds and others don't?

Select one:

a. Species differences in the circulating concentrations of oxytocin and vasopressin

b. Species differences in the number and/or distribution of oxytocin and vasopressin receptors in the brain

c. Species differences in the size of the nucleus accumbens

Explanation / Answer

1. D) CD 4

The HIV (Env) protein envelope initially would bind to the cellular CD4 receptor and then co receptor.

2. c. Pelvic inflammatory disease

In women pelvic inflammatory disease may be caused whereas in men it may lead to infertility.

3. b. Cervical cancer

The Cervical cancer is the most common type of cancer caused by the human papilloma virus.

4. b. HSV (herpes simplex virus)

This is caused by the type 1 herpes simplex virus, which can cause a damage of the nervous system.

5. b. Species differences in the number and/or distribution of oxytocin and vasopressin receptors in the brain

These differences are due to the receptors located in the ventral forebrain

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