What do pollen, dust mites, certain foods and drugs, insect venom, fungal spores, and some ingredients in cosmetics have in common?

GBIO 227 EXAM 7 (A++++ ANSWER)


1) What do pollen, dust mites, certain foods and drugs, insect venom, fungal spores, and some ingredients in cosmetics have in common?


they often contain dangerous bacteria

they often act as allergens

they all contain lipids

they are all made of protein

2) Which antibodies are secreted when an allergic person is exposed to an allergen?






3) A serious and sometimes fatal allergic reaction is


septic shock.

anaphylactic shock.

compensated shock.

toxic shock.

4) When the body’s defenses turn against its own cells, the disorder is called


an autoimmune response.

acquired immune deficiency syndrome.

anaphylactic shock.

passive immunity.

5) The human immunodeficiency virus (HIV) primarily destroys which cells?




helper T and macrophages


6) The method of contracting an illness after touching a contaminated doorknob, diaper or handkerchief is


inhalation contact.

direct contact.

indirect contact.

contact with a vector.

7) Becoming infected by a pathogen following the bite of a mosquito is considered


indirect contact.

inhalation contact.

direct contact.

contact with a vector.

8) The likelihood that a pathogen will make its host seriously ill is






9) The enzyme used by HIV that allows it to make DNA from RNA is


DNA ligase.

restriction endonuclease.


reverse transcriptase.

10) Endocarditis


refers to ‘inside the heart’.

refers to an irregular heart rhythm.

is only found in elderly patients.

is more problematic for women.

11) Infants born with a hole in some part of the hear wall are often referred to as


red babies.

blue babies.

purple babies.

green babies.

12) Pneumonia may be caused by all of the following EXCEPT






13) The most aggressive form of lung cancer is


squamous cell carcinoma.

large-cell carcinoma.

small-cell carcinoma.


14) SARS is a form of





lung cancer.

15) A dangerous form of diarrhea complicated by anemia may be caused by


Mycobacterium tuberculosis.

Clostridium botulinum.

Staphylococcus aureus.

Escherichia coli.

16) Infections, stress or factors that speed up peristalsis may cause





Crohn’s disease.

17) One of the most common of all childhood cancers is


bronchogenic carcinoma.

Wilms tumor.


osteogenic sarcoma.

18) Nephritis may lead to cessation of blood filtering by the glomerulus because the kidney is


surrounded by a tough renal capsule.

located behind the intestines.

a paired structure.

directly connected to the inferior vena cava

19) Bladder infections that travel up to the kidney are called






20) One of the most common sexually transmitted diseases is






21) Why is Chlamydia trachomatis considered a “stealth” STD?


infections with it tend to sneak up on people.

a large percentage of people who have it have no symptoms and may pass it on easily.

when people have it, it is difficult to detect with modern techniques.

it may be transmitted in many different ways making it difficult to figure out how a person got it.

22) Other than being STDs, what do chlamydia and gonorrhea have in common?


their symptoms are identical.

they are caused by the same bacteria.

they both may cause PID.

they are both treated with the same antibiotics.

23) The area(s) of the body most susceptible to herpes simplex virus is (are)


mucous membranes of the mouth.

mucous membranes of the genitals.

broken skin.

all of these.

24) Genital warts are caused by



Herpes virus.



25) HPV has been linked to



cervical cancer.


genital herpes.

26) Which of the following diseases, not usually classified as an STD, may be spread by sexual contact?


hepatitis A

hepatitis B

lung cancer

breast cancer

27) Which is a normal fungal inhabitant of the vagina that can overgrow under certain circumstances causing a “cottage cheesy” discharge, itching, and irritation?


Trichomonas vaginalis


Escherichia coli

Candida albicans

28) The treatment for trichomoniasis is




gentian violet.


29) The treatment for a case of hepatitis B is


anti-fungal drugs



a high protein diet

30) In relation to genital herpes, antiviral drugs


cure the disease.

reduce the symptoms during recurrences.

all are true except “cure the disease”.

reduce the frequency of recurrences.

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