MCB2010 Lecture Final Exam Questions with Complete Solutions 100% Solved| Grade A+
What is the composition and transmission of hepatitis viruses? A: Hep A: RNA, fecal-oral
Hep B: DNA, blood/body fluids
Hep C: RNA, blood
Hep D: RNA, needs Hep B to infect
Hep E: RNA, fecal-oral
What causes Giardiasis? A: Giardia lamblia, a protozoan parasite.
Which GI pathogens are gram-positive, endospore-forming rods? A: Clostridium difficile,
Clostridium perfringens, and Bacillus cereus.
Which disease involves the release of proglottids in feces? A: Tapeworm infection
(Taeniasis).
What are the characteristics of salmonellosis? A: Diarrhea, fever, abdominal cramps; from
contaminated food.
What causes peptic ulcers? A: Helicobacter pylori.
What infection is linked to pseudomembranous colitis? A: Clostridium difficile.
What are the characteristics of Mumps? A: Swollen salivary glands, fever, headache; virus
spreads via saliva.
What are the characteristics of Pinworm infection? A: Itchy anus, especially at night; caused
by Enterobius vermicularis.
,What are the characteristics of Hookworm infection? A: Anemia and fatigue; enters through
skin from soil.
What are the characteristics of Ascaris infection? A: Large roundworms in intestines; may
cause blockage.
What is cysticercosis? A: Infection with larval cysts of Taenia solium in tissues, can affect the
brain.
What is the morphology of Campylobacter? A: Gram-negative, curved rod.
What is the morphology of Cryptosporidium? A: Protozoan with round oocysts.
What is the morphology of Escherichia coli? A: Gram-negative rod.
What is the morphology of Salmonella? A: Gram-negative rod.
What is the morphology of Trichinella? A: Roundworm (helminth).
What disease is linked to oocysts? A: Cryptosporidiosis.
What is the most common cause of tapeworm infections in humans? A: Taenia saginata
(beef tapeworm) from undercooked meat.
What is the life cycle of Schistosoma species? A: Larvae in water enter skin → migrate to
blood vessels → mature and lay eggs → eggs exit via urine or feces.
, How does trichinellosis progress? A: Eat undercooked pork → larvae invade intestines →
move to muscles → cause pain and swelling.
What are the signs of dental plaque? A: Sticky film of bacteria on teeth.
What is dental tartar? A: Hardened plaque that sticks to teeth.
What are signs of gingivitis? A: Red, swollen, bleeding gums.
What is thrush? A: White patches in the mouth caused by Candida albicans.
What is periodontal disease? A: Infection of gums and bone supporting teeth, may lead to
tooth loss.
What are the symptoms of UTIs? A: Frequent, painful urination, cloudy or smelly urine.
What are the symptoms of cystitis? A: Bladder inflammation, urgency to urinate, burning
sensation.
What are the symptoms of pyelonephritis? A: Kidney infection with fever, back pain, nausea.
What infections are tested in a TORCH panel? A: Toxoplasmosis, Other (like syphilis),
Rubella, Cytomegalovirus, Herpes simplex.
How is bacterial vaginosis diagnosed? A: Vaginal discharge with a fishy odor, clue cells seen
under microscope, and pH > 4.5.
What disease does Trichomonas vaginalis cause? A: Trichomoniasis.
What is the composition and transmission of hepatitis viruses? A: Hep A: RNA, fecal-oral
Hep B: DNA, blood/body fluids
Hep C: RNA, blood
Hep D: RNA, needs Hep B to infect
Hep E: RNA, fecal-oral
What causes Giardiasis? A: Giardia lamblia, a protozoan parasite.
Which GI pathogens are gram-positive, endospore-forming rods? A: Clostridium difficile,
Clostridium perfringens, and Bacillus cereus.
Which disease involves the release of proglottids in feces? A: Tapeworm infection
(Taeniasis).
What are the characteristics of salmonellosis? A: Diarrhea, fever, abdominal cramps; from
contaminated food.
What causes peptic ulcers? A: Helicobacter pylori.
What infection is linked to pseudomembranous colitis? A: Clostridium difficile.
What are the characteristics of Mumps? A: Swollen salivary glands, fever, headache; virus
spreads via saliva.
What are the characteristics of Pinworm infection? A: Itchy anus, especially at night; caused
by Enterobius vermicularis.
,What are the characteristics of Hookworm infection? A: Anemia and fatigue; enters through
skin from soil.
What are the characteristics of Ascaris infection? A: Large roundworms in intestines; may
cause blockage.
What is cysticercosis? A: Infection with larval cysts of Taenia solium in tissues, can affect the
brain.
What is the morphology of Campylobacter? A: Gram-negative, curved rod.
What is the morphology of Cryptosporidium? A: Protozoan with round oocysts.
What is the morphology of Escherichia coli? A: Gram-negative rod.
What is the morphology of Salmonella? A: Gram-negative rod.
What is the morphology of Trichinella? A: Roundworm (helminth).
What disease is linked to oocysts? A: Cryptosporidiosis.
What is the most common cause of tapeworm infections in humans? A: Taenia saginata
(beef tapeworm) from undercooked meat.
What is the life cycle of Schistosoma species? A: Larvae in water enter skin → migrate to
blood vessels → mature and lay eggs → eggs exit via urine or feces.
, How does trichinellosis progress? A: Eat undercooked pork → larvae invade intestines →
move to muscles → cause pain and swelling.
What are the signs of dental plaque? A: Sticky film of bacteria on teeth.
What is dental tartar? A: Hardened plaque that sticks to teeth.
What are signs of gingivitis? A: Red, swollen, bleeding gums.
What is thrush? A: White patches in the mouth caused by Candida albicans.
What is periodontal disease? A: Infection of gums and bone supporting teeth, may lead to
tooth loss.
What are the symptoms of UTIs? A: Frequent, painful urination, cloudy or smelly urine.
What are the symptoms of cystitis? A: Bladder inflammation, urgency to urinate, burning
sensation.
What are the symptoms of pyelonephritis? A: Kidney infection with fever, back pain, nausea.
What infections are tested in a TORCH panel? A: Toxoplasmosis, Other (like syphilis),
Rubella, Cytomegalovirus, Herpes simplex.
How is bacterial vaginosis diagnosed? A: Vaginal discharge with a fishy odor, clue cells seen
under microscope, and pH > 4.5.
What disease does Trichomonas vaginalis cause? A: Trichomoniasis.
