Mixed 2

Question 1

Define negative predictive value

Answer 1

Probability that the px truly doesn’t have the disease with a negative test result.
NVP= true negatives/ (true negatives+false negatives)

Question 2

Define a frameshit mutation

Answer 2

Occurs when deletion/addition of a # of nucleotides not divisible by 3. Causes the production of a different protein

Question 3

At MacConkey agar, what color appear when lactose fermenters are cultured?

Answer 3

Pink. Lactose non-fermenters form white colonies

Question 4

In which trimester of pregnancy occurs the pleuroperitoneal folds closure? What condition is presented if there’s a failure?

Answer 4

First trimester. Congenital diaphragmatic hernia ➡️ pulmonary hypoplasia

Question 5

Type of cells involved in graft vs host disease

Answer 5

Graft T lymphocytes vs host MCH antigens

Question 6

Excessive and distressing anxiety due to separation from attachment figures. In children, there’re physical symptoms and nightmares

Answer 6

Separation anxiety disorder

Question 7

Comma-shaped, oxidase +, highly motile Gram - rod, acid labile

Answer 7

Vibrio cholerae

Question 8

Name of the union between osteocytes

Answer 8

Gap Junction