Bio/Biochem Missed Questions

Question 1

What does gastrin do?

Answer 1

hormone made by G-cells of the stomach that induces parietal cells to secrete HCl

Question 1

What technique is used to measure RNA-level expression?

Answer 1

qRT-PCR
1. RNA extracted
2. reverse transcriptase converts RNA into cDNA
3. amplify cDNA using DNA polymerase

Question 2

What is a nucleoside?

Answer 2

ribose or deoxyribose connected to purine or pyrimidine via B-glycosidic linkage
- no phosphate group

Question 3

What do plasma cells, eosinophils, and neutrophils do?

Answer 3

plasma: differentiated B lymphocytes that create antibodies key in adaptive immunity

eosinophils: type of granulocyte involved in immune response against parasites and allergic reactions in innate immunity

neutrophils: most abundant WBC, first responders to bacteria and fungal infections in innate immunity
- phagocytosis

Question 4

What does a protease do? lipase? amylase? sucrase?

Answer 4

protease: cleaves peptide bonds by hydrolysis

lipase: hydrolysis of fats

amylase: starch into sugars

sucrase: sucrose into fructose (5) and glucose (6)

Question 5

Give me the Hardy-Weinberg Equation.

Answer 5

p+q = 1

p^2 + 2pq + q^2 = 1

Question 6

What hormone promotes fatty acid breakdown?

Answer 6

growth hormone: release of FA from adipose tissue into bloodstream for energy production