Pre-Class questions test 1

Question 1

What are the main functions of red blood cells?

Answer 1

O2 and Co2 transport

Question 2

When a blood vessel ruptures, is clotting always required to stop the bleeding?

Answer 2

no, sometimes a platelet plug is sufficient

Question 3

What overall type of mechanism is clotting?

Answer 3

positive feedback that gets faster the bigger the clot

Question 4

How is clotting limited to just the leak?

Answer 4

a separate mechanism in which thrombin absorbed by fibrin and inactivated

Question 5

T or F: any situation that produces hypoxia in tissues inhibits erythropoietin production.

Answer 5

false; hypoxia stimulates production

Question 6

Sickle-cell anemia is due to

Answer 6

a single base-pair mutation in the beta globin chain

Question 7

What protein is required in the GI tract for absorption of Fe?

Answer 7

aptransferrin - helps absorption via signal mediated endocytosis

Question 8

Fe is used for what apart from hemoglobin and myoglobin?

Answer 8

cytochromes for the ETC and p450 drug metabolizing enzymes

Question 9

What property allows blood cells to pass through small capillaries?

Answer 9

an excess of a deformable membrane