Blood Answers

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Karl Landsteiner placed animal blood in human blood and discovered that the blood clumped. Which did his creativity lead to?

A
understanding the process of blood clotting
B
understanding the formation of blood cells
C
understanding the function of antibodies
D
understanding A, B, AB, and O blood groups
2
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Sickle cell anemia is a condition where the red blood cells are deformed. Which is affected by sickle cell anemia?

A
healing of cuts
B
transportation of oxygen
C
creation of blood type
D
protection against disease
4

Alexander Fleming was a biologist who was best known for his discovery of the antibiotic penicillin. During his research, Dr. Fleming noticed that there was no bacterial growth where there was mold growing on his petri dishes. He could have thrown out his plates, but instead he cultured the mold. How did Dr. Fleming’s creativity lead to a scientific discovery?

A
He noticed that bacteria cells and mold coexisted well.
B
He observed that bacterial cells had become mold.
C
He concluded that the mold inhibited the growth of bacteria.
D
He inferred that mold and bacteria share most of their DNA.
5

What are the threadlike proteins that attach to platelets in blood clotting?

A
coagulant
B
thrombocytes
C
hemoglobin
D
fibrin
6

Which component of blood makes up 55 percent of the blood volume?

A
red blood cells
B
white blood cells
C
platelets
D
plasma
7

Transfusing mismatched blood types is a problem for a patient because

A
it slows down digestion.
B
it changes blood composition.
C
it causes infection.
D
it causes clots in blood vessels.
9

Which component of blood consists of cell fragments and is the main contributor to healing cuts?

A
erythrocytes
B
thrombocytes
C
leukocytes
D
plasma
10

Kristen cut her hand on a piece of glass. As the blood clots, how do white blood cells prevent bacteria on the glass from infecting her blood?

A
They bring more oxygen to the site for repair.
B
They destroy pathogens that enter the wound.
C
They form the platelet plug.
D
They cause blood vessels to constrict.

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