Science Bowl

BIOLOGY

Biology - 21

BIOL-91; Multiple Choice:  When a human donor gives a pint of blood, it usually requires how
many weeks for the body RESERVE of red corpuscles to be replaced?  Is it:

a)  1 week
b)  3 weeks
c)  7 weeks
d) 21 weeks

ANSWER:   C -- 7 weeks

BIOL-91; Short Answer:  There are three substances found in human blood which carry oxygen
and which begin with the letter "H".  Name two of these substances.

ANSWER:   Hemoglobin,  Hemocyanin,  Hemerythrin

BIOL-91 Multiple Choice:  The several types of white blood cells are sometime collectively
referred to as:

a)  erythrocytes

(pron: eh-rith-row-cites)

b)  leukocytes

(pron: lew-kah-cites)

c)  erythroblasts

(pron: eh-rith-rah-blast)

d)  thrombocytes

(pron: throm-bow-cites)

ANSWER:   B -- leukocytes

BIOL-91; Multiple Choice:  The condition in which there is a DECREASE in the number of white
blood cells in humans is known as:

a)  leukocytosis

(pron: lew-kO-sigh-toe-sis)

b)  leukopenia

(pron: lew-kO-pea-nee-ah)

c)  leukemia

(pron: lew-kee-me-ah)

d)  leukohyperia

(pron: lew-kO-high-per-e-ah)

ANSWER:   B -- leukopenia

BIOL-91; Multiple Choice:  The smallest of the FORMED elements of the blood are the:

a)  white cells
b)  red cells
c)  platelets
d)  erythrocytes

ANSWER:   C -- platelets