In the four body plan cross sections shown on the last two slides, what major omission has been made for all four animal phyla?
A. heart
B. fur
C. nervous system
D. A and B
E. A and C
F. B and C
G. A, B and C
Answer: C. nervous system
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____________________ Indicate whether the statement is true or false.
Enzymes that readily break starch apart cannot hydrolyze the glycosidic linkages found in cellulose. Why is this logical?
A) The geometry of the bonds is different, and the shapes of enzyme active sites are highly specific. B) Starch is held together by hydrogen bonding, not covalent bonding. C) Cellulose molecules are highly branched, and enzymes are too bulky to fit. D) Starch is held together by peptide bonds, not glycosidic linkages.
The meshwork that forms the fabric of a blood clot mostly consists of
A. fibrinogen. B. fibrin. C. thrombin. D. prothrombin. E. collagen.
Which of the following types of cells is not a leukocyte?
a. neutrophils b. eosinophils c. thrombocytes d. monocytes e. lymphocytes