The fluid-filled space that helps reduce the friction of a beating heart is called the:a
endocardium.
b. pericardial cavity.
c. interventricular septum.
d. fossa ovalis.
e. auricle.
b
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In bacterial synthesis of polysaccharides, such as starch and glycogen, glucose is donated to the end of the growing chain by ADP-glucose. A similar reaction occurs in bacterial branching of phospholipids when phosphatidic acid is attached to a ________.
A. dihydroxyacetone phosphate B. fatty acyl-ATP C. acetyl-CoA D. cytidine diphosphate carrier
The atmospheric pressure at sea level is
a. 1,000 mm Hg. b. 760 mm Hg. c. 540 mm Hg. d. 400 mm Hg. e. 320 mm Hg.
The most compelling evidence that the choanoflagellates give rise to animals is
A. similarity in DNA sequences B. that they are segmented C. that they are multicellular D. that they are not ancestral, i.e. animals are a polyphyletic group
Put the terms in the correct order from the heart to the body and back to the heart.
A. venules ? arterioles ? capillaries ? veins ? arteries B. veins ? venules ? capillaries ? veins ? arteries C. arteries ? arterioles ? capillaries ? venules ? veins D. arteries ? venules ? veins ? arterioles ? capillaries