The "Age of Fishes" is an informal name for which time period?
a. Silurian period
b. Permian period
c. Devonian period
d. Ordovician period
e. Carboniferous period
c
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Certain properties of water—its cohesion, surface tension, and resistance to temperature change—are all:
A. a function of the partial negative charge on the H atoms of a water molecule. B. a function of the hydrogen bonds within a water molecule. C. a function of the hydrogen bonds between water molecules. D. a function of the non-polar covalent bonds between the H and O atoms within a water molecule.
Which of these macromolecules are modified within the rough endoplasmic reticulum?
a. carbohydrates b. lipids c. proteins d. steroid hormones
An examination of the processes of muscle contraction in fishes is an example of
a. an ecological study. b. a taxonomic study. c. an anatomical study. d. a physiological study. e. a homeostatic study.
Which of the following characteristics, if observed in an unidentified green organism, would make it unlikely to be a charophyte?
A) phragmoplast B) peroxisome C) apical meristem D) chlorophylls a and b E) rosette cellulose-synthesizing complex