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

Biology & Microbiology

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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.

Biology & Microbiology

Which of these macromolecules are modified within the rough endoplasmic reticulum?

a. carbohydrates b. lipids c. proteins d. steroid hormones

Biology & Microbiology

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.

Biology & Microbiology

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

Biology & Microbiology