The distribution of terrestrial biomes on Earth depends mostly on ________
A) temperature
B) rainfall
C) both temperature and rainfall
D) neither temperature nor rainfall; it depends on latitude and longitude
C
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A common motif found in transposons and integrases is the DDE motif. Which of the following is a true statement with regard to the DDE motif?
A. This motif refers to the three consecutive amino acids that are found in the primary sequence of transposons and integrases. B. This motif refers to the presence of three amino acids not arranged consecutively in the proteins primary sequence but present together in the active site. C. The DDE motif is composed of two glutamates and one aspartate. D. Conservation of the DDE motif has not been useful in demonstrating evolutionary relatedness among transposases and integrases. E. The DDE motif is a structural similarity but has no functional relation in transposases and integrases.
Four of the five answers listed below are
characteristics of eudicots. Select the EXCEPTION.
a. two cotyledons b. flower parts in four or fives or multiples of these numbers c. leaf veins running parallel d. pollen grains with three pores or furrows e. vascular bundles organized in a ring in the ground tissue
Pygmies likely evolved because individuals who reproduced early in life were more fit than individuals who reproduced later in life.
a. true b. false
If a bacterial smear were stained with a blue basic stain, then counterstained with a red acidic stain, one would expect to see ________.
a. Red cells against a blue background b. Blue cells against a red background c. Red and blue cells against a colorless background d. Red acid-fast cells