Which of the following represents an early
stage in primary succession?
a. pine trees
b. mosses and lichen of bare rock
c. weedy annual plants in an open field
d. climax species in succession
e. fields of food crops
B
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The axon of one neuron is functionally connected to the dendrite of an adjacent neuron by the _____________________
Fill in the blank(s) with correct word
The person credited with being the codiscoverer of the theory of natural selection was
a. Alfred Wallace. b. Charles Lyell. c. Thomas Malthus. d. James Hutton. e. John Henslow.
Whether an area of the country will be a desert or grassland is primarily determined by
A. the average temperature. B. the average rainfall. C. the length of the winter. D. the kinds of animals in the area.
Myosin is a contractile protein found in muscles that is composed of three pairs of subunits, two heavy chains, and two pairs of two different types of light chains, for a total of six subunits. Myosin contains what level(s) of protein structure?
A) primary only B) primary and secondary only C) primary, secondary, and tertiary only D) primary, secondary, tertiary, and quaternary