The protist ancestor to animals appears to have belonged to which group?
A. euglenoids
B. foraminifera
C. choanoflagellates
D. dinoflagellates
Answer: C
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You are a parasitologist interested in roundworms affecting wolves. If you know two populations of wolves were separated long enough ago for them to speciate, would you expect their roundworms (derived from a common ancestor) to speciate as well?
What is this process called? A. yes; allopatric speciation B. yes; co-speciation C. no; dispersal D. no; natural selection
In science the word "theory"
a. signifies that a hypothesis has been tested and proven over a period of time. b. means that a scientist has a hunch something is true. c. has essentially the same meaning as "hypothesis." d. carries a considerable amount of doubt as to its validity. e. is an explanation that has been published.
Infectious proteins that are heat resistant and that cannot be destroyed by ultraviolet light or most chemicals are known as ________
Fill in the blank(s) with correct word
A redox reaction involves the transfer of
A) an electron. B) carbon dioxide. C) a hydrogen ion. D) water. E) oxygen.