Which one of the following is a lophotrochozoan?
A) Crustaceans
B) Arthropods
C) Mollusks
D) Chelicerata
E) Nematoda
Answer: C
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Consider an organism whose karyotype shows it to have a total of 60 chromosomes. How many chromosomes would be contained in the sperm of this organism?
A. 23 B. 30 C. 46 D. 60 E. 90
Cell theory states that ________.
A. cells come from non-cell entities B. cells can be created from sexual reproduction or from asexual reproduction C. all life is made up of cells, and cells arise from preexisting cells D. cells go through the process of cell division
Competitive exclusion is the result of
a. mutualism. b. commensalism. c. competition. d. predation. e. parasitism
What strategy will encourage a safer engagement with alcohol?
A) adding energy drinks to any alcoholic beverage B) alternating drinking glasses of water with alcoholic drinks C) drinking only two to three alcoholic beverages per hour D) eating a large meal after consuming alcohol