Which of the following is not associated with mass extinctions?
a. After mass extinctions new species evolve to replace others.
b. Mass extinctions do not affect species randomly.
c. Species living in isolated areas are more susceptible to extinction.
d. Mass extinctions take place over a very long geologic period of time.
e. Although new species may evolve, it will take millions of years to replace the losses of a mass extinction.
D
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The process of racking, used in the production of wines, involves
A. depressurizing bottles. B. addition of carbon dioxide. C. removal of sediments. D. addition of sulfites.
Because all eukaryotic cells must carry out certain functions to maintain life processes, these cells contain similar structural components, regardless of the organism from which they come.
a. true b. false
Which of the following is not an example of a phytochemical?
a. ghrelin b. carotenoids c. lycopene d. flavonoids e. organosulfur compounds
The ant Myrmecia pilosula has the smallest number of chromosomes possible in a eukaryote: females possess only one pair of chromosomes, and males have only one chromosome! Put another way, female M
pilosula can be described as having the haploid condition n = 1 and the diploid condition 2n = 2. Based on this scenario as well as your knowledge of gamete formation, a female M. pilosula can produce gametes with ________ different sets of chromosomes. A) eight B) four C) two D) millions