Which of the following is widely regarded as a healthy approach to losing weight?
A) gastric bypass surgery
B) regularly engaging in exercise in addition to monitoring food intake
C) substituting fatty acids for carbohydrates
D) trimming daily carbohydrates back to less than 80 grams per day
Answer: B
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Which of the following is considered a new emerging infectious disease?
A. Polio B. Malaria C. Cholera D. SARS E. Smallpox
Which will require a longer time to kill?
A. a smaller population of microorganisms B. a larger population of microorganisms C. Killing will be equally as rapid in a large or a small microbial population. D. There is no way to predict which will require a longer kill time.
Callaway and Aschehoug's study concluded that an invasive Eurasian grass species can outcompete native North American grasses through
A. faster seed germination. B. secretion of allelochemicals. C. anti-herbivore compounds. D. producing more viable seeds. E. producing seeds year-round.
To analyze genetic variation in populations, one approach is to consider the frequency of alleles. When calculating an allele frequency for a diploid species, how many copies of an allele are present?
A. 1 B. 2 C. 3 D. 4 E. 5