The quality of food herbivores ingest is relatively nutrient rich, therefore their digestive systems are
relatively simple.
Indicate whether the statement is true or false.
ANS: F, poor, specialized
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The largest number of food servings in your daily diet should be from
(a) meats and beans. (b) dairy products. (c) vegetables and fruits. (d) grains.
How does caffeine influence metabolic pathways?
A. Caffeine stimulates pathways that control blood glucose levels, resulting in a decrease in blood glucose. B. Caffeine stimulates the metabolic pathways that result in excess water production, causing frequent urination. C. Caffeine increases energy generated by cellular respiration pathways by increasing metabolic rates. D. Because caffeine is a stimulant, it only stimulates metabolic pathways; it never blocks or inhibits them. E. Caffeine causes the brain to release hormones that result in the storage of fatty acid chains. This process generates energy.
Which of the following PCR procedures includes all of the others?
A. DNA is amplified for one cycle. B. Primers are extended at 72oC. C. DNA is denatured at 95oC. D. DNA is reannealed at 50oC
The carrying capacity of the Earth for humans is influenced by
A. food and energy supply. B. disposal of waste products. C. interaction with other organisms. D. All of these answers are true.