The hypothesis that says, "as one species changes so will the other," is called the ________
a. Law of Independent Assortment
b. Red Queen hypothesis
c. Law of Thermodynamics
d. Principle of Genetics
e. Evolutionary Divergence
b
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Which of the following hormones is one that is made by your fat cells and circulates in the blood then sends a signal to the brain to stop eating when you are full?
A. insulin B. cortisol C. leptin D. glucagon
When conditions are unfavorable, some bacteria:
a. engage in conjugation b. switch to photosynthesis c. form spores, a resistant resting stage d. become pathogenic e. become nonpathogenic
A serving of 30 grams of almonds may have 190 calories listed on a nutrition label. This represents enough energy to raise the temperature of
A. 30 kilograms of water 190°C. B. 190 grams of water 1°C. C. 30 grams of water 190°C. D. 90 kilograms of water 1°C.
What is the result of successful communication between rhizobia and their plant hosts?
A. The rhizobia invade the plant root and begin to fix nitrogen with the assistance of the plant. B. The plant consumes rhizobia as an energy source and carbon, destroying the invading bacteria. C. The plant supplies organic forms of nitrogen to the rhizobia. D. Rhizobia consume the plant tissue as an energy and carbon source, causing disease in the plant.