RNA differs from DNA in that it uses the nitrogenous base ______ instead of ______.
A) adenine; cytosine
B) uracil; guanine
C) cytosine; guanine
D) uracil; thymine
E) adenine; uracil
D) uracil; thymine
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Assume that a species has a diploid chromosome number of 24. The term applied to an individual with 25 chromosomes would be triploid
Indicate whether the statement is true or false
How does ecological economics provide a more realistic approach than neoclassical economics?
A. Ecological economics recognizes that certain raw materials are non-renewable. B. Ecological economics eliminates the cost-benefit analysis approach. C. Ecological economics is based on the concept of the "invisible hand". D. Ecological economics attempts to consider the value of ecosystem services. E. Both A and D are correct.
Scientists have studied the effects of television watching on the metabolic rate of children and its potential implications for childhood obesity. In a study of 15 obese children and 16 non-obese children, it was found that the metabolic rate of all
children significantly decreased while watching television compared to their metabolic rate when they were at normal rest. The drop was greater for obese children, but the difference in drops between the two groups of children was not statistically significant. What is a reasonable conclusion to draw from this study? A) Television watching does not contribute at all to childhood obesity. B) Television watching likely contributes to adult obesity but not childhood obesity. C) Television watching contributes more to childhood obesity than the overconsumption of sugary foods. D) Television watching is an activity that should be carefully considered when studying factors that may affect childhood obesity.
What happens in chimps and humans when the snout is shortened considerably?
A. The sense of smell is dramatically reduced. B. Canine teeth are lost. C. Vocalization becomes possible. D. The eyes move to the front and allow for stereoscopic vision. E. This allows for the development of a chin.