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.
Answer: D
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Members of which fungal phylum form associations with approximately 90% of land plants by forming mycorrhizae
with them?
a. Glomeromycota b. Basidiomycota c. Chytridiomycota d. Zygomycota e. Ascomycota
Ribozymes
a. are RNA catalysts. b. are proteins that catalyze RNA synthesis. c. are RNA molecules that slow the rate of protein synthesis. d. are the products of RNA degradation. e. are amino acids that catalyze RNA synthesis
Why are most cells so tiny?
What will be an ideal response?