Which hormone is critical to reducing the rise in blood glucose, fats, and amino acids that occurs after eating a meal?
A. glucagon
B. insulin
C. cortisol
D. epinephrine
E. growth hormone
B. insulin
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During glycolysis, ATP is produced by oxidative phosphorylation
a. True b. False
Thanks to a novel recessive mutation, a certain plant species has begun to invade colder Arctic regions outside of its normal range. However, this cold-tolerant mutation has not yet become fixed in the population. A second mutation arises that promotes self-pollination. Do you predict that the self-pollination allele will be selected for in the Arctic regions? Why or why not?
A. No. Plants that produce flowers must be cross-pollinated for proper seed development. B. Yes. The self-pollinated plant is more likely to maintain the cold-tolerant mutation, and plants in the Arctic are unlikely to be visited by pollinators. C. No. Outcrossing is always beneficial, since it enhances genetic diversity. D. Cannot make a prediction from the information given. It depends on whether the plant is normally insect pollinated or wind pollinated.
Which theory suggests that many factors or genes contribute to the phenotype in a cumulative or quantitative manner?
A) heritability theory B) multiple factor hypothesis C) additive gene theory D) threshold gene theory
A normal heart is fully repolarized at -60mV. Using the diagram, describe what has occurred in this heart.