Internal and external fertilization both _____
A) produce single-celled zygotes
B) occur only among invertebrates
C) occur only among terrestrial animals
D) depend on the use of copulatory organs
E) occur only among birds
Answer: A
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Which of the following scenarios would provide the most relevant data on population density?
A) Count the number of nests of a particular species of songbird and multiply this by a factor that extrapolates these data to actual animals. B) Count the number of pine trees in several randomly selected 10-meter-square plots and extrapolate this number to the fraction of the study area these plots represent. C) Use the mark-recapture method to estimate the size of the population. D) Calculate the difference between all of the immigrants and emigrants to see if the population is growing or shrinking. E) Add the number of births and subtract the individuals that die to see if the population's density is increasing or decreasing.
Margarine is made by hydrogenating vegetable oils so that they take on the consistency of butter. Propose a chemical basis for this change from a liquid to a solid.
A. Hydrogenation of fats changes them from saturated to unsaturated, which are more solid. B. Trans-fatty acids are changed from unsaturated to saturated, allowing them to solidify. C. Trans fatty acids are changed from saturated to unsaturated, allowing them to solidify. D. Hydrogenation of fats changes them from unsaturated to saturated, which are more solid. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you know about the effect of saturation on the consistency of a fat? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The main form of nitrogenous wastes released by birds to their environment is ____
a. nitrate b. ammonia c. uric acid d. amino acids e. Urea
Which of the following burn injuries or patterns should make you the MOST suspicious for abuse?
A) Burns to the forearm B) Splash burns to a leg C) An arc burn to the hand D) Burns with formed shapes