Select the features that are lacking in amphibians but present in reptiles and that confer an advantage to reptiles for living on land.
A. ability to concentrate urine
B. egg with an amnion, yolk sac, allantois, chorion, and shell
C. skin resistant to water loss
D. breathing by buccal pumping
Answer: C
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It is commonly said that plants, especially trees, produce oxygen, but this is an oversimplification of metabolism in plants. Which of these statements is more accurate?
a. Plants produce oxygen ions into the atmosphere which recombine into ozone molecules. b. Plants only release oxygen when supplied with adequate quantities of glucose and water. c. Plants release oxygen during photosynthesis and reabsorb it during carbohydrate catabolism. d. Plants only produce oxygen after they have been digested or decomposed by other organisms.
What was the most significant conclusion of Griffith's experiments with pneumonia in mice?
A) S-strain bacteria can cause pneumonia. B) There is a substance present in dead bacteria that can cause a heritable change in living bacteria. C) Heat destroys the hereditary material. D) The genetic material was definitively proven to be DNA. E) Mice exposed to the S-strain bacterium became resistant to the R-strain bacterium.
Animals that reproduce sexually and have both male and female organs are known as __________.
Fill in the blank(s) with the appropriate word(s).
The use of a positive selection marker in the development of Golden Rice 2 allowed the transgenic plants to grow on ________, which is usually unusable by plants
A) fructose 6-phosphate B) xylose 6-phosphate C) mannose 6-phosphate D) glucose 6-phosphate