Examine this electron micrograph of a chloroplast.
a. Identify the stack of membranes labeled A.
b. Identify the region labeled B.
c. Would the production of organic compounds during the light-independent reactions occur in region b or on the membranes labeled a?
d. Would you expect the plant in which this structure was found to have been illuminated with strong light immediately before it was prepared for electron microscopy? Why or why not?
a. Identify the stack of membranes labeled A. thykaloid membranes
b. Identify the region labeled B. stroma
c. Would the production of organic compounds during the light-independent reactions occur in region b or on the membranes labeled a? b
d. Would you expect the plant in which this structure was found to have been illuminated with strong light immediately before it was prepared for electron microscopy? Why or why not? No, a chloroplast that had been illuminated would contain starch.
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Which of the following is incorrectly paired?
a. villi—increase surface-to-volume ratio for absorption of nutrients b. pancreas—secretes substances that neutralize stomach acid c. gallbladder—produces bile that breaks down fat globules d. colon—functions in water reabsorption
Which of the following statements is true?
a. Darwin did not know what mechanisms were responsible for the variation he saw. b. The blending theory of inheritance provides excellent support for evolution. c. Darwin received Mendel’s paper but did not understand its significance. d. The explanation for genetics had no implications for evolution. e. All of these are true.
Give examples of plants in each of the gymnosperm phyla. Differentiate among them with respect to morphology and
reproductive characteristics. Which is the most diverse? Least diverse? What will be an ideal response?
Glycolysis is an ________ reaction.
A) exergonic B) endothermic C) unregulated D) endergonic E) abnormal