Which of the following statements are true of CAM photosynthesis? (Select all correct answer options.)
A. The Calvin cycle is active during the day.
B. Organic acids are decarboxylated at night.
C. Organic acids are decarboxylated in
daylight.
D. CO2 capture and fixation occur at different
times.
E. CO2 capture and fixation occur in different
cells.
A,C,D
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A student designed an experiment to see if plants grow better when watered with a sugar solution. He divided the plants into six groups, measured the initial height of each plant, and calculated the average height for each group. Once a week for two months, he watered the plants in each group using a different sugar solution for each plant group. At the end of two months, he measured the final height of each plant and calculated the average height for each group. The student’s data are shown in the table below.
Which of these statements explains why the plants in Groups E and F died? A. The high sugar content caused too much water to move out of the root cells. B. The high sugar content caused too much water to move into the root cells. C. The high sugar content prevented the plant from capturing energy. D. The high sugar content clogged the pores in the cell membranes
Which phrase best describes "honeydew"?
a. phloem sap leaving the anus of an aphid b. phloem sap harvested as syrup c. xylem sap separated from syrup d. xylem sap forced out of the margins of leaves
A bacillus with single flagella at both ends would be classified as
A) monotrichous. B) amphitrichous. C) peritrichous. D) lophotrichous.
Which of the following contributes to the invasiveness of Treponema pallidum?
A) hyaluronidase B) fimbriae C) lipooligosaccharide in the cell wall D) TSST E) IgA protease