You are carrying out an experiment on several aquatic plants in your fish tank. You decide to expose two of the plants to green light and two to blue light
You want to determine which type of light is best for the light reactions, so to reach your conclusions, you decide to record the amount of oxygen bubbles produced. Which of the following results would be expected?
A) There would be more bubbles from the plants in blue light than from those in green light.
B) No bubbles would be produced in either green light or blue light.
C) There would be more bubbles from the plants in green light than from those in blue light.
D) There would be the same number of bubbles from plants in blue or green light.
A
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A group of patients was seen on an emergency basis complaining of abdominal craps and watery diarrhea within 5 hours of attending a picnic in which ham, potato salad, and custard-filled pastries were on the menu. Which of the following is the likely cause of this disease?
A. Attachment and disruption of intestinal lining due to parasitic infection B. Bacterial colonization and toxin production C. Bacterial adherence and invasion D. Performed bacterial toxin E. Replication of virus that prevents reabsorption of water
Which of the following is incorrect about HIV?
A. It uses reverse transcriptase to produce a DNA copy of its RNA. B. It only needs a CD4 receptor on a cell in order to infect it. C. It is related to a chimpanzee virus. D. It leaves a cell by budding from it. E. It takes about 8 to 10 years for it to cause symptoms.
Simple eukaryotes that carry out oxygenic photosynthesis and reproduce by means of alternation of generations are known as
A. algae. B. fungi. C. slime molds. D. euglenids. E. arachnids.
Organisms in the deep sea must tolerate
a. low temperatures and high nutrient levels. b. low temperatures and moderate nutrient levels. c. moderate temperatures and low nutrient levels. d. low temperatures and low nutrient levels.