During photosynthesis, which of the following is the most important molecule in the conversion of light energy from the sun into chemical energy?
a) oxygen
b) glucose
c) chlorophyll
d) water
e) carotenoid
Ans: c) chlorophyll
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When protists feed on solid nutrients such as bacteria by phagocytosis, they are said to be using ________ nutrition.
A. holozoic B. endozoic C. saprozoic D. parasitic
Which of the following statements regarding waterborne pathogens is incorrect?
A. Microbes can enter surface water through ordinary exposure to air and soil. B. Waterborne pathogens are primarily Campylobacter, Salmonella, Shigella, Vibrio, and Mycobacterium. C. Waterborne pathogens include bacteria, viruses, and protozoans. D. Encysted protozoans can survive in water for long periods without a human host.
What is true about organisms that are a part of the same clade?
a. They all share the same basic characteristics. b. They evolved from a shared ancestor. c. They usually fall into the same classification taxa. d. They have identical phylogenies.
For each glucose molecule that enters glycolysis, how many times does the Krebs cycle turn?
A. One B. Two C. Three D. Four