1. Which of the following kinds of cells eliminate their own waste material?
1 point
A. Plant cells, but not bacteria cells
B. Bacteria cells, but not plant cells
C. Fungi cells, but not plant or bacterial cells
D. All cells
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2. Bacteria are important because they _______. (Please select all correct responses.) *
1 point
A. recycle nutrients
B. may carry out nitrogen fixation
C. always cause disease
D. help us to digest food and make vitamin K
E. make some of our food and beverages
F. can protect us from pathogenic bacteria and fungi
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3. After careful analysis, Maria found that a single celled organism, lacked nuclei and was able to get energy through chemosynthesis. In which Kingdom does it most likely belong? *
1 point
A. Viral
B. Fungi
C. Archaebacteria