You perform a serial dilution and plate 0.1 mL from the 10^-4 dilution, obtaining 80 colonies. What is the CFU/mL in the original sample?

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#Question id: 12158

#XL - S Microbiology

Which of the following is correctly described as a primary producer?

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#Question id: 12158

#XL - R Botany

Which of the following is correctly described as a primary producer?

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#Question id: 12159

#XL - R Botany

You are given the task of designing an aerobic, mixotrophic protist that can perform photosynthesis in fairly deep water (e.g., 250 m deep), and can also crawl about and engulf small particles. With which two of these structures would you provide your protist?

1. hydrogenosome

2. apicoplast

3. pseudopods

4. chloroplast from red alga

5. chloroplast from green alga

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#Question id: 12160

#XL - S Microbiology

Which of these was not derived from an ancestral alpha proteobacterium?

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#Question id: 12160

#XL - R Botany

Which of these was not derived from an ancestral alpha proteobacterium?

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#Question id: 12311

#XL - T Zoology

Animals tend to maximize their energy intake- to- expenditure ratio. What is this behavior called?