A new microbe has been discovered in the rumen of sheep. Microscopy shows no evidence of a nuclear membrane and biochemical studies of the cell wall demonstrate the lack of peptidoglycan. Metabolic studies show that this microbe generates methane. This microbe would most likely be classified in ________.
A. domain Bacteria
B. domain Eukarya, Kingdom Fungi
C. domain Eukarya, Protists
D. domain Archaea
Answer: D
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What is a tool of population ecology to study populations?
A. iteoparity B. growth ecology C. demography D. exponential growth E. disease ecology
Which class of organisms makes up the detrital food web?
a. carnivores and decomposers b. decomposers and detritivores c. decomposers and producers d. herbivores and carnivores e. producers and herbivores
Each of the following involves apoptosis except
A) removing webbing between digits during development. B) decreasing neurons during brain development. C) destroying pathogen-infected cells. D) removing white blood cells at the end of their life span. E) generating a cancerous tumor.
To test the prediction that increased phosphorous levels in lakes lead to increased minnow populations, scientists survey 20 lakes across Minnesota, measuring phosphorous content and quantifying minnow abundances. This is an example of what type of scientific approach?
What will be an ideal response?