Briefly, but comprehensively explain the purpose for the staining procedures uses in bacteriology.
What will be an ideal response?
Answer: To view them easier and clearly, to have contrast in order to identify cell morphology of the bacteria
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What homeostatic requirement might explain why discontinuous breathing is only seen in resting insects?
A. Toxic levels of carbon dioxide can build up in active insects. B. Resting insects have more metabolic activity. C. Oxygen can build up in active insects. D. Oxygen is used as quickly as it arrives in active insects. E. Resting insects produce more carbon dioxide.
According to the Hardy-Weinberg principle, at equilibrium the allele frequencies are dependent on the genotypic frequencies
Indicate whether the statement is true or false
Pseudomonas aeruginosa is a common pathogen that infects the airways of patients with cystic fibrosis. It does not grow in the absence of oxygen. The bacterium is probably which of the following?
A. an aerotolerant anaerobe B. an obligate aerobe C. an obligate anaerobe D. a facultative anaerobe
Cladograms include in the phylogenetic tree shared primitive characters and shared derived characters. The derived characters can also be called ________ while the primitive characters can also be called ________.
A. synapomorphy; symplesiomorphy B. synapomorphy; outgroup C. symplesiomorphy; ingroup D. outgroup; synapomorphy E. character states; symplesiomorphy