What charge does the bacterial cell wall have? What charge do the various stains we used have?
What will be an ideal response?
Ans: The bacterial cell wall has a negative charge. The various stains we used had a positive charge.
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The part of the stomach designated by the letter “C”
in the above figure is called a. pyloric sphincter. b. esophagus. c. mucosa. d. duodenum. e. none of these.
Which of the following is/are true about natural selection?
A. On average, it favors the survival of individuals that have adaptive characteristics. B. It acts on genotypes rather than phenotypes. C. It always selects for more complex forms. D. It assures the survival of every fit individual. E. All of the choices are correct.
Populations of different species comprise a(n) ____
a. populations b. biosphere c. ecosystem d. community e. evolution
Which molecules recognize specific codons and transport amino acids to translate those specific codons?
A. tRNA B. rRNA C. DNA D. mRNA