Which wavelengths of light are most likely to be absorbed by chlorophyll b?
A. UV
B. blue
C. red
D. infrared
B. blue
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What type of organisms can generate organic molecules and obtain energy from inorganic molecules like iron, sulfur, and hydrogen?
a. chemoautotrophs b. photoautotrophs c. heterotrophs d. homotrophs e. organotrophs
You are excited because your lab is studying the first microorganisms retrieved from Mars! Interestingly, their genetic material consists of a single-stranded nucleic acid with six different nitrogenous bases. Like organisms from Earth, segments of the nucleic acid contain the code for making proteins. If the genetic code in these organisms was read in groups of 2 bases instead of 3, what is the maximum number of amino acids that could be coded for assuming that only one codon functioned as a stop codon? (Enter your answer as a numeral not a word, e.g. enter 17 not seventeen.)
Fill in the blank(s) with the appropriate word(s).
What is the name for parasitic viral DNA that has been integrated into the chromosome of its bacterial host?
A. arbovirus B. prophage C. prophase D. viroid E. virion
What is the causative pathogen for bubonic and pneumonic plague?
A) Yersinia pestis B) Yersinia enterocolitica C) Yersinia pseudotuberculosis D) Salmonella enterica E) Salmonella flexneri