QUIZ 1. What is not a feature of a prokaryote? a. Nucleoid b. Mitochondria c. Circular DNA d. Peptidoglycan cell wall Answer: b. Each of these is a feature of a prokaryote, except that they do not have intracellular membrane-bound organelles, including mitochondria. 2. What is not a main difference between prokaryotic DNA and eukaryotic DNA? a. Prokaryotes are diploid and eukaryotes are haploid b. Prokaryotes have circular DNA c. Prokaryotes have few introns (noncoding segments) d. Transcription and translation occur simultaneously in prokaryotes Answer: a. Prokaryotes are haploid and eukaryotes are diploid, referring to the number of copies of the different genes. Haploid organisms have just one copy of a given gene. 3. What are the bacterial structures called in which there are channels made that allow for circulation of nutrients so they better reach the entire cluster of bacteria? a. Bacterial mats b. Bacterial spores c. Biofilms d. Microcolonies Answer: d. Microcolonies will form channels and a more complex structure that allows the better circulation and diffusion of nutrientcontaining liquids from the environment.
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