Micro 260, LCC, Optional Exam Questions with Correct Answers

What is the study of fungi Mycology Which of the following is not a domain in the three-domain system? bacteria animalia archea Eukarya Animalia A unicellular organism which lives in a hot sulfur vent on the ocean floor and lacks peptidoglycan in it's cell wall would belong to the domain Archaea Who was credited with first describing living microorganisms Anton Van Leeunwenhoek Some bacteria stain Gram-positive and others stain Gram-negative due to differences in the structure of their cell wall Of the following, which one is not found in prokaryotic cells? plasma membrane chromosome mitochrondria plasmids ribosomes mitochondria The semipermeable structure controlling the transport of materials between the cell and its external environment is the Plasma membrane Plasmid circular molecules of extra chromosomal DNA When placed into a hypertonic solution (higher concentration of solutes outside than inside the cell), a bacterial cell will: shrink Endospores allow a cell to survive environmental changes