Microbiology OSU Exam #1Questions With Correct Answers Graded A+

Hooke was the first to do what in 1665? - correct answers Observe a microscopic mushroom Leeuwenkook did what afterward - correct answers Observed Bacteria, protozoa, algae etc in 1674 Jenner created what in 1796? - correct answers Smallpox vaccine Louis Pasteur proved what to be false? - correct answers Spontaneous Generation 1861 What can cause disease? - correct answers Pathogens Nitrogen fixation is only limited to? - correct answers Microbes Prokaryotic cells can be described as.... - correct answers single celled, binary fission and has no nucleus Characteristics of Bacteria - correct answers Many are motile, round, rod or spiral shaped, ridged cell walls, some cause disease. What is unique about archea? - correct answers They can survive extreme environments. Eukaryotes include what? - correct answers A nucleus, algae, fungi and protozoa What is different about Protozoa compared to fungi or algae? - correct answers They lack a cell wall. Viruses are simply what? - correct answers nucleic acid packed into a protein coat with no ribosomes. Groupings of cells depend on what? - correct answers the plane on which they divide Gram positive will resemble what color? - correct answers purple Gram negative contain what to make them pink? - correct answers Outer membrane Cell walls that are gram-positive are what? - correct answers Gram positive and has a thick peptidoglycan layer. Porins do what? - correct answers selectively lets things cross cells that maintain the primary red stain are considered what? - correct answers acid-fast Mycoplasma - correct answers Lack cell wall, vary in cell shape, and stronger membrane Osmosis of cell - correct answers water flows in Hypertonic cell - correct answers water flows out of cell. Passive transport - correct answers high to low Active Transport - correct answers low to high (needs energy input) Where are chromosomes found? - correct answers In the nucleoids Ribosomes are the site of what? - correct answers protein synthesis Binary fission - correct answers replicate chromosome, pinches inward after elongating, cytoplasms split, two daughter cells. Binary fission equation - correct answers 2^? psychrophile - correct answers -5 - 15 degrees c Carbon fixation - correct answers convert inorganic CO2 to organic carbon Catabolism - correct answers Breaks things down Anabolism - correct answers Builds things up a