BIO-205 Microbiology Midterm Exam Questions and Correct Answers
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Course
BIO 205
Institution
BIO 205
Fungi are important because of their ability to help many plants grow, cause disease in plants, make certain foods and beverages, and spoil food.
All fungi have ____ in their cell walls. chitin
The mechanism by which genes are transferred into bacteria via viruses is called transduction
The sour...
BIO-205 Microbiology Midterm Exam Questions and Correct Answers Fungi are important because of their ability to ✅help many plants grow, cause disease in plants, make certain foods and beverages, and spoil food. All fungi have ____ in their cell walls. ✅chitin The mechanism by which genes are transferred into bacteria via viruses is called ✅transduction The source of variation among microorganisms that were once identical is ✅mutation Intercalating agents ✅act during DNA synthesis and often result in frame shift mutations. Gene transfer that requires cell -to-cell contact is ✅conjugation Segments of DNA capable of moving from one area in the DNA to another are called ✅transposons A clever technique that streamlines the identification of auxotrophic mutants is ✅replica plating Thymine dimers are dealt with by ✅photoreactivation repair and excision repair Irradiation of cells with ultraviolet light may cause ✅thymine dimers The group of Fungi in which sexual reproduction has not been observed is ✅Deuteromycetes A tangle of fungal hyphae is generally known as a ✅mycelium Which technique(s) is/are used to help identify and classify bacteria? ✅Microscopic examination, culture characteristics, biochemical tests, and nucleic acid analysis. Lichens may be an association of ✅algae and fungus The terms yeast, mold, and mushrooms refers to fungal ✅morphology Gram positive encapsulated diplococci found in sputum is indicative of ✅Streptococcus pneumoniae Fungi are often capable of locomotion through the use of flagella. ✅False Mycorrhizae ✅are vital for the survival of many plants and increase the absorptive ability of roots All known species of bacteria are described in Bergey's Manual of Systematic Bacteriology. ✅True Chemical mutagens often act by altering the ✅hydrogen bonding properties of the nitrogen bases Fungi are classified according to their ✅method of sexual reproduction Most fungi are ✅aerobic or facultatively anaerobic Modern approaches to evolutionary taxonomy often involve ✅comparison of DNA and RNA X-rays ✅cause single and double stranded breaks Which strand would UV radiation have the most effect? ✅AATTAGTTC The return of carbon dioxide to the atmosphere and nitrogen to the soil is due to the action of ✅fungi and bacteria Intracellular Gram negative diplococci found in a urethral sample from a male is indicative of ✅Neisseria gonorrhea Which of the rRNA molecules has proven the most useful in taxonomy/identification? ✅16S The designation his - refers to ✅the genotype of a bacterium that lacks a functional gene for histidine synthesis and bacteria that are auxotrophic for histidine Which would have the least effect on the amino acid sequence? ✅addition/deletion of 3 consecutive nucleotides Fungal diseases are generally referred to as ✅mycoses Coccidioidomycosis is ✅a fungal disease and caused by Coccidioides sp
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