Phytophthora infestans - Study guides, Class notes & Summaries

BESC Final Exam Questions with Answers All Correct The fungus responsible for the chestnut blight disease is called: A. Ophiostoma ulmi B. Phakopsora pakirizi C. Cryphonectria parasitica D. Phytophthora infestans - Answer-C. Cryphonectria parasitica Late Blight is a disease of both potato and tomato that was associated with the great famine in Ireland in the 1800's. The casual organism is an oomycete that is necrotrophic. Both mating types of Phytophthora infestans have been distri...

BESC 204 Final Exam with Complete Solutions Graded A+ This is the name used in class for the fungal structure characterized by a compact mass of hyphae with or without host tissue, usually with a darkened rind, and capable of surviving unfavorable environmental conditions: - Answer-sclerotium When a sporangium of Phytophthora infestants germinates: a. the sporangium produces a germ tube that forms an appressorium and infects the host b. the sporangium produces zoospores that encyst and...

BESC 204 Test Questions with Correct Answers Oomycetes vs True Fungi (on the Oomycetes side) - Answer--Cell walls cellulose not chitin -Nuclei Diploid -No septa -Zoospores make two flagella -Biochemical pathway for lysine synthesis -Ultrastructure of mitochondria is like plants, not like fungi David Lindley - Answer-Blamed Late Blight on the plants taking up too much water Berkeley - Answer-Was convinced that a mold was involved Anton DeBary - Answer-Proved fugus Botrytis infest...

oomycota - Answer-not "true fungi", characterized by production of thick-walled oospores and the production of mobile flagellate asexual spores (zoospores), more closely related to algae, cell walls contain cellulose, nuclei are diploid, no septa oospore - Answer-sexual spore of oomycete zoospore - Answer-mobile, flagellate asexual spore of oomycete, have 2 flagella oogonium - Answer-"female" part of oomycete sexual reproduction; contains oospores antheridium - Answer-"male" pa...

BESC 204 Exam Exam Questions Marking Scheme New Update Phytophthora infestans - Answers -the fungus that caused Late Blight of Potato Direct germination - Answers -germination by hyphal growth Indirect germination - Answers -germination by zoospore formation Antheridium - Answers -"male" part of oomycete sexual reproduction Plasmopora viticola - Answers -fungus that causes the disease Grape Downy Mildew Obligate pathogen - Answers -The pathogen can only complete their develo...

BESC 204 Exam 2 Complete Questions And Solutions

Not very many proteins in the eukaryotic cytoplasmic membrane. Where did they go? - Answer-They are still in the membrane and they are still busy, but most of the proteins went to the mitochondrial membrane in eukaryotes. Cellulose and Chitin - Answer-Use specific b-1,4-glycosidic bonds between sugars provides strength and rigidity. In algae Fungi - Cell Wall - Answer-You have a NAG in chitin for cell walls in fungi. The cell wall is all NAGs Cytoskeleton Function - Answer-Involved in intr...

MICROBIOLOGY EXAM 1: CHAPTERS 1-3 WITH COMPLETE SOLUTIONS 100% microorganism - correct answer any organism too small to be seen by the naked eye ubiquity - correct answer microorganisms are found in almost every environment and habitat on earth. the 8 impacts of microorganisms - correct answer 1. Oxygen production photosynthesis 2. Decay 3. Biotechnology/Recombinant DNA Technology 4. Antibiotic and Vaccines 5. Industry 6. Agriculture 7. Bioremediation 8. Disease pathogen - cor...