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BESC 204 Exam 2 with correct Answers (Graded A)
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BESC 204 Exam 2 with correct Answers
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BESC 204 Exam 2 with correct AnswersPhytophthora infestans - Answer -the fungus that caused Late Blight of Potato
Direct germination - Answer -germination by hyphal growth
Indirect germination - Answer -germination by zoospore formation
Antheridium - Answer -"male" part of oomycete sexual reproduction
Plasmopora viticola - Answer -fungus that causes the disease Grape Downy Mildew
Obligate pathogen - Answer -The pathogen can only complete their development on a
living host.
Ex. Rusts
Obligate biotroph - Answer -pathogens that extract nutrients only from living plant
tissues and cannot grow apart from their hosts.
whiplash flagella - Answer -type of flagellum with no hair-like structures
tinsel flagella - Answer -type of flagellum with many hair-like structures attached
germ theory - Answer -the theory that all contagious diseases are caused by
microorganisms
peptidoglycan - Answer -main wall polymer of bacteria
penicillin - Answer -antibiotic produced naturally by certain blue molds
mode of action: it prevents the cross-linking of small peptide chains in peptidoglycan.
cephalosporin - Answer -one of several broad spectrum antibiotic substances obtained
from fungi and related to penicillin
similar mode of action as penicillin; it affects the peptidoglycan
, griseofulyin - Answer -fungistatic antibiotic, that is it will inhibit the fungal growth and
does not kill fungi; it is not fungicidal
effective against fungal infections of hair, nail, and sking
Mode of Action: inhibits microtubule dynamics
fusic acid - Answer -
cilofungin - Answer -a semi-synthetic antibiotic
developed to combat Candida albicans
cyclosporine - Answer -immuno-modulator (depresses active immune system)
helpful for diabetics to free them from insulin injections
prevents rejection from transplants
lovastatin - Answer -inhibits cholesterol synthesis by blocking the action of an Enzyme
HMG-CoA redcutase
secondary metabolite - Answer -products of metabolism that are not essential for
normal growth, development or reproduction of an organism.
mycotoxin - Answer -A secondary metabolite produced by fungus that is toxic to
humans and/or animals
turkey-x disease - Answer -the disease that caused 100,000 turkeys to die and
mycotoxins to be discovered.
aflatoxin - Answer -Aspergillus flavus
Primary site of action is the liver.
Commonly associated w/ liver cancer.
It was discovered when the Turkey-disease occurred and killed 100,000 turkeys in
Europe. They realized all of the turkey's had eaten the same peanut meal which the
fungus Aspergillus flavus was growing on.
Peanuts and corn are susceptible
zearelenone - Answer -Fusarium toxin
It mimics estrogen, causes malformation of female reproductive organs
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