BIOS 242 Exam 2 Questions With 100% Complete Solutions
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Course
BIOS 242
Institution
BIOS 242
BIOS 242 Exam 2 Questions With 100% Complete Solutions
A recently discovered new species of microorganism which does not use oxygen in its metabolism was discovered growing in pH 10, in hot springs, green in color and uses CO2 as source of carbon nutrient rich soil. Describe in detail the nutr...
A recently discovered new species of microorganism which does not use oxygen in its
metabolism was discovered growing in pH 10, in hot springs, green in color and uses
CO2 as source of carbon nutrient rich soil. Describe in detail the nutritional and physical
requirements for this organism to grow, listing and explaining at least five
characteristics. - Answer-Does not use O2 - anaerobe
pH 10/lives in hot springs - alkalinophile
Lives in hot springs - thermophile
Green in color - photoautotroph/photoheterotroph
uses CO2 (inorganic) form of carbon - autotroph/phototroph
/.Active Transport - Answer-uses ATP to transport things into the cell against the
concentration gradient
/.Aerobe - Answer-an organism that needs oxygen to grow and metabolize
/.aerobic metabolism - Answer-The cellular process in which oxygen is used to
metabolize glucose. Energy is produced in an efficient manner with minimal waste
products.
/.aerobic respiration - Answer-Series of reactions that converts glucose to CO2 and
allows the cell to recover significant amounts of energy - requires oxygen
/.Aerobic Respiration - Answer-the principal energy-yielding pathway in where the final
electron acceptor in the electron transport chain is oxygen (O2)
/.Aerotolerant anaerobe - Answer-don't use oxygen but have the mechanisms to break
down oxygen if it is present - they don't use oxygen in their metabolism
/.Anabolism - Answer-building things up
/.Anaerobe - Answer-doesn't possess the necessary enzymes to metabolize oxygen -
meaning they metabolize without oxygen
/.anaerobic metabolism - Answer-The cellular process in which glucose is metabolized
into energy without oxygen. Energy is produced in an inefficient manner with many
waste products.
/.anaerobic respiration - Answer-Utilizes glycolysis and the Kreb's cycle and the
respiratory chain but does not use oxygen as the final electron acceptor
, /.Anexic - Answer-tissues in the body that are microbe free - they are sterile
/.Antibiotics - Answer-substances produced by the natural metabolic processes of some
microorganisms that can inhibit or destroy other microorganisms; generally, ther term is
used for drugs targeting bacteria and not other types of microbes
/.antimicrobial chemotherapy - Answer-the use of drugs to control infection
/.antimicrobials (antibiotics) - Answer-all-inclusive term for any antimicrobial drug,
regardless of what type of microorganism it targets
/.Antioxidants - Answer-Their main role in the body is to quench free radicals that are
released from oxygen and you get antioxidants from your diet
/.Antisepsis - Answer-application of chemical agents (antiseptics) to exposed body
surfaces and surgical incisions to destroy or inhibit vegetative pathogens
/.Antisepsis - Answer-Removing pathogens from living tissue
/.aseptic technique - Answer-sterile methods that exclude all microbes
/.Aspesis - Answer-any practice that prevents the entry of infectious agents into sterile
tissues (prevents infection)
/.ATP (adenosine triphosphate) - Answer-Composed of a sugar ribose, nitrogenous
base adenine, and a chain of three phosphate groups bonded to it.
/.Autoclave - Answer-Piece of equipment used to sterilize articles by way of steam
under pressure and/or dry heat
/.Autotroph - Answer-An organism that gets its source of carbon from carbon dioxide an
iorganic carbon source - referred to as the "self feeder"; They are NOT nutritionally
dependent on other living things
/.Bacterialstatic - Answer-prevent bacteria from reproducing - inhibits growth
/.bactericide - Answer-chemical that destroys bacteria except for those at the endospore
stage
/.Biosynthesis - Answer-taking smaller molecules and building them into larger
molecules
/.Broad-spectrum (extended spectrum): - Answer-Antimicrobials effective against a wide
variety of microbial types—for example, a drug effective against both gram-positive and
gram-negative bacteria
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