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mcb final
Question | Answer |
---|---|
all of the chemical reactions of the cell are called? | metbolism |
the breakdown of peptidoglycan to N-acetylmuramic acid, N-acetylglucosamine and peptides is an example of? | catabolism |
enzymes are? | proteins that function as catalysts |
formation of peptide bonds between amino acids to build a polypeptide would be called? | anabolism |
an apoenzyme | containd the active site |
a holoenzyme is a cobination of a protein and one or more substances called | cofactors |
important components of coenzymes are | vitamins |
enzymes that function at boiling water temps. or other harsh conditions would be termed? | extremozymes |
enzymes that are produced only when substrate is present are termed | induced enxymes |
enzymes that catalyze removing electrons from one substrate and adding to another are called | oxidoreductases |
when enzyme action stops due to build up of end product this control is called | negative feedback |
most electron carriers are | coenzymes |
exergonic reactions | occur during aerobic cellular respiration |
in the cell energy released by electrons is often used to phosphorylate | ADP |
in addition to electrons, which of the following is also involoved in electron transfer | hydrogen protons |
The most likely place where an exoenzyme participates in a chemical reaction is? | outside the cell |
all of the following are exoenzymes except | ATP synthase |
all of the following pertain to glycolysis, except it: | degrades glucose to co2 and h2o |
the formation of citric acid from oxaloaxetic acis and an acetyk group begins | kerbs cycle |
the step involving ATP , hexokinase, and the phosphorylstion of glucose to glucose-6-phosphate is: | an example of substrate-level phosphorylation |
during aerobic cellular respiration, the final electron acceptor is | oxygen |
which of the following is not involved in the step that occurs btwn glycolysis and TCA cycle? | pyruvic acid accepts electrons from NADH |
in bacteria cells, the electron transport system is located in the : | cell membrane |
in which pathway is the most NADH generated? | Krebs cycle |
the reactions of fermentation function to produce ____molecules for the use of glycolysis | NAD |
during which of the phases of cellular respiration is the majority of of ATP formed | electron transport |
in bacterial cells which glucose is completely oxidized by all the pathways of aerobic cellular respiration how many ATP are generated | 38 ATP |
when Glucose is broken down by glycolysis durimg bacterial fermentation how many ATP are generated | 2 ATP |
Each NADH that enters the electrom transport system gives rise to ____ATP | 3 ATP |
as the electron transport carries shuttle electrons, they actively pump____into the outer membrane compartment setting up a concentration gradient called he proton motive force | hydrogen ions |
mixed acid fermentation | produces acids plus co2 and h2 gases |
anaerobic cellular respiration | untilizes an electron transport system |
each FADH2 that enters the electron transport system gives rise to ___ ATP | 2 |
in Anaerobic respiration all of the following can serve as the final electron acceptor , except: | oxygen |
enteric bacteria commonly occupy the human intestine and primarily produce | CO2 and H2 gases |
the process of alcoholic fermentation produces | alcohol and carbon dioxide |
cyanide will cause rapid death in human because it: | blocks cytochrome c oxidase |
why is cyanide harless to some bacteria | they lack cytochrome C oxidase |
fatty acids can be metabolized by entering | the TCA cycle |
enzymes that are regularly found in a cell are termed | constitutive enzymes |
when amino acids are deaminated , they can be used as a source of | glucose |
in eukaryotes, glycolysis takes place in the? | in the cytoplasm |
in eukaryotes the Krebs cycle takes place in the | in the mitochondia |
photosynthesis is responsible for producing >50% of earths oxygen. during photosynthesis inorganic ___ is fixed into organic compunds like ___without the help of sunlight | CO2, C6H12O6 |
in the eukaryote , the repiratory chain is located in the___whereas the majority of ATP is produced by the repiratory chain in thr ____of a prokaryote | mitochondria, outer membrane space |