Microbial growth: a) refers to the increase in the size of a microbial cell. b)
ID: 81858 • Letter: M
Question
Microbial growth: a) refers to the increase in the size of a microbial cell. b) refers to the increase in the frequency of cell division. c) in a single generation time leads to double the cell size. d) refers to the increase in number of organisms in a bacterial population. A strictly fermentative bacterium generates ATPs A) by glycolsis only. B) by aerobic respiration only. C) by fermentation or aerobic respiration. D) only in the absence of oxygen. E) only in the presence of oxygen. Which of the following is TRUE about this reaction? A) This process requires O_2. B) This process occurs an aerobically. C) This process requires the electron transport system. D) This process requires light. E) This process requires O_2 and the electron transport system. A bacterial culture grown in a glucose-peptide medium causes the pH to increase. The bacteria are most likely A) fermenting the glucose. B) oxidizing the glucose. C) degrading the peptides and ammo acids. D) not growing. During replication is synthesized by. a) RNA, DMA polymerase b) DMA, DNA polymerase C) RNA, ribosomes d) RNA, RNA polymerase In transcription, RNA polymerase uses as a template to synthesize. a) RNA, proteins b) RNA. DNA C) DNA, RNA d) DNA, proteinsExplanation / Answer
1) D) refers to the increase in the number of organisms in a bacterial population.
2) A) by glycolysis only
3) A) this requires O2.
NO3- + CH2O + H+ -> ½ N2O + CO2 + 1½ H2O
4) C) degrading the peptides and amino acids
5) B) DNA is synthesised by DNA polymerase
Replication is the synthesis of DNA , using DNA polymerase, as given by central dogma, transcription is synthesis of mRNA and translation is synthesis of proteins.
6) C) DNA and RNA