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MICR 221 TEST QUESTIONS WITH REVISED ANSWERS

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MICR 221 TEST QUESTIONS WITH REVISED ANSWERS what happens in the investment phase - Answer-ATP used to phosphorylate sugar 6C sugar ring broken into two 3C chains What happens in the payoff phase - Answer-oxidations and removal of phosphate produced ATP and NADH Net Products of glycolysi...

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  • August 29, 2024
  • 5
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • micr 221
  • micr 221 test questions with revised answers
  • what happens in the investment phase

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  • MICR 221
  • MICR 221

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MICR 221 TEST QUESTIONS WITH
REVISED ANSWERS
what happens in the investment phase - Answer-ATP used to phosphorylate sugar
6C sugar ring broken into two 3C chains

What happens in the payoff phase - Answer-oxidations and removal of phosphate
produced ATP and NADH

Net Products of glycolysis - Answer-2 pyruvate
2 ATP
2 NADH

products from pyruvate dehydrogenase - Answer-1 NADH

products of 1 full cycle of TCA - Answer-3 NADH
1 GTP (converted to 1 ATP)
1 FADH2 (gives less ATP)

Total products - Answer-1 x glycolysis, 2 x PDH, 2 x TCA =
10 NADH, 2 FADH, 2 ATP, 2 GTP

two major routes of ATP production - Answer-substrate level phosphorylation (SLP)
Oxidative phosphorylation (OXPHOS)

Key features of all electron transport chains (4) - Answer-1) a membrane
2) membrane bound oxidative protein complexes
3) cofactors
4) membrane bound reductive protein complexes

morphology - Answer-arrangement of cells

aerobes electron acceptor - Answer-oxygen

anaerobes electron acceptor - Answer-exogenous

fermentation electron acceptor - Answer-endogenous (within the cell)

Archea - Answer-bacteria which grows in harsh environments

autotrophs - Answer-utilises only inorganic carbon in the form of carbon dioxide

, heterotrophs - Answer-utilise organic carbon (proteins, carbohydrates and lipids)

macronutrients - Answer-CHONSP
carbon
hydrogen
oxygen
nitrogen
sulphur
phosphorus

transport media - Answer-maintain viability of organism without cell division
contains only buffers and salts

enriched media - Answer-contains general nutrient supplements to provide precursor
metabolites

enrichment media - Answer-encourages growth of particular organism

selective media - Answer-encourages growth of some organisms by inhibiting the
growth of others

Differential media - Answer-visually distinguish between organisms

blood agar - Answer-alpha haemolysis- green discolouration
beta haemolysis- completely clear zone
gama haemolysis- no homolysis

continuous culture - Answer-held in exponential stage of growth

Primary metabolites - Answer-essential for growth of microbe
produced during logarithmic phase/exponential

secondary metabolites - Answer-not essential for growth
accumulate during stationary phase

Aerobic environment and aerobes environment - Answer-high oxygen (atmospheric,
21% O2)
oxic environment

Microaerobic environment and microaerophiles environment - Answer-trace oxygen (2-
10% O2 or less)
hypoxic environments

Anaerobic envirnment and anaerobes environment - Answer-strictly 0% O2
anoxic Environment

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