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TLS Online TPP Program

#Question id: 409

For the following reaction,DG'° = +29.7 kJ/mol. L-Malate + NAD+ -> oxaloacetate + NADH + H+ The reaction as written:

#XL - S Microbiology

  1. can never occur in a cell.

  2. can occur in a cell only if it is coupled to another reaction for which DG'°is positive.

  3. can occur only in a cell in which NADH is converted to NAD+ by electron transport.

  4. may occur in cells at some concentrations of substrate and product.

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TLS Online TPP Program

#Question id: 15253

#XL - S Microbiology

The water activity in foods that have high levels of salt or sugar is
TLS Online TPP Program

#Question id: 15254

#XL - S Microbiology

For growth, most bacteria require water activity levels above
TLS Online TPP Program

#Question id: 15255

#XL - S Microbiology

Small organic molecules that usually make up all or part of enzyme cofactors and only very small amounts sustain growth
TLS Online TPP Program

#Question id: 15256

#XL - S Microbiology

A low molecular weight molecules that are able to complex with ferric iron and supply it to the cell
TLS Online TPP Program

#Question id: 15257

#XL - S Microbiology

complex media often are needed because the nutritional requirements of a particular microorganism are
TLS Online TPP Program

#Question id: 15258

#XL - S Microbiology

Complex media contain components like