Pseudomonas sp. has a mass doubling time of 2.4 h when grown on acetate. The saturation constant using this substrate is 1.3 g/l (which is unusually high), and cell yield on acetate is 0.46 g cell/g acetate. If we operate a chemostat on a feed stream containing 38 g/l acetate, find the Maximum dilution rate?

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#Question id: 4935

#SCPH06 I Botany

Which gas was least abundant in Earthʹs early atmosphere, prior to 2 billion years ago?

#Question id: 4935

#SCPH28 | Zoology

Which gas was least abundant in Earthʹs early atmosphere, prior to 2 billion years ago?

#Question id: 4940

#SCPH06 I Botany

In their laboratory simulations of the early Earth, Miller and Urey observed the abiotic synthesis of

#Question id: 4940

#SCPH28 | Zoology

In their laboratory simulations of the early Earth, Miller and Urey observed the abiotic synthesis of

#Question id: 4941

#SCPH06 I Botany

Which of the factors below weaken the hypothesis of abiotic synthesis of organic monomers in early Earthʹs atmosphere?

1.  the relatively short time between intense meteor bombardment and appearance of the first life forms

2.  the lack of experimental evidence that organic monomers can form by abiotic synthesis

3.  Uncertainty about which gases comprised early Earthʹs atmosphere

#Question id: 4941

#SCPH28 | Zoology

Which of the factors below weaken the hypothesis of abiotic synthesis of organic monomers in early Earthʹs atmosphere?

1.  the relatively short time between intense meteor bombardment and appearance of the first life forms

2.  the lack of experimental evidence that organic monomers can form by abiotic synthesis

3.  Uncertainty about which gases comprised early Earthʹs atmosphere