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TLS Online TPP Program

#Question id: 4573

Which of the following pieces of evidence most strongly supports the common origin of all life on Earth?

#XL - S Microbiology

  1. All organisms require energy.

  2. All organisms use essentially the same genetic code.

  3. All organisms reproduce.

  4. All organisms show heritable variation.

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TLS Online TPP Program

#Question id: 190

#XL - T Zoology

Ca++ or Mg++ are most likely to be part of ________, while Zn++ or Fe++ are present in ________.
TLS Online TPP Program

#Question id: 191

#XL - T Zoology

The role of zinc in the mechanisms of carbonic anhydrase is to
TLS Online TPP Program

#Question id: 192

#XL - T Zoology

What is the role of the magnesium ion in kinases that require the magnesium-ATP complex to donate phosphoryl groups?
TLS Online TPP Program

#Question id: 193

#XL - T Zoology

An ion commonly found in metalloenzymes and which can undergo reversible oxidation and reduction is
TLS Online TPP Program

#Question id: 194

#XL - T Zoology

Which does not return to its original form after each catalysis?
TLS Online TPP Program

#Question id: 195

#XL - T Zoology

Vitamin C is a vitamin but not a coenzyme because it