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TLS Online TPP Program

#Question id: 10140

Following are certain statements regarding activated and inactivated form of Rubisco, Which one is INCORRECT?

#Unit 6. System Physiology – Plant
  1. The naturally occurring inhibitor 2-carboxyarabinitol 1-phosphate prevent activation of Rubisco
  2. plant rubisco active site contains His, Asp, Glu and Lys 201 , is a carbamoylated Lys 201 side chain with a bound Mg 2+ ion and is absoluetly require for its activation
  3. The increase in both pH and concentration of Mg2+ facilitates the formation of the (E–NH 3 + – CO2 – • Mg2+) complex, which represents the catalytically active form of rubisco
  4. The tight binding of sugar phosphates, such as ribulose 1,5-bisphosphate (RuBP), either impedes the production of the E–carbamate adduct or blocks the binding of substrates to the carbamylated enzyme
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TLS Online TPP Program

#Question id: 3753

#Unit 3. Fundamental Processes

Cytosine makes up 42% of the nucleotides in a sample of DNA from an organism. Approximately what percentage of the nucleotides in this sample will be thymine?
TLS Online TPP Program

#Question id: 28070

#Unit 6. System Physiology – Plant

Water splitting/ oxygen evolution is initiated by presence of 
a. P680*
b. P680
c. P680+
TLS Online TPP Program

#Question id: 16105

#Unit 7. System Physiology – Animal

Which of the following is a human thermoregulatory response controlled by cholinergic sympathetic nerves?
TLS Online TPP Program

#Question id: 10572

#Unit 10. Ecological Principles

In 2005, the United States had a population of approximately 295,000,000 people. If the birth rate was 13 births for every 1,000 people, approximately how many births occurred in the United States in 2005?
TLS Online TPP Program

#Question id: 566

#Unit 1. Molecules and their Interaction Relevant to Biology

The role of the metal ion (Mg2+) in catalysis by enolase is to