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TLS Online TPP Program

#Question id: 11494

How do aquaporins allow the passage of H2O but not H3O+?

#Unit 2. Cellular Organization
  1. aquaporin interrupts this process by forming covalent bonds from the side chain NH2 groups of two highly conserved Asn residues to a water molecule that is centrally located in the pore.
  2. aquaporin interrupts this process by forming hydrogen bonds from the side chain NH2 groups of two highly conserved Asp residues to a water molecule that is centrally located in the pore.
  3. aquaporin interrupts this process by forming hydrogen bonds from the side chain NH2 groups of two highly conserved Asn residues to a water molecule that is centrally located in the pore.
  4. aquaporin interrupts this process by forming hydrogen bonds from the side chain COO- groups of two highly conserved Asn residues to a water molecule that is centrally located in the pore.
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TLS Online TPP Program

#Question id: 18602

#Unit 13. Methods in Biology

Suppose a unbiased die is thrown 72 times and getting a 4 on a throw is termed as success then find the variance of number of success ?
TLS Online TPP Program

#Question id: 18603

#Unit 13. Methods in Biology

If a fair die is rolled 4 times, then what is the probability that there are exactly 2 sixes ?
TLS Online TPP Program

#Question id: 18604

#Unit 13. Methods in Biology

A student takes a quiz consisting of 5 multiple choice questions. Each question has 4 possible answers. If a student is guessing the answer at random and answer to different are independent, then the probability of atleast one correct answer is
TLS Online TPP Program

#Question id: 18605

#Unit 13. Methods in Biology

Thermal modulation are used in PCR for the functions of
TLS Online TPP Program

#Question id: 18606

#Unit 13. Methods in Biology

In the PCR denaturation temperature calculated by using the
TLS Online TPP Program

#Question id: 18607

#Unit 13. Methods in Biology

The PCR consists of three defined sets of times and temperatures, termed steps
a) Denaturation at 94°C, for 0.5 min
b) Primer annealing at 55°C for 1.5 min
c) Extension at 72°C for 1 min
d) only denaturation and extension