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TLS Online TPP Program

#Question id: 67

When a region of DNA must be repaired by removing and replacing some of the nucleotides, what ensures that the new nucleotides are in the correct sequence?

#Biochemistry

  1. DNA cannot be repaired and this explains why mutations occur.

  2. The new nucleotides base pair accurately with those on the complementary strand.

  3. The repair enzyme recognizes the removed nucleotide and brings in an identical one to replace it.

  4. The three-dimensional structure determines the order of nucleotides.

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TLS Online TPP Program

#Question id: 3432

#Zoology

Which of the following statements is (are) true of fixed action patterns?
TLS Online TPP Program

#Question id: 3433

#Zoology

Which of the following is true about imprinting?
TLS Online TPP Program

#Question id: 3434

#Zoology

type of learning that can occur only during a brief period of early life and results in a behavior that is difficult to modify through later experiences is called
TLS Online TPP Program

#Question id: 30

#Biochemistry

Amongst the following chemical elements that are essential to organisms, which of the following set of elements have an atomic number above that of selenium?
TLS Online TPP Program

#Question id: 31

#Biochemistry

Which of the following is the pair of enantiomers from the following substance? 
TLS Online TPP Program

#Question id: 32

#Biochemistry

 Humans maintain a nearly constant level of hemoglobin by continually synthesizing and degrading it. This is an example of a(n):