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TLS Online TPP Program

#Question id: 806

A single-stranded DNA molecule contains 40 nucleotides with equal amounts of A, C, G, and T. This DNA strand can combine with a complementary DNA strand to form a double-stranded DNA molecule. Which characteristic does this double-stranded molecule have when it forms a B-DNA structure?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. The two strands will have parallel orientation and identical sequences.

  2. The helix will be right-handed with 12 base-pairs per turn.

  3. Every base-pair will contain one purine and one pyrimidine.

  4. There are both covalent and non-covalent bonds between the two chains.

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TLS Online TPP Program

#Question id: 33364

#Unit 1. Molecules and their Interaction Relevant to Biology

An antibody binds to an antigen with a Kd of 5 X10-8 M. At what concentration of antigen will θ be 0.5
TLS Online TPP Program

#Question id: 7271

#Unit 5. Developmental Biology

In drosophila, Head formation required higher Bicoid concentrations than thorax formation, because
TLS Online TPP Program

#Question id: 19187

#Unit 13. Methods in Biology

Choose the correct statement with regard to quantitative PCR?
TLS Online TPP Program

#Question id: 356

#Unit 1. Molecules and their Interaction Relevant to Biology

How does 0.5 M sucrose (molecular mass 342) solution compare to 0.5 M glucose (molecular mass 180) solution?
TLS Online TPP Program

#Question id: 24552

#Unit 9. Diversity of Life Forms

the sequence divergence of genome are carried out by  more accumulating mutagens in which position of codon?