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TLS Online TPP Program

#Question id: 2684

In DNA tertiary structure, what is a histone octamer?

#Unit 2. Cellular Organization

  1. A complex consisting of eight positively charged histone proteins (two of each H2A, H2B, H3 and H4) that aid in the packaging of DNA

  2. A complex consisting of eight negatively charged histone proteins (two of each H2A, H2B, H3 and H4) that aid in the packaging of DNA

  3. A complex consisting of nine positively charged histone proteins (H1 and two of each H2A, H2B, H3 and H4) that aid in the packaging of DNA.

  4. A complex consisting of nine negatively charged histone proteins (H1 and two of each H2A, H2B, H3 and H4) that aid in the packaging of DNA.

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TLS Online TPP Program

#Question id: 18919

#Unit 13. Methods in Biology

What are REP1 and REP2 genes in the plasmid used for?
TLS Online TPP Program

#Question id: 23766

#Unit 7. System Physiology – Animal

The sensory receptors for vision are:
TLS Online TPP Program

#Question id: 9279

#Unit 6. System Physiology – Plant

During the normal functioning of the photosynthetic system, the chemical reactions in which water is oxidized to oxygen, NADP+ is reduced to NADPH, and ATP is formed almost all the reactions up to NADP+ reduction take place in
TLS Online TPP Program

#Question id: 11433

#Unit 1. Molecules and their Interaction Relevant to Biology

An amino acid contains no ionizable group in its side chain (R). It is titrated from pH 0 to 14. Which of the following ionizable state is not observed during the entire titration in the pH range 0 - 14?
TLS Online TPP Program

#Question id: 523

#Unit 1. Molecules and their Interaction Relevant to Biology

Compared to pyruvate, the carbon atoms in lactate ________.