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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: 3716

#Unit 3. Fundamental Processes

The e subunit of DNA polymerase III is responsible for its ________ activity.
TLS Online TPP Program

#Question id: 2575

#Unit 2. Cellular Organization

NMR studies of the pectin molecules indicate that, which one is not true for pectin ?
TLS Online TPP Program

#Question id: 7168

#Unit 5. Developmental Biology

Which one of the following signaling pathways will best support the mediolateral intercalation in the formation of the primitive streak in chick?
TLS Online TPP Program

#Question id: 7157

#Unit 5. Developmental Biology

When the blastema forms after amputation of a newt limb, what processes must the cells undergo in order for regeneration to occur?
TLS Online TPP Program

#Question id: 7753

#Unit 5. Developmental Biology

The best-studied type of plant autophagy, specialized organelles called autophagosomes enclose the cytoplasmic components and fuse with the vacuole, this is called