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TLS Online TPP Program

#Question id: 2684

In DNA tertiary structure, what is a histone octamer?

#SCPH05 I Biotechnology

  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: 4129

#SCPH06 I Botany

Which of the following statements about the tRNA that normally accepts phenylalanine is false?  (mRNA codons for phenylalanine are UUU and UUC.)
TLS Online TPP Program

#Question id: 97

#SCPH05 I Biotechnology

Which is a difference between maltose and cellobiose?
TLS Online TPP Program

#Question id: 19630

#SCPH05 I Biotechnology

Which of the following is the weakest base?
TLS Online TPP Program

#Question id: 14137

#SCPH05 I Biotechnology

Consider the following alignment of two DNA sequences:
                            AGTAAC
                            AA_ _AC

Assuming an affine gap scoring scheme of an identity matrix for substitution, a gap initiation penalty of 1 and a gap extension penalty of 0.1, the score of the alignment is _________
TLS Online TPP Program

#Question id: 15697

#SCPH05 I Biotechnology

Which of the following does not describe PAM matrices?