The E. coli chromosome is a closed-circular DNA of length 4.6 million base pairs, which resides in a region of the cell called the:

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#Question id: 3880

#Unit 3. Fundamental Processes

Which one of the following properties of the L-19 IVS ribozyme is not shared with enzymes that are purely protein?

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#Question id: 7211

#Unit 5. Developmental Biology

Choose the correct match.

Germ layers specifying signals	Result
a.     If either Nodal or Vg1 signaling is blocked	i.               No ectoderm induction
b.     If vegT mRNA depleted	ii.              No endoderm induction
c.     If smad2 phosphorylation inhibited	iii.            No mesoderm induction
	iv.            Ectoderm only

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#Question id: 18939

#Unit 13. Methods in Biology

If a DNA sequence is present in higher than usual amounts in a sample can be analysed using pcr

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#Question id: 4378

#Unit 3. Fundamental Processes

This serves as the promoter for 70% of eukaryotic genes and typically serves as a control region for genes that are transcribed at relatively low rates.

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#Question id: 33423

#Unit 1. Molecules and their Interaction Relevant to Biology

Which enzyme catalyses this reaction