Which of the following ion uptake into the presynaptic terminal causes release of the neurotransmitter?

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#Question id: 2822

#Unit 2. Cellular Organization

Transposition by a bacterial insertion element

a. occurs at a frequency of approximately 1 in 10^3 cells per generation.

b. can inactivate an essential gene.    

c. is mediated through a RNA intermediate.

d. requires the enzyme transposase

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#Question id: 7268

#Unit 5. Developmental Biology

Match the columns and choose the correct option.

Column I	Column II
A.    Progress zone	i.                    thickening of the ectoderm at the apex of the developing limb bud
B.     Apical ectodermal ridge	ii.                  The cells found within the most posterior region
C.     Zone of polarizing activity	iii.                The highly proliferative mesenchyme that fuels limb bud growth

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#Question id: 4669

#Unit 3. Fundamental Processes

Instead of a TATA box, some eukaryotic genes contain an alternative promoter element called an initiator. Most naturally occurring initiator elements have

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#Question id: 7111

#Unit 5. Developmental Biology

Hox genes:

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#Question id: 12200

#Unit 6. System Physiology – Plant

Given some observation of the auxin signalling pathway, which one of the following are the incorrect prediction about signalling?