Two transesterification reactions takes place for 2 exon -1 intron configuration. Choose the correct  statement

a. First transesterification is always caused by exon 1 -3’OH

b. second transesterification is catalysed variably either by external G or branch point while .

c. First transesterification is catalysed variably either by external G or branch point while 

d. second transesterification is always caused by exon 1 -3’OH.

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#Question id: 12474

#Unit 10. Ecological Principles

The most common kind of dispersion in nature is

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#Question id: 15247

#Unit 5. Developmental Biology

In the syncytial blastoderm, nuclei in the anterior part of the cell are exposed to ------------- that are not present in the posterior part of the cell, and vice versa.

1. Cytoplasmic determinants

2. Maternal factors

3. Zygotic gene

4. Paracrine signals

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#Question id: 648

#Unit 1. Molecules and their Interaction Relevant to Biology

Enzyme catalysis is regulated by a number of mechanisms. Also, the flux through metabolic pathways must be regulated. Given the metabolic pathway below, which choice accurately describes the regulation of compound G levels?

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#Question id: 4179

#Unit 3. Fundamental Processes

What is the 5ʹ → 3ʹ anticodon for an amino acid with the codon CAG?

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#Question id: 28918

#Unit 4. Cell Communication and Cell Signaling

Which of the following statements is correct about Sonic hedgehog?