You are studying the regulation of a group of genes and have determined that the full activation of transcription of these genes occurs when histone acetyl transferases have made post-translational modifications specifically to which one of the following amino acids?

TLS Online TPP Program

#Question id: 11211

#Unit 7. System Physiology – Animal

The following steps refer to various stages in transmission at a chemical synapse.

1. Neurotransmitter binds with receptors associated with the postsynaptic membrane.

2. Calcium ions rush into neuron's cytoplasm.

3. An action potential depolarizes the membrane of the presynaptic axon terminal.

4. The ligand-gated ion channels open.

5. The synaptic vesicles release neurotransmitter into the synaptic cleft.

Which sequence of events is correct?

TLS Online TPP Program

#Question id: 11709

#Unit 9. Diversity of Life Forms

Which process results in genetic recombination, but is separate from the process wherein the population size of Paramecium increases?

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#Question id: 12210

#Unit 7. System Physiology – Animal

Which of the following stimulates the secretion of parathyroid hormone (PTH)?

TLS Online TPP Program

#Question id: 32394

#Unit 1. Molecules and their Interaction Relevant to Biology

Example of Perkin condensation is conversion of 

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#Question id: 28266

#Unit 5. Developmental Biology

SAP in the egg jelly of, Strongylocentrotus purpuratus is called___