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TLS Online TPP Program

#Question id: 11120


The release of neurotransmitter at a chemical synapse in the central nervous system is dependent upon which of the following?

#Unit 7. System Physiology – Animal
  1. Synthesis of acetylcholinesterase
  2. Hyperpolarization of the synaptic terminal
  3. Opening of ligand-gated ion calcium channels
  4. Influx of calcium into the presynaptic terminal

Answer:- Option(s): 4


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TLS Online TPP Program

#Question id: 5816

#Unit 8. Inheritance Biology

Which of the following forms of DNA repair does NOT require DNA polymerase?

TLS Online TPP Program

#Question id: 5815

#Unit 8. Inheritance Biology

In the Ames test:

TLS Online TPP Program

#Question id: 5814

#Unit 8. Inheritance Biology

A bacterial cell experiences a mutation as a result of exposure to nitrogen mustard and then divides several times to produce a total of eight cells. How many of the resulting cells would you expect to contain the mutation?

TLS Online TPP Program

#Question id: 5813

#Unit 8. Inheritance Biology

Examples of environmental mutagens include:

TLS Online TPP Program

#Question id: 5812

#Unit 8. Inheritance Biology

In which situation would you expect the mutation frequency to increase over time?

TLS Online TPP Program

#Question id: 5811

#Unit 8. Inheritance Biology

In a haploid organism, lethal alleles would be expected to:

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