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The following are steps involved in signal transmission, presented randomly. 1) Chemically regulated ion channels on the presynaptic membrane are activated 2) Calcium ions enter the axon terminal 3) An action potential depolarizes the axon terminal at the presynaptic membrane 4) Acetylcholine is released from storage vesicles by exocytosis 5) Acetylcholine binds to receptors on the postsynaptic membrane Which of the following is the correct sequence of events?

Mannitol Salt Agar (MSA) plates can help distinguish between Staphylococcus aureus and Staphylococcus epidermidis by the utilization of mannitol and a pH indicator. What is the term used for a medium used to allow some microbes on a plate to be distinguished from others?

A species that has massive effects on an ecosystem but in proportion to its abundance is a ___________________.

Below are 2 strands of DNA. The bottom strand is a template strand, and the top strand is a daughter strand being synthesized by DNA polymerase in the direction shown by the arrow. Identify the letters that represent the 3’ ends of the double stranded DNA.    

Identify the theory that was supported by Aristotle.

Questions 1 to 10 relate to material covered in BIO6013 (Genetics & Molecular Biology)

Identify one mechanism that regulates gene expression at the level of translation.

In Southern blotting, we use a probe and a target molecule to screen DNA for particular sequences. Which of the following describes the relationship between the probe and the target?

Term for the uptake of extracellular DNA into a bacterial cell and incorporation into its genome.

The bacterial cell wall ______.