Which is the only amino acid that does not have a resonance isomer (i.e. enantiomer with L and D forms)

The substrate for the committed step in glycolysis is:

Enzyme X has a Km for substrate A which is twice as large as its Km for substrate B.  If the enzyme is added to a solution containing equal, but low concentrations of A and B, and Vmax for A and B are equal: (Remember – the lower the Km, the higher the affinity)

The genetic code is said to be redundant or degenerate. This means that:

Which enzyme is responsible for replicating the ends of chromosomes?

Please correctly match the characteristics with the different DNA forms.

A research is interested in potential mutations of the gene that codes for the enzyme helicase. Which phase of the cell cycle would the research be focused on?

What statement describes the central dogma of molecular biology?

Please correctly match the characteristics with the different DNA forms.

We discussed several case studies of mutation disorders. This is a very rare disorder caused by a point mutation that activates a deletion of nearly 50 amino acids of the lamin A protein found in the nuclear membrane. The syndrome affects children by causing an 8-10x accelerated rate of aging. The average lifespan is only about 13 years with an overall effect of cachexia, hair loss, osteoporosis, cardiovascular disease, and other aging-related conditions.