Why is the Taq DNA polymerase well-suited for PCR?
What will be an ideal response?
Taq DNA polymerase is a heat-stable enzyme that was isolated from the bacterium Thermus aquaticus. It can maintain function and structure at very high temperatures, allowing the PCR to run without having to inject a new enzyme after each denaturation cycle.
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Which microbial grouping is the major oxygenic phototroph in most salt lakes?
A) cyanobacteria B) Dunaliella, a eukaryotic alga C) halophilic Archaea D) purple nonsulfur bacteria
Which of the following ciliates produces the disease ick in fish?
A. Nyctotherus B. Balantidium C. Ichthyophthirius D. Entodinium
Which of the following offers the best description of neural transmission across nearly all mammalian synaptic clefts?
A. Neural impulses involve the flow of K+ and Na+ across the cleft. B. Neural impulses travel across the gap as electrical currents. C. Neural impulses cause the release of chemicals that diffuse across the cleft. D. Neural impulses travel across the cleft in both directions. E. The calcium within the axons and dendrites of nerves adjacent to a synapse acts as the neurotransmitter.
Polar molecules cannot pass across a plasma membrane through the lipid bilayer because they are not soluble in lipids
Indicate whether the statement is true or false