The pcr (polymerase chain reaction) protocol that is currently used in laboratories was facilitated by the discovery of a bacterium called thermus aquaticus in a hot spring inside yellowstone national park, in wyoming. this organism contains a heat-stable form of dna polymerase known as taq polymerase, which continues to function even after it has been heated to 95oc. why would such a heat-stable polymerase be beneficial in pcr
a) each cycle includes a "hot" denaturation phase (95°c), which separates the hydrogen bonds that hold the strands of the template dna together.
b) each cycle includes a "hot" denaturation phase (95°c), which serves to sterilize the culture.
c)each cycle includes a "hot" denaturation phase (95°c), which activates the taq polymerase.
d)each cycle includes a "hot" saturation phase (95°c), which allows the primers to anneal to the target dna.
e)more than one of the above are correct.

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?

Me with biology endocrine system crossword also image left i need with hw

Hurry i need your (100 points) 1) what are the responsibilities of the region of the brain highlighted below? (picture located below) the highlighted portion is at the rear base of the brain, behind the brain stem. regulating homeostasis, hunger and eating, thirst and drinking, and many other functions of basic survival. coordinating movement and balance by using information from sensory nerves, including hand-eye coordination. controlling voluntary body movements, processing information from sense organs, thoughts, and learning abilities. regulating important involuntary bodily functions such as blood pressure, heart rate, breathing, and swallowing. 2)which of the following systems or structures is correctly paired with its function? neurons - brain cells that control thoughts, calculations, and memory cerebral cortex - portion of the brain that controls involuntary body movement peripheral nervous system - carries impulses to and from the central nervous system central nervous system - carries information from the nerves to the muscles and glands