DNA helicases "unzip" the DNA molecule in preparation for replication; they break the hydrogen bonds between the two annealed nucleotide bases.
There is to image we can't help you with that question.
Nerve poisons, or nerve gases are organic chemicals that interfere with the mechanism by which nerves transfer messages to organs. The interference is as a result of the blocking of acetylcholinesterase, and enzyme that catalyzes the breakdown of acetycholine, a neurotransmitter. Therefore, a poison that blocks acetylcholine receptors on dendrites may reduce or decrease the binding of acetycholine to its receptors on the postsynaptic membrane.
Answer:
Pressure with Height: pressure decreases with increasing altitude. The pressure at any level in the atmosphere may be interpreted as the total weight of the air above a unit area at any elevation. At higher elevations, there are fewer air molecules above a given surface than a similar surface at lower levels.In addition, gravity is weaker at the equator due to centrifugal forces produced by the planet's rotation. It's also weaker at higher altitudes, further from Earth's centre, such as at the summit of Mount Everest
Answer:
Muscle cells can continue to produce ATP when oxygen runs low using lactic acid fermentation. However, this often results in muscle fatigue and pain. Many yeast uses alcoholic fermentation to produce ethanol.
