DNA is an identifier, I'm not exactly sure how to answer this.
Answer:
True
Explanation:
Barycenter is the center of mass of an object. Since the beginning all planets and sun have been revolving around their center of mass. This center of mass evidently is the center of the solar system . The satellite, planet and sun has been revolving and rotating in the counterclockwise around the barycenter as well as their axis
The herpes virus infects the humans to cause chickenpox disease. The virus during its stage of causing infection, it spreads through the epidermal cells by infecting them. This causes the typical rash on skin that is seen in chickenpox. The virus then enters that sensory nerves present on the ski and travels along the length of the neurons to the sensory dorsal-root ganglia adjacent to the spinal cord. Here the virus stays in an inactive stage.
- During the chymotrypsin reaction, both the protonated and unprotonated forms of histidine 57 occur.
- This is possible within the physiological pH range thanks to its pKa of 6.0.
<h3>Describe the role that histidine 57 plays in the chymotrypsin mechanism.</h3>
- General base catalysis and general acid catalysis are two of the processes that histidine accomplishes.
- As a general base, it takes a hydrogen from serine 195 in the first step.
- The amide group of the peptide bond that is breaking is given hydrogen in the next phase, which is an acid catalysis step.
- The second stage of the reaction is conducted according to a similar plan.
<h3>Role of nucleophilic catalysis in the chymotrypsin reaction mechanism:</h3>
- The nucleophile that attacks the substrate peptide bond in the first phase of the reaction is serine hydroxyl.
- Water is the nucleophile that attacks the intermediate acyl-enzyme in the second step.
To learn more about histidine visit:
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Answer: Population Density.
Explanation:
Population density, this is known as the number of people per unit of area, it is usually denoted with per square kilometre or square mile, population density can be calculated for a county, city, or plants as in this question.
Which tells us the population density of saguaro cactus plant to be 150 per square kilometres.
