In pcr, it is important to use taq dna polymerase, as opposed to other dna polymerases. this is because taq is capable of synthesizing dna AFTER EXPOSURE TO 94° C.
Taq polymerase is a thermostable DNA polymerase. This means that it can withstand high temperature and is ideal in synthesizing DNA during PCR.
Taq polymerase under certain temperatures
1) optimum temperature for activity<span> is 75–80 °C,
2) with a </span>half-life<span> of greater than 2 hours at 92.5 °C,
3) 40 minutes at 95 °C and 9 minutes at 97.5 °C,
4) can replicate a 1000 </span>base pair<span> strand of DNA in less than 10 seconds at 72 °C</span>
Answer:
Dopamine, like caffeine, increases the heart rate of Daphnia in a dose-dependent manner. Dopamine's effects on Daphnia's heart has not been reported previously. ... Caffeine showed a similar effect on Daphnia's heart rate at a 10-times lower concentration than dopamine (28.5% increase at 0.08 mg/ml, Figure 2).
Explanation:
It is important to question a family member, if present, while caring for an elderly victim because it´s needed to know if the signs that the person has correspond to previous injuries or to any condition that the victim may have, and probably, a relative can respond with better precision and give more details about them.
A control group is sort of the normal group. The group you aren't changing or messing with. It is to show what the species/experiment acts like on its own in response to something without you having to change it at all.
With an experimental group, you are changing something about the subject before putting it in the conditions it will need to respond to.
I don't entirely understand, but I know the control group is constant, unchanging. It sort of helps with distinguishing things. I have examples of experiments if that will help you understand what a control group is to answer the question. I also have a The Death Cure example if you have seen or read the book. I hope you do not fail this assignment, but even if I did not answer with an answer you were looking for, it could have helped you answer the question on your own.
I saw somewhere a similar question, though I was given the answer choices. If this is the answer you are looking for: variable(s).
Control groups don't use variables because you aren't changing them.
The correct answer is B. It has made tetanus a rare disease in the United States. As with other vaccination programs, Tetanus vaccine has had a high success rate in preventing the disease among vaccinated people. Reinforcing the value of vaccines in preventing serious disease.
