Answer: Pulmonary aortic valve
Explanation:
Homeostasis it is an organism's ability to keep a constant internal environment.
Domain is the highest ranking of organisms in taxonomy.
The correct option is b.
<h3>What do you mean by domain?</h3>
Domain is the highest ranking of the biological system.
In the system there are three domains
This is the highest classification, after this further classification of living organism is done.
Thus, the correct option is B
Learn more about domain
brainly.com/question/1634690
The correct option is D. Organisms work best at their optimum temperature and pH, above and below these temperature they will not be able to function as expected. It is possible that the students above use different temperature and pH when they were carrying out their experiments, this will result in different efficiency rate by the yeasts.
The statement, Denaturation of dna is a necessary step in southern blotting procedure because it separates double stranded dna into single stranded dna, is true.
