The diagram below represents some steps in a procedure used in the field of biotechnology. Enzymes
)
+
Gene for
human
insulin
Cut
bacterial
DNA
Inserted into
bacterial cell
Bacterial cell
This bacterial cell can now be used to produce
1. the bacterial gene for insulin that can be inserted into humans
2. human genes for enzymes that can be inserted into humans
3. insulin that can be used by humans
4. enzymes necessary to treat human diseases

[content deleted] - user123802726recklesschicken

meiosis is the correct answer

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.

air enters through the nose, moves through the nasal cavity, the pharynx, the larynx, enters the trachea, moves through the bronchi andbronchioles till the alveoli.