Answer:
The trachea, bronchi, and bronchioles are involved in conduction. Gas exchange takes place only in the lungs. Lung tissue consists mainly of tiny air sacs called alveoli, which is where gas exchange takes place between air in the alveoli and the blood in capillaries surrounding them.
yeah go for D correct response to my point of knowledge
When a species is at this level of risk, we say that they are <em>endangered</em>. =)
Answer:
Maintaining homeostasis at each level is key to maintaining the body's overall function.
Explanation:
The body maintains homeostasis for many factors in addition to temperature. For instance, the concentration of various ions in your blood must be kept steady, along with pH and and the concentration of glucose.
Answer:
Proteins with seven conserved "helicase domains" play essential roles in all aspects of nucleic acid metabolism. ...
Explanation:
Known or putative helicases are required for general transcription initiation and for transcription-coupled DNA repair, and may play important roles in elongation, termination, and transcript stability.
