Answer:
Voluntary actions involve conscious thought and thinking time. Reflex actions do not involve conscious thought (thinking time) and happen very quickly to avoid unnecessary damage to the body.
Explanation:
Answer:
Explanation:
Which of the four types of macromolecules, and in which proportions, are present in this food sample?
Anwser
<span>Enzymes act as catalysts that remain unmodified as they increase the rate of a chemical reaction</span>
When there is not enough oxygen for cells to use cellular respiration<span />
The Pathway
• air enters the nostrils
•passes through the nasopharynx
•the oral pharynx
•through the glottis
• into the trachea
• into the right and left bronchi, with branches and rebranches into
• bronchioles each of which terminates in a cluster
• alveoli
