Answer:
The first step in the Scientific Method is to make objective observations. These observations are based on specific events that have already happened and can be verified by others as true or false. Step 2. Form a hypothesis.
Explanation:
The hypothesis is an educated guess as to what will happen during your experiment. The hypothesis is often written using the words "IF" and "THEN." For example, "If I do not study, then I will fail the test." The "if' and "then" statements reflect your independent and dependent variables
<span>The muscle is a soft tissue found in most animals. The cells in the
muscle contain protein that produces a contraction that changes both the length
and shape of the cell. They are responsible for the movement it produces in the
human body. There are three types of muscle cell: skeletal, cardiac and smooth
muscle. Cardiac muscle contains excess amounts of mitochondria and myoglobin. The
myoglobin is responsible for the red color of the muscle. The answer is letter
B.</span>
We can confirm that one classification often used to describe the gas exchange that occurs in the alveoli-capillary membrane is external respiration.
<h3>What is external respiration?</h3>
This is a term used to describe the gas exchange that occurs in the alveoli-capillary membrane, where oxygen is received and carbon dioxide is released from the body. On the other hand, internal respiration is when the oxygen reaches the organs and tissues and another exchange of gasses takes place.
Therefore, we can confirm that one classification often used to describe the gas exchange that occurs in the alveoli-capillary membrane is external respiration.
To learn more about respiration visit:
brainly.com/question/1439976?referrer=searchResults
<span>In an enzyme controlled reaction, a substrate is the same as a reactant.
Reactant is a substance that will be used (there will be reduced) in reaction. Substrate will bind with enzyme and undergo a chemical reaction, so it will be used to make the product. Catalyst is helping reaction but not used, thus it's not a reactant. </span>