Hemoglobin is found in red blood cells and carries oxygen from your lungs to the rest of the body. Insulin is a hormone used to regulate blood sugar levels. Since hemoglobin and Insulin are made of chains of amino acids, they are examples of which type of organic molecule? A. Lipid
B. Protein
C. Carbohydrate
D. Nucleic acid

B

Explanation:

Proteins are made of chains of amino acids.

they both go up but then go back down. they both end lower than they started. lastly, they both are competitive/the second on.

explanation:

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.