Question

11 multiple choice 5 points when an enzyme is denatured, it’s ______ is changed.
order of amino acids
chemical composition
substrate
shape
12 multiple choice 5 points bears are able to hibernate all winter from eating food high in lipids. in which two ways does this help the bear?
quick energy and insulation
long term energy and insulation
long term energy and building muscle
quick energy and building muscle

Explanation:

Question 11

Enzymes are proteins, and denaturation involves the disruption of the protein's three - dimensional structure (like the active site). The order of amino acids (primary structure) is not changed during denaturation. The chemical composition of the enzyme (the types of atoms and molecules it's made of) remains the same. The substrate is the molecule the enzyme acts on, and denaturation doesn't change the substrate. So when an enzyme is denatured, its shape is changed.

Lipids are a good source of long - term energy storage (they have more energy per gram than carbohydrates or proteins). Also, lipids (like fat) provide insulation for the bear, helping it stay warm during hibernation. Carbohydrates are for quick energy, and proteins are for building muscle. So lipids help with long - term energy and insulation.

Answer:

D. shape (assuming the options are labeled A - D with A: order of amino acids, B: chemical composition, C: substrate, D: shape)

Question 12