Biology 212 Final questions with
complete solutions graded A+
2025/2026
What is phloem? - correct answer ✔✔vascular system that allows all-way transport of a solution
that includes nutrients, hormones, etc.
located on bottom or outside of xylem
Vmax - correct answer ✔✔Substrate concentration is high enough to allow the enzyme to bind
it as quickly as it can turn it into product. Substrate concentration above this level does not
increase reaction rate
What substrate concentration do you use to test an enzyme of unknown concentration? -
correct answer ✔✔where Vmax begins
Vmax def - correct answer ✔✔measure of enzyme activity. Units: product made/unit time
Km def - correct answer ✔✔measure of how much substrate is required for half Vmax. Units: a
concentration
Ectotherm - correct answer ✔✔Ectotherms are temperature conformers. Use behavior to
control body temp, not metabolic processes. Use little fuel during inactivity.
Endothermy - correct answer ✔✔Endotherms are temp regulators. Use metabolic processes to
control internal temp. Use energy at rest. Metabolic rate 10x higher than ectotherm and can do
10x more work.
complete solutions graded A+
2025/2026
What is phloem? - correct answer ✔✔vascular system that allows all-way transport of a solution
that includes nutrients, hormones, etc.
located on bottom or outside of xylem
Vmax - correct answer ✔✔Substrate concentration is high enough to allow the enzyme to bind
it as quickly as it can turn it into product. Substrate concentration above this level does not
increase reaction rate
What substrate concentration do you use to test an enzyme of unknown concentration? -
correct answer ✔✔where Vmax begins
Vmax def - correct answer ✔✔measure of enzyme activity. Units: product made/unit time
Km def - correct answer ✔✔measure of how much substrate is required for half Vmax. Units: a
concentration
Ectotherm - correct answer ✔✔Ectotherms are temperature conformers. Use behavior to
control body temp, not metabolic processes. Use little fuel during inactivity.
Endothermy - correct answer ✔✔Endotherms are temp regulators. Use metabolic processes to
control internal temp. Use energy at rest. Metabolic rate 10x higher than ectotherm and can do
10x more work.
