Biology 2601A/B Study Guide - Final Guide: Unit, Thermodynamics, Ribulose

• School: Western University
• Department: Biology
• Course: Biology 2601A/B
• Professor: Danielle A Way

Document Summary

Temperature: a measure of the speed or intensity of the incessant random motions at the atomic scale. Ectotherms: rely on external temperature to determine body temperature. Heterotherms: have more than one set temperature point or switch between homeotherm and poikilotherm. Regional endo/homeothermy: let some parts of the body be at different temps. Relationship between a body temp and metabolism in ectotherms: Ho(cid:449) (cid:373)u(cid:272)h does a p(cid:396)o(cid:272)ess (cid:272)ha(cid:374)ge o(cid:448)e(cid:396) a spa(cid:272)e of (cid:1005)(cid:1004)(cid:859)c. Q10 around 2-3 for most biological functions (without compensation in ectotherms) Temp determines motion, more interactions of atoms = more reactions. Km= amount of substrate needed to reach 50% of vmax. Low km = high binding enzyme substrate affinity. High km = low binding enzyme substrate affinity. Affinity too high: enzymes binds to tightly to substrate (too cold) Affi(cid:374)it(cid:455) too lo(cid:449): e(cid:374)z(cid:455)(cid:373)es do(cid:374)(cid:859)t hold o(cid:374) to su(cid:271)st(cid:396)ate effe(cid:272)ti(cid:448)el(cid:455) (cid:894)too hot(cid:895)