BIOL108 Lecture Notes - Lecture 1: Blood Sugar, Water Potential, Negative Feedback

• School: University of Alberta
• Department: Biology (Biological Sciences)
• Course: BIOL108
• Professor: Richard Moses

Document Summary

All forms of life go through different stages hence development. Amphibian = two lives growth controlled by dna and nutrition. Many prokaryotes and protists cannot move on their own accord, not a general characteristic of life. One major type of response to environment is regulation. Regulation (maintains homeostasis): thermal regulation (negative feedback system), osmotic pressure, blood sugar level, water potential of blood: constant internal environment, changing external environment, negative feedback system. E(cid:448)olutio(cid:374) does(cid:374)"t take pla(cid:272)e (cid:449)ithi(cid:374) a(cid:374) i(cid:374)di(cid:448)iduals lifeti(cid:373)e. it o(cid:272)(cid:272)u(cid:396)s i(cid:374) ge(cid:374)e(cid:396)atio(cid:374)s. adaptio(cid:374) to environment through changes in dna. Having evolved advantageous characteristics to survive and reproduce in their environment. Viruses: re(cid:395)ui(cid:396)e a(cid:272)(cid:272)ess to a(cid:374)othe(cid:396) o(cid:396)ga(cid:374)is(cid:373)"s ge(cid:374)eti(cid:272) i(cid:374)fo(cid:396)(cid:373)ation to carry out metabolic activities and replicate, we"ll (cid:272)o(cid:374)side(cid:396) the(cid:373) (cid:374)o(cid:374)-living, but they can evolve. Each level has unique emergent properties due to interactions between components. The cell is the fundamental unit of life: smallest level capable of life, all life composed of cells (general characteristics of life)