Biology 1001A Lecture Notes - Lecture 1: Pyruvic Acid, Phosphorylation, Electrochemical Gradient
16 Sep 2017
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Chlamydomonas is a si(cid:374)gle (cid:272)ell, it has flagella, it"s a (cid:272)lassi(cid:272) eukar(cid:455)oti(cid:272) (cid:272)ell: has a nucleus, a chloroplast, mitochondria. It"s a (cid:373)odel s(cid:455)ste(cid:373) (cid:271)e(cid:272)ause it reflects basic eukaryotic structure: also because its small, you can grow lots of these cells, it grows very fast. Its si(cid:373)ple so it does(cid:374)"t ha(cid:448)e (cid:373)a(cid:374)(cid:455) parts. It cannot use light energy and converts it into chemical energy but it can use light as information: we can link light to the movement of its flagellum. It has an organelle called an eyespot: eyespot is located inside the chloroplast but it has nothing to do with photosynthesis but it is right up against the plasma membrane. Advantages of having a model system that is haploid. Phototaxis = moving towards light or away from the light. Simple is primitive, complex is a derived trait. The eyespot is more simple than the eye but it is not primitive than the eye.
