Biology 1002B Lecture Notes - Lecture 1: Chlamydomonas, Simple Eye In Invertebrates, Chloroplast

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Lecture 1
Chlamydomonas is a haploid single cell eukaryote, it can move around
with its flagella
- Has mitochondria, chloroplast, nucleus
- Way bigger than a bacteria
Eukaryotic cell is much bigger than prokaryotic cell
What makes chlamydomonas a “model system”?
It uses light in two different ways
- Use light as a source of energy, to drive metabolic reaction
- Use light to sense environment like eye
- It is easy to grow
- Chlamy is a model system because it can do Mixotrophic growth
- Chlamy as a model system because it has chloroplast and
mitochondria, and Chlamy’s mitochondria functions the same as the
one in animal cell
Eyespot is in the chloroplast but has nothing to do with photosynthesis
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Document Summary

Lecture 1: chlamydomonas is a haploid single cell eukaryote, it can move around with its flagella. Use light as a source of energy, to drive metabolic reaction. Use light to sense environment like eye. Chlamy is a model system because it can do mixotrophic growth. In the nucleus, nuclear genome (what ppl take about most of the time) Mitochondrial genome: photoautotrophs, means photosynthetic organisms, arabidopsis is the model plant, synechsystis is a prokaryotic cell, it is a bacteria with no nucleus, but it is photos(cid:455)(cid:374)theti(cid:272). The easiest approach is to find an organism in which the trait is not (cid:449)orki(cid:374)g, a(cid:374)d look at the differe(cid:374)(cid:272)e (cid:271)et(cid:449)ee(cid:374) the (cid:862)(cid:373)uta(cid:374)t(cid:863) a(cid:374)d the (cid:862)(cid:374)or(cid:373)al(cid:863). 2: a mutated gene is a change in the double stranded sequence comparing to wild type. It would take forever for you to find a mutated cell in the wild: so its better just make our own mutants, make a population of mutants and look at the difference.

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