Title: Announcements
1Announcements
- Tomorrows recitation quiz NEJM 1
- iclickers mini-quiz academic honesty
- GATTACA ec Tonight 7pm C-106
- Order your primers oligos yet?
- Raise hand if you read pp185-189.
- Read because not just lecture here
2cytoplasm
outside cell
Based on the model of sucrose uptake shown, which
of the following treatments would increase the
rate of sucrose transport into the cell. a.
Decreasing extracellular sucrose
concentration. b. Decreasing extracellular pH c.
Decreasing cytoplasmic pH d. Adding an inhibitor
that blocks the creation of ATP. e. Adding a
substance that makes the membrane more permeable
to H
3Post- test
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9Leaves contain millions of chloroplasts.
Cell
Chloroplasts
Chloroplasts are highly structured, membrane-rich
organelles.
10Where do plants get their food...
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15Short Experiment Growing radishes from seed
16Biology Radish Problem
- Weighed out 3 batches of radish seeds (each 1.5
g). - Experimental treatments
- 1. Seeds not moistened (dry) placed in LIGHT
- 2. Seeds on moistened paper towels in LIGHT
- 3. Seeds on moistened paper towels in DARK
- After 1 week, all plant material was dried
weighed. - TASK Predict the (dried) biomass of the plant
material in the various treatments.
17Results Weight of Radish Seedlings
1.46 g 1.63 g 1.20 g
How do you explain the results? (Remember all
treatments started as 1.5g).
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25When Light Is Absorbed, Electrons Enter an
Excited State
26Time to capture photons (photosystem football)
27Question for Thursday How is this image relevant
to Digestion, Cell Biology, Respiration and PHS?
28ATP powers everything
29Peter Mitchell Diffusion is the answer!
30Paul Boyer I think it actually twists!
31Masasuke Yoshida Ummm check this out.