NOW: Photosynthesis & Respiration
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1 Cell Biology subunits so far: Cell Parts (rganelles) Review homework Diffusion Review lab Review homework NW: Photosynthesis & Respiration L: Construct models. SLE: Work collaboratively. Image: S. Freeman et al., Biological Science (0)
2 ld homework on interacting cells omework STEP A FEATURE F CELLS n loose-leaf paper, create INVLVED a chart like IN the TIS previous STEP one, but Muscle for the cells waste break down product food carbon dioxide (C ) leaving the body. and produce C. C diffuses out of the muscle cells into the blood. The blood carries C to the lungs. C diffuses out of the blood into the lungs. The lungs expel the C -rich air.
3 Lab & homework on diffusion () Look up (on the Internet) and briefly describe whether/how each of the following can get through cell membranes (a) Sodium ions (Na + ) (b) Glucose (a sugar) (c) Carbon dioxide (C, a gas) (d) emoglobin (a large protein) () Based on all of your answers to #, write a sentence that describes the permeability of cell membranes. Diagram:
4 Photosynthesis & Respiration Definitions (in words)? Associated with which organelles? Chemical bonds between atoms are made and broken. Image: S. Freeman et al., Biological Science (0)
5 Atoms, molecules, and bonds Chemical formula for photosynthesis: C + + light energy C + carbon dioxide water glucose oxygen =C= = Chemical structure of glucose: chemicalformula.org
6 Glucose C C C C C C= [front of room] 0
7 Photosynthesis Calypso Pho-to Pho-to-syn-the-sis Daylight come and the plants make food! Pho-to Pho-to-syn-the-sis Daylight come and the plants make food! Three carbons, four carbons, five carbons, six! (Daylight come and the plants make food.) That s what you get when C-- is fixed! (Daylight come and the plants make food.) Come Mr. Tally Man, tally up the glucose! (Daylight come and the plants make food.) Plants convert it into starch and into sucrose! (Daylight come and the plants make food.) Pho-to Pho-to-syn-the-sis Daylight come and the plants make food! Pho-to Pho-to-syn-the-sis Daylight come and the plants make food!
8 omework (due ct. ) () Chemical reactions involve changes in which atoms (C,, ) are bonded to which. Does photosynthesis include chemical reactions? ow do you know? () Building large molecules (like glucose) out of smaller ones usually requires the input of energy. Is that true of photosynthesis? If so, where does the energy come from? () In the chemical equation for photosynthesis, how many C,, and atoms are on the left side of the arrow? ow many of each are on the right side?
9 Next slides: printouts for a human model of a glucose molecule
10 C C C C C C= 0 You are C
11 [front of room] 0 C C C C C C= You are C
12 C C C C C C= 0 You are C
13 C C C C C C= 0 You are C
14 C C C C C C= 0 You are C
15 C C C C C C= 0 You are C
16 C C C C C C= 0 You are
17 [front of room] 0 C C C C C C= You are
18 C C C C C C= 0 You are
19 C C C C C C= 0 You are
20 C C C C C C= 0 You are
21 C C C C C C= 0 You are
22 C C C C C C= 0 You are
23 [front of room] 0 C C C C C C= You are
24 C C C C C C= 0 You are
25 C C C C C C= 0 You are
26 C C C C C C= 0 You are
27 C C C C C C= 0 You are
28 C C C C C C= 0 You are
29 [front of room] 0 C C C C C C= You are
30 C C C C C C= 0 You are
31 C C C C C C= 0 You are 0
32 C C C C C C= 0 You are
33 C C C C C C= 0 You are
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