please see the uploaded word file.

./ ~

~ . . ~ I wer energy wavelengths are more rapidly

extend over 30 mj rs , alth?ug~ the longer, 0

1 absorbed by water than blue-green light is . At

absorbed . Thisl'e ns red hght 1s more strol nglyl th visible light colors except blues. 30 m even cl~~ ter has absorbed near Y a e

' · . d r of oxygen under conditions of light and Last vyeek, ya\l ob erved the Pi otosynthetic p_ro u~ tn mine the photosynthetic production of dar}r."'This week , y~ get to design your expen~en o exa

• ox19en under specwc colored wavelengths of hght. . . . r ·t d t the storage of energy but also

Of course energy lism in autotrophs is not imi e O th · d respiration includes the use of ored energy. Referring back to the pho~osyn t~!

1 ~;_;roduct o2. The

equations* the anabolism of glucose uses CO2 and H20 and pro uces . the roduction and catabolism of glucose requires 0 2 and produces CO2 and H20. By observing P use ~~ese gasses, we can understand metabolic processes.

*photosynthesis: 6C02 + 6H20 + sunlight (energy) ➔ CsH120s + 602

cellular respiration: CsH120s + 602 ➔ 6C02 + 6H20 + ATP (energy)

Activity 1: Energy metabolism in seed germination: 1 . Your peas have been dried or desiccated this week . This process removes all water from

the peas, so you can assume that any changes in mass are due to the storage of energy or consumption of energy stores by the peas.

2. Collect your set of desiccated seeds from the class group at the front-they will be in the envelopes that you prepared and labeled last week.

3 . Place a clean weight boat onto the mass balance and zero it using the tare button. 4 . Carefully tap out your seeds and plant material from one treatment into the weigh boat and

record the mass in table 1 . 5 . Divide the total ending mass by 5 peas to calculate the approximate ending pass per pea. 6 . Replace the seeds into the envelope and place the clean weigh boat onto the mass balance

zeroing it using the tare button, add the desiccated plant material to the dish and record the ' mass in table 1.

7 . Repeat step 5 to mass the final treatment. 8. Fill out Table 2 and record rj ~ults from each lab table to the class data sheet.

Table 1: Lab rou 's Mass of e s ollowin ermination in different treatments Treatment Total ending desiccated Desiccated ending mass

mass of eas of eas/ 5 eas

Table 2: Lab orou1>'s actua rv mass o peas compared to predicted dr, mass Treatment Initial Mass at Room Predicted Dry Mass Actual Dry M

Humidity/ Pea (g) with_% Water Loss after desicca:~~ (g)

Id f

Light and \ b 7 "--" -t 0 .1 1 1 0.. b °' 0 v\ Water .., ,,,. ,

Light only \ -i 70 n6 \ · 1 t; ~ ~ 0 0\~ , "'I

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