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Biology CP-Mr.Willets
Cell Energy- Ps Answer these questions as assigned
1) Define photosynthesis __________________________________________________________
____________________________________________________________________________
2) What name is given to any organism that makes its own food?_________________________ What name is given to all other organisms? ________________________________
3) Most organisms that make their own food use what method?_______________________________
4) What is the most common food molecule? _____________________ All food molecules are what kind of molecule?_______________________________
5) If an organism is able to fix carbon, it can take inorganic compounds and make
_____________________ compounds (which we call ______________)
6) What process releases energy from food molecules? _________________________ When this process occurs, we often say that we are ______________ our food.
7) Respiration and photosynthesis are _________________________ processes because what one makes, the other uses and vice versa.
8) Regardless of whether an organism makes food (autotroph) or easts food (heterotroph), they all ________ food to release _____________
9) What molecule is used to store and transfer energy in both Ps and respiration? ___________
10) The most obvious difference between ATP and ADP is that ATP has ________________________ while ADP has only _______
11) Energy is stored in ATP by taking ADP and adding a _________________________
12) Energy is released from ATP by ______________________ the third ___________________
13) Fill in the blanks in the equation that shows both storing and releasing energy from ADP/ATP.
14) Fill in the blanks in the general equation for Ps
15) In what cell structure does Ps occur?__________________________
16) What pigment is able to capture light energy for Ps? _______________________ What color is this pigment?________________ What other pigments help?_______________________ and ______________________ What colors are they? ___________________ and _______________
17) Which pigments last longer when the temperatures drop? ________________________________
18) What name is give to the first part of Ps? _____________________________
19) During the light phase, what molecule captures the energy from light? _______________________ This causes an electron to become _______________ (which means it has extra ______________)
The electron then moves from molecule to molecule releasing its energy. This is known as the electron ________________ chain. Some of this energy is used to________________ water. When this happens, the ___________ from the water is released into the environment. The __________________ from the water is stored by attaching it to ____________________. This molecule is related to the vitamin ________________ The rest of this energy is stored in what molecule for use later? ________________
20) What name is given to the second part of Ps? __________________________ This part uses what molecules from the air? ______________________ This part uses what two things from the light phase? _______________ and ______________
21) What 3 carbon molecule is made by the synthetic phase? _________________ Most of these are used to make what? ____________________
22) Identify what each of the letters in the diagram below stands for.
A)___________ B)_____________ C)______________ D)______________ E)____________
F)___________ G)______________ H)_____________
23) What did Calvin use to discover what was happening during Ps? ____________________________
24) What compounds do plants need to make amino acids from PGAL? _________________ and ______________________ Most plants get these from the ________________ We add these to the soil when we use ___________________________ Although this is often called plant "food", it is not food because these compounds are _____________________ In what unusual way do some plants get the nitrates and phosphates that they need? __________________________ Give an example of a plant that does this_______________________________
25) What is another process (other than Ps) that makes food? ___________________________ Where does the energy come from for this process? ________________________ Some _______________ use this method especially the ones that live near volcanic _____________ on the ocean bottom.
26) What color light is the worst for Ps? _____________ This color is not __________________ by chlorophyll but is _____________________ which explains why chlorophyll is ____________
27) Photosynthesis helps us in three ways- a) it makes ____________ b) it releases ______________
into the air c) some of the oxygen released becomes __________________ which protects us from_________________________ radiation.