AP Biology Photosynthesis Lab Bethany Boyer Due 11/12/14 Lab Write-Up Questions First Experiment 1) The independent variable in this experiment was the presence of CO2 (carbon dioxide). The dependent variable was the speed at which the leaf disks started to float. 2) In the leaf tissue‚ the bicarbonate and light are combining to carry out photosynthesis. This will cause oxygen to collect in the leaf tissue‚ causing it to rise. 3) If we were to boil the leaf disks‚ the reaction would most likely
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purpose of this lab was to investigate whether veins affect photosynthesis rate. It was predicted that having veins would decrease the rate because chloroplast might be less frequent due to the vascular tissue. For this experiment‚ 4 groups were set up: veins and no veins in CO2 solution‚ and veins and no veins in distilled water‚ the distilled water groups served as controls. These 4 groups were placed under a light bulb in order for photosynthesis to occur. No disks experience movement in the first 7
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eastern end of town. On a typical night we have approximately 20 trains go through. For the purpose of this paper‚ trains heading east will not be included as they sound their whistle on the way out of town therefore causing less disruption. That leaves us with approximately 10 west - bound trains per night.
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Both photosynthesis and cellular respiration are the main pathways of energy transportation in organisms. However‚ the reactants and the products are exact opposites in photosynthesis and in cellular respiration. In photosynthesis‚ cells take in carbon dioxide (CO2) and water (H2O) by absorbing energy from the sun‚ and then the cells release oxygen (O2) and store glucose (C6H12O6). The formula of photosynthesis is: Light energy 6CO2+6H2O → C6H12O6+6O2
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Photosynthesis & Cellular Respiration Worksheet Name:__________________________________________Period:_______ Vocabulary: Match the phrases on the left with the term that best fits. Use answers only one time. ___J 1. Organisms that make their own food A. Chloroplasts ___A 2. Site of photosynthesis B. Aneorobic ___F 3.Process occurs in a mitochondrion C. Aerobic ___D 4.C6H12O6 D. Glucose ___B 5. Process does not require oxygen E. ATP ___C 6. Process requires oxygen
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ADI Lab investigation: Photosynthesis Introduction and goals: In our experiment we worked with photosynthesis‚ which is the process of light energy‚ CO2 and H2O being turned into food for the plant. CO2+H2O+ Light energy=C6H12O+O2 is the formula for photosynthesis. Our group hypothesis was trying to determine weather o2‚ water‚ or the nutrients of the soil determine the mass of the water. The guided question was “Where does the mass that makes up a plant come from?” Methods:
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President Obama stated that “we’re the only advanced country on Earth that doesn’t guarantee paid sick leave or paid maternity leave to our workers.” 2 What we call ‘paid leave’ is really medical and family leave insurance. It provides wages to those who take temporary leave to care for an ill family member‚ recover from their own health issues‚ or care for a newborn child. 7 America’s lack of paid leave is a serious problem‚ since our families‚ businesses‚ and economy could greatly benefit from it.
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Australia has to date not legislated for paid maternity leave‚ unlike most other countries. Assess who should take responsibility for paid maternity leave. Explain the reasons for your response. Paid maternity leave is defined as income replacement to compensate for the leave from paid employment necessary around child-birth (Baird‚ 2002a:2). In the developed world today‚ many western countries have designed a legislated for paid maternity leave such as Sweden‚ Germany‚ United Kingdom‚ New Zealand
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The United States is one of only three countries remaining that do not guarantee paid maternity leave to mothers. This becomes a problem not only for new mothers‚ but also creates a potentially stressful environment for both the newborn and the family. Unsubstantial and unpaid parental leave in the United States contributes to the gender pay gap‚ is damaging to new mothers‚ and contributes to the drop in birth rates amongst women in high paid positions. Many new families and especially
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women representation. There is no doubt that I personally found most of the topics incredibly interesting and mind changing however there is one topic in particular that opened up doors of multiple explanations of my past. The topic of paid family leave left such a memorable last impression because it deeply resonated with the struggles my family faced throughout my childhood. The insight of my parent’s struggles in the past‚ gave me the opportunity to critically think about current policies in addition
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