Photosynthesis Results

The purpose of this lab is to observe the effect of white, green, and dark light on a photosynthetic plant using a volumeter and followed by the calculation of the net oxygen production using different wavelengths color of white and green light, and also the calculation of oxygen consumption under a dark environment, and finally the calculation of the gross oxygen production.

In addition to completing my undergraduate and graduate education, I was participating in cellular and molecular research conducted by Professors at CUNY-Brooklyn College. I have worked with Graduate Deputy of Biology Department studying gene(s) that are involved in the fusion process of Chlamydomonas reinhardtii, a single celled green algae. Currently, I have the pleasure to work as a research assistant with Dr. Juergen Polle, a leading expert in microalgae biotechnology. Our research focuses on photosynthesis, secondary carotenoid biosynthesis, and biofuels production of various microalgae. These experiences remind me of the reason why I have a great appreciation and love for science. And that is precisely what my ideal biology class would look like; a place where concept are learned through research. From preforming experiments and critiquing the scientific work of others to attending seminars, students should experience it all.

The teacher first poses a question to the students, such as ‘How do we study cellular structures?’, activating the engagement stage of the bscs learning model. Once the topic has been broached, the teacher will

Photosynthesis is a vital process that requires to utilize energy for plants. This experiment was done to evaluate the effects of carbon availability on photosynthetic activity. The aquatic plant Elodea densa was placed into sodium bicarbonate solutions of five concentrations ranging from 0.1% to 1.0%, in five independent trials (excluding the negative control treatment of water). The temperature and light intensity was constant. The results indicated a directly proportional relationship between the availability of carbon dioxide and the rate of photosynthesis of Elodea Densa, as photosynthesis continued to increase with increasing amounts of bicarbonate. The most O2 amount of oxygen produced was with the 0.7% NaHCO3 concentration and least with the control of water. The null hypothesis that stated carbon concentration does not affect rate of photosynthesis of the aquatic plant was rejected. The predicted hypothesis that an increase in bicarbonate concentrations results in an increase in the photosynthetic rate was accepted. In conclusion, there is a significant increase in photosynthetic activity as the concentration of NaHCO3 increases.

Abstract: The purpose of this lab is to separate and identify pigments and other molecules within plant cells by a process called chromatography. We will also be measuring the rate of photosynthesis in isolated chloroplasts. Beta carotene, the most abundant carotene in plants, is carried along near the solvent front because it is very soluble in the solvent being used and because it forms no hydrogen bonds with cellulose. Xanthophyll is found further from the solvent font because it is less soluble in the solvent and has been slowed down by hydrogen bonding to the cellulose. Chlorophylls contain oxygen and nitrogen and are bound more tightly to the paper than the other pigments.

This course was easily relatable to my AP bio course I took my senior year of high school, and my biology lab that I took this fall semester my freshman year. The lab and the lecture went hand in hand which helped me academically learn more. I noticed that by taking these two courses together it helps me learn more and better understand the material that I need to study/ know. All my knowledge of this course I mainly learned my senior year of high school through AP biology, although this course really emphasized my essential understanding of the course and went into more depth of the criteria that I needed to better know. I have acquired new ways of seeing, being, and thinking of this course because of the way it’s gone about. By being in this

The purpose of the Cellular Respiration lab was to identify if cellular respiration is sped up due to exercise. To conduct the experiment each student filled a beaker with 15 ml of water and three drops of bromothymol blue. Next each student blew into the beaker through a straw until the water mix turns yellow. When carbon dioxide is added too bromothymol blue it changes to a yellow color. Each student times how long it takes for the water to turn yellow, records the data, and then reset the lab. Subsequently the student would exercise for a total of five minutes and then repeating the lab, again recording how long it takes for the water mix to turn yellow.

act upon the data and reassess. After reassessing, student academic progress is shown to them as growth

The first day showed how well the class worked together to follow the directions. While looking over the new safety procedure for this lab, I realized that I had already broken a rule by bringing a drink into class. I had to end up throwing it away before I could begin the lab. Throughout the class Mr. Monk showed us where everything was located. After finishing the lab, I remembered how to use a microscope. It was fun finding the different organisms on each of the slides. As a class we went through three different types of organisms. We learned how to tell the difference between organisms by seeing how much life each one had.

This course has been an eye-opening experience in more than one way. My favorite part of Science 1123.02 was the set-up of the class. I loved that our class was able to learn a little bit about everything. Instead of digger deep into a few subjects, we were able to expand our knowledge on multiple subjects. I believe being well rounded helped develop myself as a teacher. I am now comfortable with multiple subjects. Throughout Science 1123.02 I was able to expand my knowledge of various subjects such as the cell, mitosis and meiosis, plants, animals, human organ systems, and hormones.

Fourth, I learned about microbes growing and how they grow. In lesson 5, I learned about all life on earth form a single table. One the first page lesson one starts we label some creeks lakes and geysers. We also, learn what percentage of yellowstone is in Montana Wyoming and Idaho. After that in lesson 1 we learn how many things are in

My hypothesis was correct. To measure the amount of carbon dioxide or CO2 in an exhaled breath, you need to use BTB solution and sodium hydroxide. In our procedure, the BTB reacted to the carbon dioxide and the sodium hydroxide reverses the reaction which allowed us to measure how much carbon dioxide is in our exhaled breath. As seen in the data, it took 5 drops of sodium hydroxide to get the BTB solution that had carbon dioxide blew into it to be the same color of the controlled BTB solution.

Photosynthesis is essential to all living organism such as animals and plants. Photosynthesis is a process used by plants and other autotrophs to capture light energy and use it to power chemical reaction that converts carbon dioxide and water into oxygen, carbohydrates and water. (Textbook: Principles of Biology). The reactants and the products of photosynthesis are:

Photosynthesis is a vital process that autotrophs use to transfer light energy into chemical energy. Photosynthesis ultimately produces O2 and glucose. It, like many other biological processes, can be affected by environmental variables. The variable that we altered in the following experiment are intensity, light wavelengths, and pigment types. In order to do this, we conducted three experiments. In the first experiment, we examined the effect of light intensity by placing vials with chloroplasts with DPIP at different light distances in which the results varied. Initially, 30cm away was the most effective for photosynthesis. Then 24cm appeared to be the most effective. Followed by 49cm at minutes 25 and 30. In the second experiment, we

This lab was called photosynthesis: understanding photosynthesis. It is a highly complex process that needs to be broken down in many steps to understand how it works. This lab covers the big components in photosynthesis including carbon dioxide intake, light consumption, and varying pigmentation.