Cellular respiration

Respiration and Excretion In this lab we tested to see if respiration was a form of excretion. We were testing for the excretion of salt and water. When testing for the excretion of water, we placed a test strip in our palms/hands and closed them to a fist for 1-2 minutes. We then took a blue test strip of silver nitrate and placed it into a zip lock bag for our control. We would also take to additional blue strips and place one into a zip lock bag and begin respiration process of exhaling…

iii) Light intensity, cm-2 Formula of light intensity = (1/distance2) = cm-2 Eg : for 10cm = 1/((10.00cm)²) = 1/(100 cm²) =0.0100 cm-2 Distance of leaf discs from the light source (±0.05) cm Light intensity (cm-2) 10.00 0.0100 15.00 0.0044 20.00 0.0025 25.00 0.0016 30.00 0.0011 35.00 0.0008 Table 6: The table shows the…

Adenosine Triphosphate (ATP) is the body’s main source of chemical energy. It is produced by breaking down nutrients such as glucose, fatty acids and proteins, which are all found in food. At the start of the race, anaerobic pathways are used to provide a quick source of energy. Most of this energy is derived from the catabolism of fats. Since lipids are more reduced than carbohydrates, they are capable of storing more energy per unit weight. Triacylglycerols are the lipids used for energy…

Renae Hallinan is an elite netballer, playing for the Adelaide Thunderbirds in the ANZ Championship League and the Australian Diamonds in the World Championships. Renae is required to work at a fast pace with an extremely high level of skill, as considerable demands are placed upon her anaerobic energy systems, with aerobic fitness assisting in her recovery between bursts of play. Netball games consist of four 15 minute quarters. There is a 3 minute break between the first and second quarter and…

Introduction: Investigating the effects of light intensity, NH4CL, and DCMU on the rate of electron transport in spinach thylakoid membranes was the purpose of this lab. Photosynthesis is the process that routinely drives electron transport across the thylakoid membrane but can be impacted when additional factors are added. Two phases known as the light reactions and the Calvin cycle makeup photosynthesis. Plastoquinone shuttle, water oxidation, and NADP+ reduction are the major factors of the…

The process of carbohydrate absorption after consuming food happens in a variety of pathways within the body. The first step to absorption is the process of digestion. This process begins in the mouth. Here, the enzyme a-amylase breaks down the food through the saliva. The process then moves to the small intestine where the digestion products are then absorbed through the intestinal wall into the blood stream and then moved across to other body cells. This then forms glucose and the disaccharide…

Anaerobic and aerobic exercise were determined to effectively influence muscle oxygen uptake at the cellular level. Evaluating and measuring the effectiveness of the two types of exercise on oxygen uptake would inform the advantages and disadvantages they have on muscles. Significant amounts of oxygen are consumed by the human muscles when moderate intensity aerobic work is performed. Contradictorily, anaerobic exercise causes the body to break down stored glycogen in muscles for energy.…

Ladies, hope we have moved on from the paradigm of “lifting weight will make me manly” thing. For those who are new to this reality and are taking this as a shocker, it’s NOT. I have been lifting heavy for the past six months. Anyways, sticking to what we are here to discuss. Creatine. Ask your gym instructor or dietician on what Creatine does, and I bet the response would be it retains water in muscle and make you look bulky OR it gives you bigger muscle OR (to make it more irritating) they…

The Effect of Light Intensity on the Rate of Photosynthesis of Elodea in the Aquarium Aim The aim of this experiment was to investigate the relation between the light intensity and photosynthesis rate of Elodea in an aquarium using a simulator. Background Photosynthesis is metabolic pathway in which plants use carbon dioxide and water to produce glucose by the aid of light energy from the sun. Light energy is usually absorbed by chlorophyll; a green pigment in plants. The equation of…

Fermentation is the process of anaerobic respiration of yeasts in the absent of oxygen. The enzymes in the yeast assist the breaking down of the glucose and released alcohol and carbon dioxide. The producing of carbon dioxide means fermentation is taking place. It can be affected by such as temperature and pH level. Some organisms use fermentation to produce ATP without oxygen. According to the graph above, the class results trend supported the hypothesis, as the yeast concentration…