Question: How do different salinities affect a seeds ability to germinate? 2 pt Hypothesis: I hypothesize that the seeds in a lower salinity will germinate more. 2 points Prediction: If seeds are place in a bag with a lower salinity, then they are going to germinate more than those in a higher salinity solution. 2 points Materials: • • 60 red kidney beans solutions of 0.0% salt (tap water), 0.20% salt, 0.6.0% salt, 1.0% salt, 1.5% salt 5 paper napkins New package • • 5 plastic baggies with holes cut in them for
Less germinated in the presence of 1% ammonium nitrate compared to the spores not in the presence of ammonium nitrate. In other studies done, when ammonium is used to provide the nitrogen source for photosynthetic spores, they will not grow or germinate properly, and may show abnormalities and inhibited growth (Melan & Whittier, 1990). That is exactly what our experimental data showed us. After preforming the tests and compiling all the replicate data, we found that in the control group there was an average of 50.5 germinated spores per plate. In the plates containing 1% ammonium nitrate there was an average germination rate of 28.5 spores per plate.
Dip the strip in the milk, Wait five seconds, Record Data 6. Now add a few drops of each acid or base to each cup 7. Dip a new glucose a strip and record your data 8. Add a few drops of enzyme to each cup 9. Use a new glucose strip and record Data: Conclusion: According to my data, pH levels do, in fact, affect the results of Lactex.
Due to the lack of nutrients this diet provides and such low calorie intake, this diet can be used for no more than 6 weeks, with a 3 week break in between. Now that we have discussed where these two diets began, let’s discuss the diet plans. HCG and Slim-Fast have two very different diet plans. Slim-Fast offers shakes, snack packages, and meal bars while, The HCG diet consists of a hormone called Human Chorionic Gonadotropin. This hormone is something that already exists in men and women, but it is increased in pregnant women and is said to speed up your metabolism.
The Effects of Temperature on the Swimming Behavior of Daphnia Introduction: Plankton play a large role in the ecosystem. Plankton are aquatic organisms that exist in innumerable different regions of aquatic environments. They can be utilized as a food source for other planktons, large aquatic animals, and other animals. Since they are at the pedestal of the food chain, they are important since they fill the base of the ecosystems they exist in. Many zooplanktons are also ectothermic which means temperature can highly affect metabolism and growth (Jalal et al., 2013).
After 2 days on the leaf where vaseline was applied on both sides there had been barely any water loss (according to all 3 tables) but there had been quite a great loss in water at the leaf where the bottom was covered which was different to my predictions (2 out of 3 tables show this and Ranjita’s table supports my hypothesis because their leaf with V on bottom only lost 26%) but this may just be these particular leaves that do not have that many stomata. To conclude from my results there are more stomata at the bottom but there is quite a significant number at the top too. However the Singapore Science Center states that “more stomata are usually found on bottom of leaves” which would mean that if my results had been a bit more accurate then the bottom side covered with vaseline would have prevented most of the water escaping which means the weight change should not have been great. We can now see that the results could easily be wrong or just a special case. If the leaves were to be kept longer for observation then the leaf with vaseline at the bottom would have died shortly too.
Xylem tissue is non-living tissue. * Phloem carries glucose to tissues where it is stored or used in respiration * * * * * * * * * * Movement of Substances in Xylem and Phloem * Current theory explaining upward water movement in xylem involves passive process of cohesion, transpiration pull, tension and adhesion * The source-to-sink model explains active transport or translocation of sugar in phloem * Regulating Water and waste products * Water regulation is essential because: * The water in cells containing substances needed for chemical reactions. Too much or too little water changes the concentration of these substances * Too much or too little water will change the rate at which substances move in and out of cells * Metabolic processes produce waste. These wastes are toxic to cells and must be removed * Wastes include carbon dioxide (Produced during cellular respiration) and ammonia) produced from the breakdown of excess protein). Ammonia is very toxic and need to be removed quickly.
Exercise 10: Acid-Base Balance: Activity 3: Renal Responses to Respiratory Acidosis and Respiratory Alkalosis Lab Report Pre-lab Quiz Results You have not completed the Pre-lab Quiz. 07/18/13 page 1 Experiment Results Predict Question: Predict Question 1: What effect do you think lowering the PCO2 will have on [H+ ] and [HCO3- ] in the urine? Your answer : d. [H+ ] will decrease and [HCO3- ] will increase. Predict Question 2: What effect do you think raising the PCO2 will have on [H+ ] and [HCO3- ] in the urine? Your answer : c. [H+ ] will increase and [HCO3- ] will decrease.
AP Biology November 3, 2011 Lab 1: Diffusion and Osmosis Objectives: * Measure the water potential of a substance in a controlled experiment. * Determine the osmotic concentration of living tissue or an unknown solution from experimental data * Describe the effects of water gain or loss in animal and plant cells * Release osmotic potential to solute concentration and water potential Introduction: Diffusion is the process that allows particles or molecules to move from an area of high concentration to an area of low concentration. This process accounts for the movement of many small molecules across cell membranes. The rate of diffusion of particles will be affected by the steepness of the concentration gradient or the difference in concentration between two areas. Diffusion can only occur across a membrane if there is a concentration gradient and the membrane is passable.
They have begun to make small improvements, reducing their sugar levels by a percentage at best. Companies that market to children fear any recommendation coming form the Federal Trade Commission because even though the Federal Trade Commission is not a law enacting body, the adverse effects of not adhering to recommendations they make is strongly discouraged. According to General Mills’ website, the since 2007 until 2011 the company had their cereals sugar content from 13% to 10% depending on the cereal, a drop of two to three percentage points. This is interesting because the recommended serving size for their nutritional label is 3/4 cup, which is not a lot of cereal when measured. Kids consume one to two cups or more which double the content of sugar consumption.