The Effects of Secondary Plant Compounds on Lumbriculus Variegatus Heart Rate Introduction Blackworms (Lumbriculus variegatus) were used in this experiment to study the effects of secondary plant compounds‚ chemical compounds produced by plants that are not part of the general metabolism‚ on pulse rate. Secondary plant compounds act as defense mechanisms which reduce or eliminate consumption of some plant species or even attract predators. These compounds are not essential to the plant but often
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think that more oxygen will be released from the Hydrogen Peroxide and Catalyse. We will be measuring the two main factors: - * Oxygen - the amount released from the Hydrogen peroxide * Time - The duration of the reaction The room temperature may be a factor that will affect our results.
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it tells a variety of different things. Each temperature attempt was done three times to be accurate. First of all‚ the hypothesis (the higher the temperature the faster the reaction will occur) has been proven correct and it proves the theory right. From the results‚ we can see this‚ as the iced water (10 degrees) had the slowest rate of reaction at 1.10 minutes. Then the room temperature water (19 degrees) was tested and had a slightly better rate of reaction at 1.09 minutes. Then last of all
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Jonald Atienza February 3‚ 2015 MT32-C11 C/M Ronel Almacen Finals Activity 2: Channeling Introduction On February 2‚ 2015‚ C/M Almacen discussed about channeling. He showed us the famous channel in the world the Istanbul‚ Turkey. He shared his experiences in navigating in this channel. He taught us the Traffic Separation Scheme (TSS). It has the north bound and south bound just like the road in land. Counter flowing is not allowed also in narrow channeling. When joining the Traffic
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Apple Inc. Examining The Heart of A Multinational Company Apple Inc. previously known as Apple Computer Inc. was founded in 1976. The American Multinational Corporation is known for dominating the technology industry with market savvy products. Apple’s success is attributed to the company’s ability to design and produce products with highly valued customer benefits and unique benefits for which customers pay premium prices. Although the company has a large presence in various segments of
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As the temperature increased‚ the enzyme activity also increased‚ however‚ only to an optimal level which was at temperature 32oC. Once the temperature was beyond the optimal level‚ the rate began to decline and this was represented by the concave curve on figure 5 and 7. This was because as the temperature increases‚ the frequency of collisions between the enzyme and the substrate also increased hence faster reaction rate. Whereas‚ the enzymes operated slowly at low temperature as there wasn’t sufficient
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neurogenic hearts. The myocardial cells need neural input from the cardiac ganglion to be able to beat whereas the myogenic hearts of vertebrates will beat without neural input. The neural input sets the resting heart rate and contractile force of the neurogenic heart. The heart rate of the neurogenic and myogenic hearts is regulated by neurotransmitters. Hearts in vertebrates are excited by epinephrine and serotonin although with varied effects and inhibited by acetylcholine. Invertebrates’ heart rates
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Aim: To observe the effect of temperature on the rate of the iodine clock reaction using ammonium persulfate Assessment criteria: Design Variables: Table 1.1: List of dependent and independent variables. S.No | Dependent variables | Independent variables | Controlled variables | 1. | Rate of reaction | Temperature | Concentration | 2. | - | - | Pressure | 3. | - | - | Volume | Hypothesis: The iodine
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Week 3 Activity Chapter 15: Choose the best answers in the following cases: 1. Which of the following is not a characteristic of living things? a. Living thing use energy b. Living things maintain themselves c. Living things have the capacity to reproduce d. Living things are part of populations that remain constant from one generation to the next 2. The macromolecules made from carefully folded strings of amino acids are a. Proteins b. Carbohydrates c. Lipids d. Nucleic acid 3. One
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THE EFFECT OF TEMPERATURE ON CATALASE ACTIVITY AIM The aim of this experiment is to find out the effect of temperature on catalase or hydrogen peroxide. This will enable us to tell at what temperature hydrogen peroxide is most efficient. This (degradation) reaction will help us determine some of the catalase’s different attributes. HYPOTHESIS In this experiment it would be safe to hypothesise that no activity would take place at 1 to 20 degrees. It would be probable that a little activity would
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