Pulse rate During the practical while at rest the pulse is at a normal speed as the person is not doing any activity which requires lots of energy. This changes when the person starts to exercise as the line on the graph increases‚ this shows that the pulse rate is increasing because the heart is beating faster to make sure enough oxygen reaches the cells‚ this also causes the breathing to increase as the body has to take in more oxygen to supply the body and remove the carbon dioxide. In the body
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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 energy for the substrates to move at a fast rate‚ hence decreased the number of collisions with the enzymes. However
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ECONOMIC VIEWPOINT: DOES ABORTION LOWER CRIME RATE? By: Robert J. Barro This article reviews various reasons for lower crime rates in the United States since 1991. There were many explanations offered such as better cops‚ strong economy‚ restrictions on crack cocaine. Of all the explanations offered‚ legalizing abortions was very interesting and unpredictable among them. It clearly had the evidence that legalization led to increase in number of abortions in 1973 resulting in drop of crimes in 1991
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of the samples were set up accordingly‚ we blanked the spectrophotometer‚ and added the DPIP to the sample right before‚ inverting the sample and taking a reading at the Zero time mark‚ and placing the sample in the designated light apparatus‚ Sample 1 was wrapped in aluminum foil to keep it in the dark‚ Sample 2 was placed 24 cm from a light source‚ Sample 3 was placed 30 cm from a light source‚ Sample 4 was placed 49 cm from a light source‚ and the Blank was left out to be exposed to the light in
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spectrophotometer at 605nm‚ and the rate of linear decrease in absorbance over time represents the number of electrons flowing through the electron transport chain reflecting the relative rate of photosynthesis. Chloroplasts only absorb certain wavelengths in the electromagnetic spectrum‚ the blue followed by the red are the two main wavelengths absorbed (Melis‚ et al.‚ 1987). The experiment was designed to investigate which wavelengths would result in the highest rate of photosynthesis. Chlorophyll a
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were going to be most active at the 41ᵒC which is close to human body temperature. When we compare the enzyme in the low temperatures to the enzymes in the higher temperature we observed that the enzymes were functioning at a significantly reduced rate at the 24ᵒC temperature and was completely inactive at the 0ᵒC temperature. Whereas when we compare to the higher temperatures (60ᵒC) the enzymes should have functioned with reduced efficiency and should have even denatured which would
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How does Stevenson use the concept of duality in his Jekyll and Hyde novella? In my essay I will conduct a detailed analysis‚ on how he displays a concept of duality that Dr.jeykll and Mr.Hyde battle in a conflict of good and evil in the vast double psychological character‚ also how the suspense will attract the reader with mindboggling suspense. This key element is vital in keeping the reader hocked to the novella. Robert Louis Stevenson incorporated the ideology of duality in the book as a main
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1.a. Increase pressure from the thoracic cavity onto the venae cavae causes the stroke volume to decreases‚ cardiac output would decrease‚ venous blood pressure would eventually increase and venous return would also eventually increase. b. Fainting is due to a drop in blood flow to the brain. And holding your breath causes the heart rate to slow and blood vessels to dilate‚ which then leads to blood pools in the lower body and less blood going up to the brain. c. Compensatory mechanism that become
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societies are separated by geographical distance and time they still have a similar sense of what is funny. In his plays Plautus employs irony‚ asides‚ and physical humor to create comedic moments. Plautus was able to create humorous scenes through the use of both situational and dramatic irony. The audience being aware of what is truly happening allows for them to find the
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Enzymes lower the amount of energy needed in a chemical reaction. This happens because enzymes are catalysts‚ so they speed up the activation rates that occur in living organisms. Without enzymes‚ it would be difficult to break down particles like food in the digestion system. Enzymes are all very specific to what chemical reactions they will work with‚ and the temperature‚ pH‚ and salt concentration have to be a specific levels in order for the enzyme to function. The structure of each enzyme has
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