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12 Biology Gas Exchange - 1043 Words

logy12 Biology Demonstrate understanding of adaptation of animals to their way of life Gas exchange – Process in which gas is oxygen exchanged for carbon dioxide THE WORM The worm lives underneath the ground in moist rich humus soil. The worm is Terrestrial- which means it is related to earths or its inhabitants, and is not restricted to moist environments as the worms internal lungs keep it moist. As worms are nocturnal they only are active at night Which gives them less chance to be eaten by birds as birds hunt in the day time. This is an advantage as they will not dry out in the day time. In hot days in summer the worm burrows deeper to avoid drying out and dying. In wet days it is possible that the worm will be brought†¦show more content†¦As the water flows through the gills of the fish the lamellae gains oxygen in order for the fish to have efficient gas exchange. Because fish live in the water and not land it is impossible to breathe (inhale/exhale) that’s why they have gills as their main gas exchange organ, unlike mammals with lungs and worms with skin. Fish excrete in the sea which is important for the ecosystem. An advantage for fish is that the blood flows through the lamellae in the opposite direction to the water flow so their gas exchange process is not interrupted while gas is exhaled. There is also no dead space in the gills as most water that passes over the gills o2 is diffused into the fish blood. Fish have rich blood supply to gills and are highly vascularised. The fish have numerous folds to the gill structure which increases the surface area so efficient gas exchange. Mammal -Sheep Comparisons: a tracheal system in mammals would be too heavy as lungs would require large amounts of water to extract sufficient oxygen, both fish and worms have high vascularised blood vessels. Mammals, worms and fish breathe oxygen but in different ways e.g. skin, gills and lung. Fish, sheep and worms have large surface are to volume ratio to get efficient gas exchange. They all have different habits which make them favourable in their own species as worms can survive in soil unlike mammals and fish, fish can survive in water unlikeShow MoreRelatedEffect of Inhaling Various Concentrations of CO2 on Electrical Activity of the Heart1261 Words   |  6 Pagesfunctions best in a relatively stable environment. Deviations out of the acceptable ranges of tolerance have unpleasant consequences. In such a way, drastic changes in the air humans breathe have calamitous effects of body. Respiration is the basis for gas exchange, as oxygen is inhaled and carbon dioxide is exhaled. In some settings such as in small, enclosed rooms, when oxygen consumption exceeds production, or with diseases such COPD, humans breathe in dangerously high concentrations of CO2. For this reasonRead MoreThe Effect Of Salinity On Resistance, Proline, And Mineral Nutrients747 Words   |  3 P agesmineral constituents of tomato and pepper plants. Journal of plant nutrition 30.6 (2007): 981-994. 12. Fà ¶rster, H., et al. Effect of phosphite on tomato and pepper plants and on susceptibility of pepper to Phytophthora root and crown rot in hydroponic culture. Plant Disease 82.10 (1998): 1165-1170. 13. Eliasson, Peter E., et al. The response of heterotrophic CO2 flux to soil warming. Global Change Biology 11.1 (2005): 167-181. 14. Bar-Tal, A., et al. Nitrogen nutrition of greenhouse pepper. II. EffectsRead MoreThe Effect Of Photosynthesis On The Rate Of Photosynthesis1660 Words   |  7 Pageswas that if a plant receives more light, then it will have a higher rate of photosynthesis. Photosynthesis is a process that converts carbon dioxide into sugars such as glucose using energy from the sun. According to the Stern’s Introductory Plant Biology textbook, â€Å"Photosynthesis produces the building blocks of life and generates oxygen for organisms to breath† (p 165). The process of photosynthesis occurs in the leaves of plants, which are made up of small cells. Inside these cells are tiny structuresRead MorePlant Evolution1547 Words   |  7 PagesStrayer University SCI 115 Dr. David Davies November 24, 2012 Plant Evolution has been around for millions of years. In fact, plants were the first species on earth and the first to live on land (â€Å"Plant Evolution†, D. Davies, accessed 11/24/12). For 1500 million year’s photosynthetic organisms remained in the sea. This is because, in the absence of a protective ozone layer, the land was bathed in lethal levels of UV radiation. Once atmospheric oxygen levels were high enough the ozone layerRead MoreTQAS BIOLOGY Essay6628 Words   |  27 Pages0708-AS Biology Revision Top Priority Questions AS BIOLOGY TOP 60 QUESTIONS Chapter 1 1- Fig.1.1 is an electron micrograph of a mesophyll cell from a leaf. 1.5ÃŽ ¼m Fig.1.1 (a) Calculate the magnification of Fig.1.1. Show your working and express your answer to the nearest whole number. (b) Identify, by using the letters A to D, a part of the cell shown in Fig. 1.1 where the following substances are located. A chlorophyll B cellulose C DNA D phospholipid (c) State three ways in which the structureRead MoreMass Spectrometry of Protein Analysis1053 Words   |  4 Pagesand they get separated according to their mass to charge ratios. It is very important to know the condition of the observed ions if positively or negatively charged. Molecular mass is provided by the results of molecular ionization which renovates gas phase samples into ions, ion separation or mass analyser that categories the ions using their masses through electromagnetic fields and finally detection where the figures for calculating the composition of each ion is produced1. This tool is usedRead MoreThe Purpose Of The Experiment Was To Uncover Whether A1128 Words   |  5 Pagesdensities. Leaves contain, in their outermost layer of cells, called the epidermis, small pores which are regulated by two guard cells, that help balance the gas exchange and water loss within the plant. These small pores along with the guard cells are called the Stomata: they open and close due to environmental signals, allowing for the exchange of carbon dioxide and oxygen as well as allowing water vapor to escape the plant. A necessary process for the survival of the plant. The leaves of a plantRead MoreThe Duckweed Experiment: Effects of Lowering Light Intensity on the Rate of Per Capita Growth of Lemna Minor1542 Words   |  7 Pageswhich would lower the light received by the treatment groups without interfering with gas exchange. Two groups were not covered by screens in order to serve as controls. These four cups were then placed under Chroma-50 full-spectrum fluorescent lamps and kept at a constant light intensity of 54.16 micromole of photons/square meter/second measured with the Li-Cor ML250 Quantum Light Meter. The photoperiod was 12 hours for each day. The cups were kept under the light for fourteen days, with data recordedRead MoreGlobal Warming Essay1246 Words   |  5 Pagesnote that prior to the industrial revolution the concentration of CO2 levels in the earth’s atmosphere was roughly 280 parts per million (ppm), however today’s levels are at 385 ppm and still climbing. The earth’s oceans are always in a constant exchange of carbon dioxide with the atmosphere, but now the level of CO2 exchanged has increased so much that the oceans are increasingly becoming more acidic (Simon et al., 2007). This puts a strain on aquatic life such as mollusks, coral, and planktonRead MoreGas Exchange And Its Effects On The Human Body Essay3050 Words   |  1 3 PagesIntroduction All living organisms need energy, which is formed in respiration, in order to accommodate survival and reproduction. Gas exchange is a physical process wherein oxygen and  carbon dioxide  (the two main respiratory gases of aerobic respiration) move in opposite directions across an  organism s respiratory membranes, between the air or water of the external environment and the body fluids of the internal environment. Oxygen is needed by cells to extract energy from organic molecules, such

The Scarlet Letter Journal Entries free essay sample

The Scarlet Letter assignment #1 – Chapter 2, pages 6-7: I used the Visualize the Scene category. I can see Hester Prynne emerging from the prison. I can see that she is ladylike, tall, and beautiful. I can see her in a beautiful dress with the A embroidered on it walking through the crowd with her head held high and a baby in her arms. #2 – Chapter 3, pages 13-16: I used the Ask a Question category. Who is this man who has come into the town with the Indian? Why does he question a townsman about Hester Prynne? Why is one shoulder higher than the other? Why does he mention that heathens held him against his will? Who are the heathens? #3 – Chapter 4 – pages 26-27: I used the Clarify Something category. Oh, I get it! This stranger who has come into town is Hester Prynne’s husband! He has been in the wilderness where he learned some medical practices from the Indians who were holding him against his will. We will write a custom essay sample on The Scarlet Letter Journal Entries or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page They had a loveless marriage and he was much older than her and had a deformity. 4 – Chapter 5 – page 34-35: I used the Clarify Something category. Now I understand that Hester Prynne was allowed to provide embroidered articles for important people and that her needlework was on display on the clothing of the Governor, babies, and dead people. In contrast, she was never been asked to embroider a veil for a bride because of the nature of her sin. #5 – Chapter 6, pages 43-44: I used the Clarify Something category. This part is really saying that Pearl was strong-minded and wild spirited. Hester did not discipline Pearl like other parents of that time period. Hester did not use the â€Å"rod† to discipline Pearl as a â€Å"wholesome regimen for the growth and promotion of all childish virtues. † Hester stepped aside and let Pearl be her own person. #6 – Chapter 7, pages 56-57: I used the Make a Connection category. I understand that Hester and Pearl’s images were distorted in their reflection in the polished armor. Hester’s â€Å"A† is her prominent feature and the rest of her is small. Pearl also has a distorted image in her reflection. This reminds me of the mirrors and mazes at carnivals where your image is distorted to make you look larger or smaller. ) #7 – Chapter 8, pages 64-65. I used the Make a Connection category. I understand that the Reverend Dimmesdale is saying that Pearl should stay with Hester because she is a constant reminder of her sin. It is in Hester’s best interest to raise Pearl to be right eous because this is how they both will get to heaven. #8 – Chapter 9, pages 70-75. I used the Make a Prediction category. I wonder if there is any connection between Roger Chillingsworth being a man of Science and the Reverend Arthur Dimmesdale being a man of God. It is odd that these two men of two very different schools of thought would become such companions. #9 – Chapter 10, pages 83-84. I used the Make an Evaluative Comment category. I think that it is ironic that Roger Chillingsworth is talking about the burden of hiding secrets when he himself is hiding a secret. Even though Chillingsworth states that keeping secrets is taxing on the soul, he says, â€Å"Yet some men bury their secrets thus. †