Cell Membrane – The cell membrane protects the inside of the cell from outside containments‚ keeps the cell in contact and maintains its shape. This relates to mall security guards. They’re job is to protect the mall‚ make sure everything is intact and everybody is safe. Without the cell membrane‚ containments could enter‚ the security guards do the same. Without them‚ bad people or things could happen in the mall. Cell Wall – The cell wall provides structural support and protection to the cells
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ROD CELLS Rod cells‚ or rods‚ are photoreceptor cells in the retina of the eye that can function in less intense light than the other type of visual photoreceptor‚ cone cells. Rods are concentrated at the outer edges of the retina and are used in peripheral vision. On average‚ there are approximately 125 million rod cells in the human retina.[1] More sensitive than cone cells‚ rod cells are almost entirely responsible for night vision. STRUCTURE AND FUNCTION Rods are a little longer and leaner
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Fossil fuels and minerals go as far back as hundreds of millions of years ago. That is before the dinosaurs. Fossils fuels were formed in the Carboniferous Period. The Carboniferous Period occurred about 300 million years ago. In this period our Earth was covered in a swampy plant life. Lots of algae and big leafy plants covered the earth. When these plants died at the bottom of these swamps and lakes ‚they formed something called peat. Then new rock was formed on top of the peat called
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There are two types of cell transport mechanisms. These types of transports are passive and active transport. The difference between active and passive is that passive does not require energy and active does require energy. The reason passive does not require energy is because it travels down a concentration gradient. On a concentration gradient molecules naturally move from high to low concentration. In active transport‚ molecules move from low to high concentration. There are three different types
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I couldnt believe it. I had no clue on what I had got myself into. I thought I was in a nightmare. Everything was so much larger than me. I felt like I was this tiny spec on a flower. My life had suddenly flashed before my eyes. I had a feeling that my last breath was about to par take. I knew that I should have never drunk that stuff that my friend gave me. She said that it would take me to another world‚ but I didnt take her seriously. I thought it was just her joshing around. How could a normal
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world is ever growing. Our increasing need for energy‚ especially fuels‚ is rapidly accelerating to the point where we may run out of the resource that gives us 80% of our fuels‚ Fossil Fuels. 99% of today’s cars run using either diesel or petrol‚ (both are fossil fuels). At the rate these fuels are getting used‚ by 2020 the international oil suppliers will not be able to keep up with this high demand. There have been many different fuel alternatives to replace diesel and petrol‚ but none more seem more
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Assignment 1: Cell Membranes and Temperature Background Theory Beetroot contains betalain pigments within it’s vacuole‚ which gives it it’s purple-red colour‚ it’s this pigment which leaks out as the beetroot is heated and the cells membrane begins to break down. The practicals aim is to show the effect of temperature on the cell membrane by observing the colour change of the water the beetroot was placed in. The cell membrane is important as it controls the substances enters and leaves the cell with
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problems and solutions of running out of fossil fuels With the process of industrialization‚ fossil fuels have played an increasingly important role in every aspect of human live. The use of fossil fuel has shown an explosive growth in the last few decades. The term of fossil fuel refers to “coal‚ oil‚ and natural gas - fuels that were formed millions of years ago from the fossilized remains of plants or animals” (Robert‚ 2012‚ p.10). Fossil fuels supply much of the energy used by industry and
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* Question 1 1 out of 1 points | | | Which of the following is NOT a domain of life?Answer | | | | | Selected Answer: | Animalia | Correct Answer: | Animalia | | | | | * Question 2 1 out of 1 points | | | Polar molecules share electrons equally.Answer | | | | | Selected Answer: | False | Correct Answer: | False | | | | | * Question 3 1 out of 1 points | | | Which of the following is NOT a characteristic of life?Answer | | | |
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and it was also controversial to balance the technology development and the environment. The Suspects According to the documentary movie Who killed the Electric Car‚ consumers‚ federal government‚ California Air Resource Board‚ hydrogen fuel cell‚ and so forth are regarded as suspects of killing the
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