Animal Cell Organelles & Their Functions 1. Nucleus - The nucleus generally contains the genetic material for the cell. Because it contains the DNA and chromosomes‚ which affect the proteins that determine the activities of the cell‚ the nucleus can be considered to be the cell’s control centre. 2. Cytoplasm - The cytoplasm contains primarily water and protein material. This is where the other cell organelles reside‚ and where most of the cellular activities take place. 3. Cell Membrane - The cell
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IF YOU THINK YOU CAN‚ YOU CAN “IF YOU THINK YOU CAN‚ YOU CAN” is a common phrase which we often use in vain.It means that if you have will and determination you will always find a way to success. For reaching the peaks of glory you should have a will to cross any hurdle that comes in your way. WINNERS NEVER QUIT AND QUITTERS NEVER WIN. Life’s battles don’t always go To the stronger or faster man. But sooner or later the man who wins‚ Is the man who thinks he can. Good morning everyone‚
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Jim Hanas You Can Touch This is a very symbolic short story that depicts the meaning of judgment in society. This story presents a play center for children named You Can Touch This. Normally children are always told ‘Don’t touch this’ or ‘Don’t touch that’ or even “Once we get in the store please do not touch anything‚” but in this fun place‚ made only for kids‚ the children can be doctors‚ they can go shopping‚ they can do things they wouldn’t normally do in reality. After analyzing You Can Touch This
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to pass through it. This layer is composed of molecules called peptidoglycans. Just inside the cell wall is a less rigid envelope called the plasma membrane also known as the cytoplasmic membrane. In bacterial cells the plasma membrane has two primary functions: it serves as a selective barrier to molecules that are penetrating the cell wall allowing water and oxygen to flow easily into the cell but restricting other proteins from entering; secondly‚ the plasma membrane contains enzymes proteins that
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Long stands of double helical DNA can fit into the nucleus of a single cell because DNA is specially packaged through a series of compaction events to fit easily within cell nuclei. Even though the length of DNA per cell is about 100‚000 times as long as the cell itself‚ it only takes up only about 10 percent of the cell’s volume. The DNA molecule‚ in order to condense‚ wraps itself around groups of histone proteins‚ and then the chromatin folds back on it‚ nucelosomes pack together to create a compact
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the structure of DNA was on. James Watson and Francis Crick model builders were working on finding out the structure of DNA first. I Rosalind Franklin a crystallographer am also working on finding the structure of DNA. But before I could officially identify the structure of DNA‚ Watson and Crick were successful. Now James Watson is writing a book about DNA‚ and I am told to give some feedback about it. I will be telling you about what I think about James Watson’s book‚ The Double Helix. I will be
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(b) AMP (c) ATP (d) GTP [1] (c) Shrink (d) Show plasmolysis [1] (c) Mitochondria (d) Chloroplast [1] (d) Nerve cell [2] [2] [2] [2] [3] [3] [3] [1] A cell in placed in hypotonic solution will -: (a) Swell up (b) Not undergo any change 3 Which organelle release oxygen? (a) Ribosome (b) Golgi apparatus 4 Which of the following human cells lack nuecleus? (a) WBC (b) RBC (c) Muscle cell 5 6 7 8 9 Which organelle is called ‘digestive bag’ and why? Why is osmoregulation is necessary
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Bullying: What Can You Do? Bullying in America used to be a rite of passage for kids of all ages‚ something that everyone went through‚ and survived‚ coming out none the worse in the end. I remember going through it. It wasn’t easy‚ and I had to endure quite a bit of it because of what I looked like‚ even as a seemingly regular kid. But I survived‚ nonetheless‚ and came out better for it‚ more empathetic‚ and more sensitive to the needs of those around me who may not have been able to find
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Chapter 6 Resting Membrane Potential (RMP) What is the Resting Membrane Potential (RMP)? ELECTRIC POTENTIAL – separation of opposite charges between 2 points. (“Has the potential to do electrical work if allowed to come together!”) vs. large potential difference small potential difference Magnitude of charge separation = potential difference ** measured in volts (1 Volt
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function of the nucleus and mitochondria. The mitochondria is a semi-autonomous organelle which reproduces by bynary fission and has its own DNA. Its main function is to produce the energy intermediate ATP‚ through ATP synthase. Mitochondria could be considered a cell inside a cell. It has its own membranes (inner and outer membranes)‚ its ribosomes (to produce the proteins encoded in its DNA)‚ a matrix -- where aerobic respiration occurs. The invaginations of the inner membrane‚ called cristae‚ greatly
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