Biology What is cholesterol? Cholesterol‚ a waxy substance produced by the liver and found in certain foods‚ is needed to make vitamin D and some hormones‚ build cell walls‚ and create bile salts that help you digest fat. our liver produces about 1‚000 milligrams of cholesterol a day‚ enough cholesterol for the body to be ok without food with colesterol but it’s hard to avoid cholesterol entirely because so many foods contain it. Consequences o high cholesterol. Too much cholesterol in the
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What is the aim of the study? [1 mark] The aim of this study is to modify knowledge of genes and enzymes for carotenoid biosynthesis in plant and also put some light on the challenges that are currently being faced by plant developmental biology and biotechnology. What is the author’s hypothesis? Was it supported or refuted by their research? [2 marks] The author’s hypothesis was that‚ “ Carotenoids protect photosynthetic organisms against potentially harmful photooxidative processes
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Cycles in Biology Cycles in biology play a fundamental role in the world that we live in. Cycles occur all around and inside of us in many different forms‚ from the Krebs to the Calvin cycle. There are large scale cycles happening and they are essential in regulating the nutrients and substances that are around us which without‚ life on earth could no function. One of the largest cycles that occurs all around us is in everyday life is the carbon cycle. The current atmospheric
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Week 13 Review Biomes 1. What is a biome? a. Large area of similarly adapted species 2. How are plants similar and different in the biome of two different locations? a. Plant species vary but plant for is similar 3. How does latitude influence biomes? a. Above 60o N latitude Artic b. Below 60o N latitude 4. How does continental placement influence biomes? a. Coastal areas more moderate temp fluctuations b. Interior areas more extreme temp fluctuations c. Areas behind mountains
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A2 Biology Coursework A1- Develop a hypothesis Outline your biological knowledge or research related to the problem under investigation Yeast are eukaryotic species and make up approximately one percent of species in the kingdom Fungi. One of the most well studied yeast species‚ Saccharomyces cerevisiae‚ commonly known as bakers yeast‚ and also used in the fermentation of alcohols‚ is a model species for the study of eukaryotic cells. They are known to reproduce either sexually‚ by mitosis‚
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born in Derby‚ England 1855 - he published his second book Principles of Psychology which was about exploring a physiological basis for psychology. 1864 - know for coining the expression "survival of the fittest" which he did in the Principles of biology. 1862 - First Principles of a New system of Philosophy. 1902 - Spencer was nominated for the Nobel Prize for literature 12/8/1903 - died Ronald Fisher 2/17/1890 - Born in East Finchley‚ London‚ England 1925 - published a book called ’Statistical
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Biology revision -keeping healthy Diet and Exercise What should a balanced diet include? Carbohydrates‚proteins‚fats‚vitamins‚minerals‚fibre‚water. Don’t get enough of these? Become malnourished. How much energy do we need? The energy you need depends on various things : 1. Gender- Males need more energy then females‚ Bigger size‚ have a bigger ratio of muscle to fat than women. 2. Age- Young people are still growing‚ they are reproducing and are more active (exercise) than old people
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Biology Reviewer I. Definition of the cell -Cell is the basic unit/structure of life II. History of cell A. (1665) Robert Hooke- discovered the cell and he established the drawing of a cork cell B. (1674) Anton van Leeuwenhoek- observed red blood cell and myriad in a single cell organism in Pond water -discovered
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increasing pH? Which structures‚ if found in a cell‚ would provide the best evidence that the cell is eukaryotic? Where in the cell do the following occur? Calvin cycle‚ glycolysis‚ Kreb’s cycle‚ electron transport chain. Students in a biology class tested the effects of antibiotics on the growth of bacteria. They cultured bacteria in four glass Petri dishes and then added different amounts of antibiotic to each dish. After the experiment is completed‚ what should be done with the Petri
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Student name: Ihtishaam Ali Date submitted: 3/1/15 Chapter: 11 Chapter Review Questions Questions are at the end of each chapter under the “For Review” heading 1. Consideration is an essential element in the formation of any contract not by deed. To be valid the consideration must be real and genuine 2. Promises to make gifts for charitable or educational purposes are often enforced‚ despite absence of consideration. 3. No 4. It must be for a reasonable period‚ not excessive in duration
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