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INTERNATIONAL BACCALAUREATE ESSAYS
The amount of cell division in the allium cepa root tip cell
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Mitosis is the main part of cell division. It is a process where a single cell divides resulting in two identical cells, each containing the same number of chromosomes and genetic content as that of the original cell
The effect of nacl solutions on the mass of potatoes
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Osmosis is a type of diffusion. It requires a concentration gradient and a semi- permeable membrane and, where the molecules of the solute are too big to pass through the membrane
Diversity by finding the plant species percent cover, plant population density, plant species, and the percent frequency.
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Design Defining the Problem and Selecting Variables Aim Our aim was to figure out the diversity of the location for each given specie we were given. We found diversity by finding the plant species percent cover, plant population density, plant species, and the percent frequency
Corporations lack of help with obesity
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Disease and illness is an issue that will always be present in society as long as people walk the earth. Disease Cures and scientific research for cures is a main factor on what people rely on, but in the end there isn’t a permanent solution to stop diseases it’s just a dynamic part of life
Human inheritance
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Objectives: Determine your phenotype for several traits. Determine (as far as possible) your genotype for the same traits
How can i avoid disease? – bilharzia
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Schistosomiasis, commonly known as snail fever, bilharzia and bilharziasis, is a disease caused by parasitic worms. It is the mostly deadly NTD – neglected tropical disease – affecting millions of people each year around the world
Should animals have the same rights as humans? both animals and humans exhibit behaviours in reaction to their environment. some of this behaviour is learned and some instinctive.
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Throughout human history animals have had a role to play. They have been hunted for food and parts of their bodies have been used to clothe us, shelter us and provide us with tools
Hiv prevention and transmission aois: c&s, h&se
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Viruses are unique in that they have been classified as both living and nonliving, the reason for this is that they cannot reproduce without a host cell. Also they are acellular, which mean they don’t have cells1
Investigation to find the effect of substrate concentration on the rate of an enzyme controlled reaction
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Design Aspect1: Defining the problem and selecting variables Investigation title: is the rate of an enzyme controlled reaction affected by substrate concentration? Background information Enzymes are often referred to as “biological catalysts”, since they increase the rate of reactions in living organisms. Enzymes are also substrate specific, which means that only a specific substrate can fit into its active site (which is where the catalysing effect occurs) and as such, there are different enzymes which deal with different reactions (for example, protease breaks down proteins into amino acids) – this is the basis for the 'lock and key' theory
Biodiversity investigation the aim of this investigation is to determine plant biodiversity of both land next to the pond and land away from the pond to discover what the different in plant biodiversity will be
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Aspect 1 Defining the Problem and Selecting Variables Research Question: How does the plant biodiversity of the terrestrial ecosystem between the shore of the Links pond and lO feet away from the shore differ? Aim: The aim of this investigation is to determine plant biodiversity of both land next to the pond and land away from the pond to discover what the different in plant biodiversity will be. The degree of biodiversity achieved using the Simpson's Biodiversity Index
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