The Only Home We Have “Home is the place where they have to let you in.” From the beginning of the life on earth, every living creature has felt the sense of belonging. Belonging to some place that makes us safe, comfortable and peaceful. It’s called home, in today’s language. Home is the place where we all born, raised and come back again everytime when we leave. It’s what we need to be able to continue living. Since the life has begun on the earth, nature is the home for all living creatures.
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All living cells have the same cell structure, which is to say: plasma membrane, cytosol, ribosomes, and at least one chromosome. The plasma membrane is vital to the cell to be able to perform even basic functions. The plasma membrane is made up of fats and proteins (Editorial Board, 2012). The basic function of the plasma membrane is to be able to allow certain molecules to pass in and out of the cell. The fat helps to allow food and waste to pass through the cell, while the protein serves as
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Asexual reproduction Organisms that reproduce asexually do not have to rely on another individual organism to provide gametes and are at an advantage when sudden or unexpectedly favourable conditions arise because they can quickly reproduce themselves (with offspring identical to the parent). This can become a competitive edge if the organism lives in an environment that is often disturbed, and they are particularly well suited to a certain environment or habitat. Asexual reproduction among plants
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structures and their units are cells, tissues, organs and systems. Cells – these are the smallest independent unit in the human body and can only be seen with a microscope. There are many different types, shapes and sizes. Each type is specialised and carries out a particular function in the body. The types of cells include epithelial cells (the skin), muscle cells, nerve cells, bone cells and blood cells. Every cell has a nucleus, (except red blood cells), a cell membrane and cytoplasm. The nucleus
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research into therapeutic cloning can expand the knowledge of how certain diseases and cancer attack the body, and how this knowledge can help fight and even eliminate both these issues. Another topic of discussion is how cloning could lead specific cell production of various organs and tissues through-out the body which can lead to curing failing organs and even the possibility of growing replacements organs thus doing away with then need for lengthy organ transplant lists and the needless suffering
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1. Cells 1.1 Describe the structure and function of animal cells to include: * cell membrane * Exhibits selective permeability, regulates the passage of material into and out of the cell. * Lipid membrane one factor responsible for the control of material into and out of the cell, in addition to the proteins in the membrane. * Hydrophobic interior prevents charged or v. Polar molecules from diffusing across membrane. Small non-charged can pass through * cytoplasm * nucleus:
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body structure units and their functions? The four basic human structures are cells, tissues, organs, and systems. The cell is the smallest building block of the body, and is the basic structural and functional unit of all known living organisms. They live independently and can reproduce itself. A group of cells form Tissues. They come in all different sizes such as elongated, square, oval and even star shaped. The cell is made up of protoplasm (jelly like substance), it is 70% water plus organic
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Physiology Nutrition photoautotroph and chemoautotroph Metabolism- aerobic and anaerobic Reproduction - Binary Fission rapid transverse cell division resulting to two equally sized daughter cells Habitat Ubiquitous Soil Water Air Living Organisms Pathogenicity Adhesion bacteria uses fimbriae to attach to surfaces ; sex pilus to attach to other bacteria Resistance increased by the type of cell wall, and presence of endospore, capsules, slime layers Toxin the lipopolysaccharide upper
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Area of the cell | Function of the cell | Cell-Cells are the basic building blocks of all living things. They provide structure for the body, and also take in nutrients from food and convert those nutrients into energy and carry out specialized functions. | In the human cell, firstly we have the red blood cells; these carry oxygen around the body from our lungs, to the rest of our body. The nerve cells carry nerve impulses to different parts of the body which carry electrical signals around the
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-Growth 6) -Reproduction - either sexual or asexual >DNA is genetic information, the “blueprint” for the offspring< 7) -Ability to evolve - to change to fit the environment Complex, organized structure The complexity of life is built in levels. (see fig 1-2) Each level has ingredients or components which interact to make something greater than the sum of the parts. -Subatomic particles -Atoms -Molecules -Organelles (not present in prokaryotes) -Cells -Tissues (present
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