Cells

Cells

Observing Cells How do we observe cells? We observe cell by using an instrument called a 'microscope'. A microscope comes in handy for when we want to see thing more deeper inside certain objects or animals. Like Human Beings. Now we need to know this, ALL living things are made up of cells. Cells, cells are made up from smaller particles called organelles. Organisms such as bacteria can me made up from once single tiny cell. Parts of a microscope These are the parts of a microscope: eyepiece, objective lens, coarse focus, fine focus, light and the stage.                                                                     We would also need to use a slide but a slide isn't part of the microscope its self.   The formula might be useful: (Total magnification = eyepiece lens magnification x objective lens magnification)

Plant and Animal Cell and others... What is inside an animal cell you may ask? So, inside an animal cell there is a: nucleus, cell membrane cytoplasm, and mitochondria. What is inside a Plant Cell, you may also ask? Well in a Plant cell there are all the components of the animal cell and so others like the chloroplasts, cell wall and the vacuole. There are more cells than that. Lets not forget about the red blood cells, the root hair cells, nerve cells, sperm cells and the egg cells these are called specialised cells.  

Movement of cells Cells move around and pretty much everywhere inside your body. But why exactly do they move? They move because our bodies need something called glucose and oxygen. Some of our parts need it so thats why cells move around. Some cells make something called waste products, for example carbon dioxide which is produced during respiration. It passes out of the cell and then to the lungs where you breathe it out. Now lets look at how they move. They move by a process called diffusion, diffusion is the spreading of particles from an area of high concentration to an area of low concentration.    Diffusion in Plant cells Now that we have learnt diffusion in animal cells let s learn about diffusion in plant cells. Plants need a water supply every so often for photosynthesis. Water moves into the plant through the root hair cells. The water molecules move from soil (high concentration) to the root hair cell (low concentration). Then water travels from root hair cells to other cells.   Unicellular organisms  Unicellular organisms are organisms that are made up of just one cell. Some types of unicellular organism are Euglena (Yoog-leena) and Amoeba (Am - oe - ee - ba).   What is 'Euglena' Euglena is a microscopic unicellular organism found in fresh water and 'Amoeba' is an unicellular organism with no fixed shape and can be found in fresh water, salt water, wet soil and even in animals!