Day: September 26, 2016

This is quite strange often the evil people(witches) will tell us the truth to make Us trust them and then afterwards they deceive us in our important times making us betray people which will give us big consequences

it is strange often in order to do us harm the witches tell us the truth about matters of small importance and then betray us in relation to something of imortance. Work done in class

Hasan Ali and Aahnaf Newaz

Microscopes are useful in studying cell biology because it can magnify into an object that is underneath the scope and show its cells. The cells can then be examined by scientists and therefore it builds understandings of cells. The reason why it is really helpful is because they can zoom in up to 1000 times bigger than the normal size, if it was the normal size we wouldn’t be able to examine it but this way we can.

Magnification calculation formula: Length of object= Length of magnified object/magnification

Magnification is the ability to make small objects seem larger and Resolution is the ability to separate two objects from each other.

Advantages of light microscope: Simple to use, can view both alive and dead specimen, cheap to buy and low repair costs.

Disadvantages of light microscope: Poor surface view, low resolving power and low magnification.

Advantages of a electron microscope: Good surface view and internal details, high resolving powers and high magnifications.

Disadvantages of a electron microscope: Harder to use, user requires technical skills, can only view dead specimens, very expensive and expensive to maintain.

Single celled Prokaryotes are microbes that include bacteria, prokaryotic cells are much more simple then the more advanced Eukaryotic cell. Prokaryotes cells do not have a nucleus but instead has only a single chromosome. All Eukaryotic cells contain a Nucleus within the membrane. The difference between two cells is that one has a Nucleus and the other does not have a Nucleus. Also one contains a Membrane-bound organelle and the other does not.

Prokaryotes cells contains a plasma membrane, cytoplasm, cytoskeleton, ribosomes and a flagellum. The plasma membrane is a double layer of protein and other molecules, it holds everything in it together. The cytoplasm is jell like liquid that has all the cellular organelles within in it. A cytoskeleton provides structural support and also helps in the cell division. Ribosomes are tiny protein making machines of the cell. Flagellum helps the cell move.

Root hair cells and Palisade cells are specialized plant cells. Root hair cells are used for absorbing water and minerals from the soil for plants. Palisade cells are used for photosynthesis. Root hair cells have large surface areas which can be useful and palisade cells contain a lot of chloroplasts that help for maximum photosynthesis.