Aerobic and Anaerobic Respiration

There are two types of respiration (i) aerobic respiration and (ii) anaerobic respiration. While aerobic respiration is a process that requires oxygen, but in anaerobic respiration, oxygen is not required. Therefore aerobic and anaerobic respiration differs in terms of the amount of energy that is produced. n aerobic respiration, oxygen is always required.
During the process of aerobic respiration, the molecules of food are broken down to obtain energy. Oxygen is present at the end point of the electron acceptor. The molecules of fuel that are generally used by the cells of the body during the process of the respiration are composed of glucose, fatty acids and amino acids. In other words, when there is respiration through the aerobic process, Glucose together with Oxygen produces Energy, Carbon Dioxide and Water. Aerobic Respiration also produces more energy than Anaerobic Respiration.
Generally anaerobic respiration is always used by the primitive living organisms, which live in places where oxygen is missing, like muddy bottom of a river. In such places, the organism survives without depending to a large extent on oxygen. These habitats are known as anoxic.

Diffusion

Diffusion is the movement of particles from a higher concentrated place to a lower concentrated one. Like when your sister fart, you will smell it a mile away, that's because the fart particles will travel from a higher concentrated place(your sister's butt) to a lower concentrated one(your nostril).

Diffusion can mean the spreading movement of any particle, that means that your sisters fart isn't the only thing that can diffuse. Diffusion only stops when the concentration becomes the same in all the places.

Starch test Experiment

If starch is found in a leaf, it means phtotsynthesis has taken place. The question is: how to test a leaf for stach?
1. Pluck a leaf from a plant that has been exposed to sunlight for a few hours.
2. The leaf is then placed in a beaker of boiling water to kill and soften it.
3. The leaf is then removed from the boiling water using a celan glass rod.
4. It is subsequently put into a test tube containing some alcohol. Alcohol can decolourise the leaf by removing chlorophyll from it.
5. The test tube with the leaf inside is then placed very carefully into a beaker of hot water for the decolourisation process to take place.
If photsynthesis has taken place, glucose will be formed. Excess glucose produced is stored in the form of starch. The presence of starch in leaves shows that photosynthesis has taken place. The iodine test will be usd to test for starch. Iodine solution is yellowish brown in colour. Iodine solution turns blue-black in the presence of starch.

Photosynthesis

Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which cellular respiration converts into ATP, the "fuel" used by all living things. The conversion of unusable sunlight energy into usable chemical energy, is associated with the actions of the green pigment chlorophyll. Most of the time, the photosynthetic process uses water and releases the oxygen that we absolutely must have to stay alive. Oh yes, we need the food as well!
Formula for Photosynthesis
: 6 H20 + 6 CO2 --> C6H12O6+O2