Cellular respiration:
Cellular respiration is the process by which cell break down glucose with oxygen to store the energy as adenine triphosphate or ATP. Energy from ATP is used to help the cell perform daily functions like growing, dividing and repairing itself. Glucose can either be created through photosynthesis in plant cells or ingested in animal cells.
There are four phages of cellular respiration.
• Glycolysis
• Transition stage
• Citric acid cycle
• Electron transport chain
<span>The reason why Mendel recorded the results of so many plant crosses is that he wanted to demonstrate how certain genetic traits are expressed in different generations. This way he could demonstrate what traits are dominant or recessive in plants.</span>
Operons are gene regulatory mechanisms that involve promoting and repressing genes that are involved in the metabolism of organic substances (i.e. sugars). Living organisms have the innate ability to metabolize glucose as the main source of energy. Although, in the absence of glucose, the organism must "learn" to use sugars other than glucose (such as lactose) in order to survive.
For instance, in the <em>lac </em>operon:
In the absence of glucose, various regulatory proteins promote the transcription of the gene related to the metabolism of lactose. This will ultimately lead to the production of the enzyme beta lactosidase which will enable the organism to use lactose as energy in the absence of glucose. This will therefore increase the chances of the organism for survival and will be naturally selected for evolution.
Answer: "nasal septum" .
_____________________________
