Structure & function

What is Structure and Function.

 Function and structure are related, because of a certain structure a living thing make contain makes the object function the way it does. The are a lot of structural future in humans, plants, animal and all living things. The relationship of a structure and function is the structuring levels from molecules to organism ensure successful functioning in all living organism and living system. Note one structure can have multiple function.From my under standing structure and function can be broken down in to several part like chemical level which deal with  atoms proton etc as the structure and what they do is the function.

 

 

Classification of Living Things

Living things are placed into groups based on both structural and functional similarities. For example, bacteria are prokaryotic cells, which means they lack a true nucleus. These are structural characteristics. A functional characteristic which defines bacteria is that they reproduce by binary fission. Plant cells are structurally different to other cells because they contain a large central vacuole and plastids such as chloroplasts. These structural features also support a plant’s function, since the presence of chloroplasts allows the plant to carry out photosynthesisExample of a structure and function:

Amino acids structure directly affects its function. It’s a lock and key method that cannot work unless the structure fit together. When they fit they can carry out the function of speeding up a chemical process.

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• Chemical level – the structure of molecules determines the properties of substances, which, in turn, determine their functions. For example, the chemical structure of metals allows them to conduct electricity, which makes metals useful as conductors
  

   

Cellular level – the structure of cells is linked to their function. For example, lung cells are very thin, which allows gases to diffuse easily through the cells. 

Cellular Processes

There are several types of cellular processes that occur in the cells of living things. 

Photosynthesis is the process where plant cells use sunlight energy to produce glucose and oxygen. The opposite process to this is cellular 

Meiosis and mitosis are two forms of cell reproduction. In mitosis, a cell produces an exact copy of itself. This is a form of asexual reproduction. It also occurs for other processes, such as hair growth, skin repair, and cell regeneration. In meiosis, a cell is produced that is not an exact copy. Instead, the cell has only half the number of chromosomes as the parent cell.Meiosis is the basis for sexual reproduction, where a cell with a complete set of chromosomes is produced when two gamete cells combine. 

DNA replication   is a biological process that occurs in all living organisms and copies their DNA; it is the basis for biological inheritance

 

Practice Question

For this question we know that cellular respiration    
The process of cell in which cells turn food into usable energy in the form of ATP. We know we consume oxygen and then release carbon dioxide. Looking on the option a only part it true .We consume energy, but we don’t absorb energy we use our stored energy. B is no right at all we don’t produce oxygen. C is the correct answer we consume oxygen and release energy. D is like B so it wrong also.

We know that the nucleus is the the center of the cell.We can use common sense.you can say that since it the center it control the whole cell. Number two say it controls the cell. number three say control also but it not the answer.Three is say some .but the nucleus controls all of the cell.