Facilitated diffusion
<span>The word 'diffusion' means free movement across distance, with or without the presence of a barrier. However, there is a phenomenon known as facilitated diffusion which occurs at the cellular level. The cell does not allow free radicals and other harmful substances to enter and harm the cell organs. This is possible due to the structure of the cell membrane. The structure is such that, it allows only certain things to pass in and out of the cell. One such activity that allows selective movement in and out of the cell is the process of facilitated diffusion.</span>
Answer:
using multiple origins of replication on each chromosome
Explanation:
Answer:
DNA
Explanation:
the parent's DNA are in the genes so when they get transferred, their offspring receives them.
Answer:
The rough ER
Explanation:
Generally the formation of native disulphide bond is essential for the folding and maturation of proteins in the secretory pathways.These bonds are formed in the rough E.R, and also in the intramembrane of the mitochondria.
Basically an oxdative parthways is required for the disulfide bond to form, while a reductive pathway is needed for the formation of isomers for non-native disulphide bonds. These oxidative pathways takes place in the rE.R
Generally the disulphide bonds is usually formed by oxidation of two cysteines bonds. it does not occur in the cytoplasm because it is always in reduced state due to the presence of disulphide reductase. The same explains why it does not occur in the Nuclei
