D
Essentially, the path begins from the nucleus where the DNA is transcribed by RNA polymerase that makes a nascent mRNA.
Explanation:
The nascent mRNA is processed into a mature mRNA that is sent to ribosomes that outline the membrane of the Rough Endoplasmic Reticulum. When a polypeptide chain is translated by the ribosome, from the mRNA, the chain enters the lumen of the RER where it finds chaperons that help the proper folding of the chain into a required secondary, tertiary or quaternary structure. The protein undergoes further post-translational modification. Quality Control also happens here and only ‘well-made’ proteins are allowed to pass down to the Golgi apparatus. The Golgi apparatus also performs a few additional post-translation modifications but its major role is tagging these proteins for delivery, and packaging them. Vesicle budding off of this organelle carries the proteins to the cell membrane. The vesicle fuses with the cell membrane enabling the contents in the vesicle to be emptied outside the cell.
Learn More:
To learn more about proteins check out;
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The sinking of rock layers is subsidence
Explanation:
Subsidence is the motion of a surface as it shifts downwards corresponding to a datum such as a sea level. The reverse of subsidence is uplift, which occurs in an increase in elevation.
Cows and other mammals produce milk to provide the food their babies need to grow. Seeds and milk contain proteins, fats, sugars and/or starch. 1. Explain how the fats, sugars and/or starch contained in seeds or milk are useful for the plant sprouting from the seed or the baby mammal.
It is not, 'imminent,' since the ozone layer in the atmosphere is slowly repairing itself. However, that being said, there is lots the human race can do to stop global warming. It may have more effect in 30 years time, but, if humans do enough, we can stop worrying. Renewable energy is a good idea to prevent global warming. Since most of it is generated from Co2 emissions from generating power. Electric cars are also good, because if we can make renewable energy (such as wind or solar power, or hydroelectric power for that matter) to power them, they will not produce emissions either.
