Answer:
B) a signal-recognition particle that brings ribosomes to a receptor protein in the ER membrane.
Explanation:
Each synthesized protein has to be targeted to the specific location and transported to that location. There are two possible ways for that transport: post-translational transport or co-translational transport.
• Co-translational transport occurs during the process of translation, and proteins transported this way are proteins bound for organelles in the endomembrane system (such as the ER, Golgi apparatus, and lysosome), plasma membrane proteins or proteins for the exterior of the cell. They have an amino sequence called a signal peptide which sends them to ER first.
• Proteins that do not have a signal peptide stay in the cytosol so, their transport is after the translation (post-translational).
Endocytosis and exocytosis are similar in that they are both forms of cell transport. They differ because in endocytosis, a cell transports molecules into a cell (think: endo - in), and in exocytosis, the cell's molecules are transported by being expelled.
Answer:
without the sun we probably be freezing that's why we need the son it keeps us warm and the sun gives use radiation energy which could help us power things.
Explanation:
Viruses enter a host cell when the host cell recognizes and binds the glycoproteins on the virus's surface, then take in the virus by phagocytosis. Thus, d. is the correct answer.
Answer:
potential energy is stored energy and the energy of position.chemical energy is energy stored in the bonds of atoms and molecules.
Explanation:
I think this is the answer
