Answer:
Nucleus
:
Holds DNA and all the components of proteins.
All Eukaryotic cells have a nucleus and the rest of the membrane-bound organelles
Prokaryotic cells have no nucleus
Ribosomes
:
Take the amino acids and package them into protein chains.
Ribosomes are on the outside of the endoplasmic reticulum
Endoplasmic Reticulum
:
Organelle that transports the completed protein within the cell
Golgi Apparatus
Transports the completed protein from the ER to the outside of the cell. Vesicles carrying the proteins break off the Golgi apparatus moving the proteins outside of the cell
Plasma Membrane
Selectively permeable membrane that allows passage of many materials into and out of the cell.
Transport proteins on the surface help send out messenger proteins to other cells.
Explanation:
Once proteins leave the cell they will be received by another cell. In this way, cells are able to communicate with each other. All cells have protein receptors on them which recognize specific proteins.
<span>
DNA reactive chemicals are mutagenic compounds that can make direct interactions with DNA and thus make a change in base sequence of DNA. For example, deaminating agents, such as nitrous acid can cause transition mutations by converting cytosine to uracil.</span>
Also, base analogs can substitute for DNA bases during replication and cause transition mutations.
Decomposition is not a fast process. There are 5 steps to it. So in this case it would be FALSE.
Answer: crossing over happens in prophase 1.
Explanation: ( in Portuguese ) os cromossomas homólogos, na profase 1 da meiose, tocam-se, trocando informações sobre o ADN. A esse processo chama se crossing over.
