<span>A.elements in a compound are always in a constant ratio </span>
An enzyme, which cleaves DNA after identifying a specific sequence of DNA is known as a restriction enzyme. The restriction enzymes are regarded as molecular scissors. The restriction enzymes are used by scientists to cleave a single gene from a bigger DNA piece that is, a fragment of foreign DNA and is spliced into a phage genome with the help of DNA ligase and restriction enzyme.
The packaging of recombinant phage DNA is done in vitro and is permitted to infect a bacterial cell. The infected bacteria generate novel phage particles, each comprising a foreign DNA.
Answer: The door is the cell membrane
Explanation: cell membranes control what enters and leaves a cell
Answer: The boss is the Nucleus
Explanation: It controls what happens within the cell
Answer: The machine is the Golgi apparatus
Explanation: This organelle processes, sorts, packs and delivers the products to the cell
What do you mean ?? Oh don’t understand!?!?
Answer: The immune system
Explanation:
The immune system is a complex network of proteins and cells that defends the body against infection or any invasion. The human defense system in the body is actually made up of entire organs and vessel systems like the lymph vessels. The immune system is made up of organs that control the production and maturation of certain defense cells.
Initially, all living things are subjected to attack from disease causing agents. Even bacteria, so small that more than a million could fit on the head of a pin, have systems to defend against infection by viruses. This kind of protection gets more sophisticated as organisms become more complex.
