Conjugation is the direct transfer of DNA from one bacterium to another.
Bacteria can exchange genetic information through three different mechanisms; conjugation, transduction, and transformation. Bacterial conjugation involves the transfer of a plasmid from one bacterium to the other, through cell-to-cell contact. Bacterial transduction is performed through bacteriophages. Bacterial transformation refers to the process of moving genetic elements to various positions of the genome.
Answer:
a. Blood vessels are constricting causing greater peripheral resistance.
Explanation:
Peripheral vascular resistance means the resistance in the circulatory system that is used to control blood pressure and the flow of blood. When blood vessels constrict, there would be an increase in systemic vascular resistance. When blood vessels dilate, there would be a decrease in systemic vascular resistance.
Answer:
The correct answer is stem cell
Explanation:
Stem cells are the cells that can convert into any specific type of cell by dividing it repeatedly. So stem cells are unspecialized and can give rise to specialized cells.
As they can divide repeatedly and give rise to a specialized type of cell they allow the body to heal, repair and grow. There are different types of stem cell like induced pluripotent cell, adult stem cell, an embryonic stem cell.
Stem cell transplant is used to in the patient who cannot produce normal blood cell, for example, bone marrow transplant.
Answer:
brainliest plzzzzz
Explanation:
There is a proper mechanism of controlling the levels of various kinds of hormones and chemicals in our body called as positive feedback and negative feedback.
In a very simple language you can understand it as whenever there is a release of a particular hormone or chemical inside the body in very huge amount then the negative feedback of the body is activated the production of that particular hormone or chemical is stopped and vice -versa for negative feedback.
Explanation:positive feedback and negative both the feedback mechanism are achieved to maintain the proper homeostasis.
Example: release of clotting factor after blood loss is a positive feedback and a hormone is released and then suddenly there is a increase in hormone b, then the amount of hormone a will decrease this is a negative feedback.
