Answer:
Peripheral vascular resistance (systemic vascular resistance, SVR) is the resistance in the circulatory system that is used to create blood pressure, the flow of blood and is also a component of cardiac function. When blood vessels constrict (vasoconstriction) this leads to an increase in SVR.
The relationship between BP and viscosity is such that, given a constant systolic BP, if blood viscosity increases, then the total peripheral resistance (TPR) will necessarily increase, thereby reducing blood flow. Conversely, when viscosity decreases, blood flow and perfusion will increase.
Answer:
DNA is like a ladder, it's structure is double helix much as the specific sequence on letters on base pairs are like single rung along the genetic ladder and sugar phosphate.
Explanation:
DNA or Deoxyribonucleic acids is a genetic material found in humans and other living organisms. It is located in the nucleus and sometimes it is found in the mitondondrial in small amount.
The information in DNA is stored as a code made up of four chemical bases; Adenine (A), Guanine (G) , thymine (T) and cytosine(C).
DNA replicates and make copies of it self. It is formed by based pairs attached to sugar phosphate.
Answer:
New cells are spontaneously created from existing cells
Explanation:
In the 1830's, three scientists namely: Matthias Schleiden (a botanist), Theodor Schwann (a zoologist) and Rudolf Virchow proposed the Unified cell theory. In this theory, three parts were universally accepted and they are as follows:
1) Cells are the fundamental and basic unit of all life and structure.
2) All living organisms are made up of one or more of these cells.
3) New cells arise from already pre-existing cells.
These three parts are the widely accepted parts of the cell theory. Although, it was once believed that new cells arose from inorganic matter. This theory, called spontaneous generation or abiogenesis was later disapproved.
Therefore, the statement that, "new cells are spontaneously created from existing cells" is not a part of the CELL THEORY.
No wasp have an exoskeleton
Answer:
Humanitarian aid are the most important to the prevention of famine conditions
