The structure in cells that contains DNA and protein is the nucleosome, found in the nucleus. In the nucleus of the cell, DNA is exists in the form of a long helical thread. It order to fit inside the nucleus, the DNA thread must be compressed enough to do so.
The cell accomplishes this by wrapping the DNA thread around a protein called histone. A single unit of DNA and histone octamer (called octamer because it consists of 8 proteins) is called a nucleosome.
The entire stretch of DNA in an average human cell is about 2 meters in length and would never fit inside a cell if not for histone proteins.
The heart, blood vessels and blood itself are three essential components the body needs to survive. The circulatory system consists of two circuits that blood travels through; pulmonary and systemic.
I would say medicine that makes the immune system less effective so the likelihood of the immune system attaching the organ are decreased. Or the last option.
The answer is: lipidic balance, or also called lipid profile (or lipidic profile).
The lipid balance allows measuring the different lipid components (listed before) present in the blood to assess the atherogenic risks of a patient to take preventive measures (eating habits, lifestyle) or appropriate therapeutic.
Depending on the case, only a few parameters or all can be done. This assessment is analyzed over a long period through several measures (at least once a year starting to 40 years old, even not-obese people) to assess the cardiovascular risk.
Answer:
A. Without them, complex organisms cannot perform different
functions.
Explanation:
Different cells perform different functions to make a complex organism