I have a bad habit of chewing on my finger nails
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA<span>). Passed from parents to offspring, </span>DNA<span> contains the specific instructions that make each type of living creature unique.</span>
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The Earth is essentially a closed system; it obtains lots of energy from the Sun but the exchange of matter with the outside is almost zero. Isolated systems can exchange neither energy nor matter with an outside system.
The Precambrian was originally defined as the era that predated the emergence of life in the Cambrian Period. It is now known, however, that life on Earth began by the early Archean and that fossilized organisms became more and more abundant throughout Precambrian time.
Although there should be choices in this question, many findings in the urinalysis can point out a serious illness as long as it is clinically correlated. The color of the urine such as tea-colored urine may be a sign of obstruction of the biliary tree such that in choledocholithases or stones in the common bile duct. The consistency of the urine such as when it is hazy may indicate infection or albuminuria. Sugars present in the urine may indicate diabetes mellitus. Increased WBC (or pus cells) and RBC in the urine may point to a urinary tract infection (pyelonephritis) or glomerulonephritis. A positive protein in the urine may indicate albuminuria characteristic of nephrotic syndrome.
