Your answer is true my friend.Good luck
<span>Isometric muscular contractions do not change the length of the muscle they are responsible for movement. Isotonic muscular contractions will lengthen or shorten the muscle. Concentric contractions shorten the muscle. Eccentric contractions lengthen the muscle.</span>
Answer:
Yes, there could be a fourth statement to cell theory
The fundamental building blocks of life are cells. No matter how large or little, straightforward or complex, the cell hypothesis holds true for all living things. Cells are believed to be a component of all living things, hence they can reveal information about all life.
Schleiden and Schwann advocated spontaneous generation (also known as abiogenesis) as the mechanism for cell origination, but spontaneous generation was later demonstrated to be false. The famous phrase "Omnis cellula e cellula" by Rudolf Virchow "Only pre-existing cells can give rise to new ones." However, the portions of the hypothesis unrelated to how cells first formed withstood scientific investigation and are currently accepted by the majority of scientists. The following are the elements of contemporary cell theory that are commonly acknowledged:
The basic unit of structure and function in living things is the cell.
One or more cells make up every living thing.
Through cellular division, new cells are created from existing ones.
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The correct answer is: In trisomy there would be one extra chromosome; in a duplication, the number of chromosomes would be normal, but one chromosome would have two copies of a portion of the chromosome.
Trisomy is a type of polysomy (chromosome aberration with extra number of chromosome/s) and also type of aneuploidy (an abnormal number of chromosomes).
Instead of the normal two (one from mother one from father) chromosomes, people with trisomy have three chromosomes. This condition occurs when chromosome pairs fail to separate properly during cell division.
Duplication, on the other hand, usually refers to a region of DNA that is being duplicated. This condition occurs as products of several types of errors in DNA replication and repair machinery.
