Chromatin is a packaging material for DNA. If not packed well, it can tangle around itself or get damaged during cell division. The size of cells is in micrometers and a DNA can be as long as 3 meters. In order to fit such a lengthy structure into a micrometer cell, tight packing ...
cell nucleus,karyon,nucleus- a part of the cell containing DNA and RNA and responsible for growth and reproduction sex chromatin- chromatin found only in female cells; "the presence or absence of sex chromatin in cells obtained by amniocentesis makes it possible to determine the sex of a fetus...
The meaning of CELL is a single room (as in a convent or prison) usually for one person. How to use cell in a sentence.
chromatin [kroh-muh-tin] Phonetic (Standard)IPA noun ,Cell Biology. the readily stainable substance of a cell nucleus, consisting of DNA, RNA, and various proteins, that forms chromosomes during cell division. Discover More Other Words From...
Define Stain (biology). Stain (biology) synonyms, Stain (biology) pronunciation, Stain (biology) translation, English dictionary definition of Stain (biology). v. stained , stain·ing , stains v. tr. 1. To discolor, soil, or spot: The spilled juice stain
History of Discovery Walther Flemming discovered chromosomes in 1878. He termed the thread-like structure found in the nucleus as ‘chromatin’. While the term ‘Chromosomes’ was coined in 1888 by W. Waldeyer. Reger Kornberg, in 1974 reported that chromosome is made up of DNA and protein. ...
of the cell. Since DNA is a long molecule, it needs to be wound tightly to fit in the cell and stay organized. When DNA is wound tightly it is known aschromatin. Think of chromatin as being like a rubber band that is twisted until it coils and eventually coils on top of itself, fo...
Before a cell decides to replicate, its DNA is in loose chromatin form so that cell machinery, like various proteins, can easily read the instructions, orgenes, that the DNA contains. Lesson Quiz Course 10Kviews Composition of Chromatids ...
on certain cells. Cilia, hairlike structures that extend from the surface of many cells, can create movement of surrounding fluid. The nuclear envelope, a double membrane surrounding the nucleus, contains pores that control the movement of substances into and out of the nucleoplasm. Chromatin, a...
Euchromatin(eu -chroma- tin) - a less compact form ofchromatinfound in the cell nucleus. Chromatin decondenses to allowDNA replicationandtranscriptionto occur. It is called true chromatin because it is the active region of the genome.