Sentences with phrase «tiny nucleus of a cell»

Histone is a protein that acts like a spool for DNA, helping to package the six - foot long DNA strand into the tiny nucleus of every cell.

To fit inside the tiny nucleus of a cell, strands of DNA wrap around histones, which are spool - shaped proteins.

Not exact matches

Histones are vitally important because our genetic material is vast: every cell in the body has more than six feet of DNA bundled within a tiny nucleus, a space much smaller than can be seen with the naked eye.

Chloroplast DNA is separate from the genome DNA in the plant nucleus, and the large numbers of these tiny organelles in the cell allow huge volumes of the coagulation protein to accumulate in each tobacco leaf.

In vertebrates, a master clock is located in the awesome - sounding suprachiasmatic nucleus, a tiny region of brain cells in the hypothalamus.

Cells contain thousands of tiny structures called mitochondria, which generate energy and harbor their own DNA distinct from the cell's nucleus.

The Ostrer study used DNA from the nucleus of the cell in its analyses, and the Behar study used both nuclear and mitochondrial DNA (mtDNA); the latter comes from tiny bodies in the living cell that provide it with energy.

Transcription factors, the tiny proteins that switch genes on or off in the nucleus of cells, are considered unreachable molecular targets for drugs attempting to treat medical conditions.

Time - lapse microscope images show the packing of chromosomes in a chicken cell's nucleus into tiny capsules.

So how does each tiny cell pack a two - meter length of DNA into its nucleus, which is just one - thousandth of a millimeter across?

Yet a group of talented young scientists recently did just that — creating an elegant 3 - D model of how the long DNA molecules fold inside a tiny cell nucleus.

This had been impossible in the past because, unlike mammalian egg cells which are tiny and transclucent, a bird's egg cell is filled with opaque yolk and it is huge — this means that finding the nucleus is like looking for a white marble in a pool of milk.

Jin moves efficiently down the line, puncturing the cell wall of each embryo and injecting the nucleus with a tiny drop of a molecular soup that will change the embryo's genetic makeup.