At one time, cell biologists thought that the various reactions needed to make and then finish a messenger RNA--all of which are necessary if protein synthesis is to take place--could occur anywhere in the nucleus. But recent cytological and biochemical studies are revealing that the reactions ...
How is the integumentary system different from a cell membrane? How are meristem cells modified? Do epithelial cells have a free surface? How do red blood cells live without a nucleus? How does cell differentiation happen? How do the nucleus and endoplasmic reticulum work together? How do phosp...
How do cells come together to make organ systems? How do red blood cells live without a nucleus? How do cells use energy? How do some cells become brain cells? How do animal cells complete the cell cycle? What are the functions of epithelial tissue?
"The chromatin, which is the 'instruction manual' of every cell, is tightly folded inside the cell nucleus. The way it unfolds or 'opens' when activated has an impact on how the instructions are 'read' and interpreted by the cells," said study principal investigator Di Giovanni, who holds...
The nucleus is extruded from the cell as it matures. An RBC can change shape to an amazing extent, without breaking, as it squeezes single file through the capillaries. (Capillaries are minute blood vessels through which oxygen, nutrients and waste products are exchanged throughout the body.)...
When large atoms split into one or more smaller atoms, giving off other particles and energy in the process, we call it nuclear fission. That's because the central part of the atom (the nucleus) is what breaks up and fission is another word for splitting apart. Nuclear fission can happen...
By compressing the nucleus of the iron atom, we add energy to its 26 protons and 30 neutrons. If we press hard enough, the protons and neutrons will burst apart into what they're made of: smaller particles called quarks. We'll then have a mess of quarks -- the type of quarks called...
Cell body: This main part has all of the necessary components of the cell, such as the nucleus (which contains DNA), endoplasmic reticulum and ribosomes (for building proteins) and mitochondria (for making energy). If the cell body dies, the neuron dies. Cell bodies are grouped together in...
This is slightly more than the 80% that we share with mice and far less than the 98% that we share with chimps. What Is DNA? Deoxyribonucleic acid (DNA) is an organic molecule found in the nucleus of cells. It contains the genetic instructions for all living organisms. DNA is the ...
What are non-histone proteins? a. All proteins associated with DNA that are not histones. b. They are the class of proteins that are found in the nucleus but have no effect on DNA. c. Proteins that bind covalently rather than non-covalently to DN...