The nucleus is the control center of the cell. It contains the cell's genetic material, which is DNA. The DNA is organized into chromosomes. The nucleus is surrounded by a nuclear membrane, which controls what enters and leaves the nucleus. Cells perform many different functions. Some of the...
Where in the cell is RNA made? Why is chromatin packaged after DNA replication? What is the type of cell in which most DNA is found in the nucleus? What is the difference between DNA, chromatin, and chromosomes and what is the significance of each form?
Where is DNA located in the prokaryotic cells? How is a typical prokaryotic genome similar to a eukaryotic genome? a. Both are composed of circular chromosomes. b. Both are composed of multiple, linear chromosomes. c. Both are composed of DNA packaged in the nucleus. d. Both contain chromos...
In this work the nucleolar activity at interphase and the meiotic cells of the testis in fi... MG Tavares,MTVD Azeredo-Oliveira - 《Cytobios》 被引量: 48发表: 1997年 C banding in polytene chromosomes of Simulium ornatipes and S. melatum (Diptera: Simuliidae). Polytene and mitotic ...
The Presence of Chromosomes Is Not Obligatory for Brain Function: Brain, Eye, Blood and Skin Cells Work Efficiently Without a NucleusDecrease in body size has occurred in many animal groups during evolution but is most evident in insects where their organs have suffered alterations at the the ...
The RacA protein has the propensity to bind the origin of the chromosomes and attach them to the cell poles [125]. Concomitantly, cell septum formation is altered by the overexpression of divisome machinery (FtsZ, FtsA) and disrupted MinCD localization in a σH-dependent manner to initiate ...
The study of cells from its basic structure to the functions of every cell organelle is called Cell Biology. Robert Hooke was the first Biologist who discovered cells. All organisms are made up of cells. They may be made up of a single cell (unicellular), or many cells (multicellular). ...
Apolipoprotein E4 (APOE4) is the strongest known genetic risk factor for late-onset Alzheimer’s disease (AD). Conditions of stress or injury induce APOE expression within neurons, but the role of neuronal APOE4 in AD pathogenesis is still unclear. Here
The first stage of mitosis, when the nuclear membrane breaks down and chromatin condenses into chromosomes is called ___. In the cell division, at which stage are the cellular components except the chromosomes replicated? The process by which a cell divides into two daughter ce...
According to Medline Plus, in every cell, humans possess 23 pairs of chromosomes, among which the sex chromosomes constitute one pair. The X chromosome, comprising roughly 155 million DNA base pairs, makes up around 5% of the total DNA incells. ...