BIOL 1001 Chapter : Biology Chapter 9
Document Summary
Biology final study guide chapter 9 (deoxyribose), one of the four bases: adenine(a), thymine(t), guanine (g), or cytosine(c). The dna in a chromosome consists of two long strands of nucleotides wound around each other; called a double helix. The specific sequence of nucleotides in genes spells out the instructions for making the proteins of a cell. Cell cycle- repeating pattern of divide, growth, and possible differentiating. Stem cells- dc"s formed by the first few cell divisions of a fertilized egg. (i. e. heart, skin, intestines, brain, and bone marrow) 2 important characteristics: self-renewal and the ability to differeniate. When a stem cell divides, one of the dc"s remains a stem cell. Other cells capable of dividing- cells in the liver can only divide into more liver cells. Permanently differentiated cells- never divide again (most cells in the brain and heart) The eukaryotic chromosome consists of a linear dna double helix bound to proteins.
