Identify the ventricle of the heart that pumps oxygendepleted blood and the arteries of the body that carry oxygen-depleted blood.
BSC2010 General Biology 1 Chapter 10 Binary fission: bacteria uses binary fission to divide. • OriC: origin of replication for bacteria. Replication occurs in both directions (bidirectional replication) • FtsZ: proteins that help form the septum in binary fission • Tubulin: protein that is part of the microtubules • Nucleosomes: DNA wrapped around a core of 8 histone proteins. • Chromosomes are very long and must be condensed to fit within the nucleus. • Nucleosomes are spaced 200 nucleotides apart along the DNA • Further coiling results in the creation of a 30-nm fiber or solenoid o Further compacted: radial loops are held in place by scaffold proteins o Scaffold proteins is aided by a complex of proteins called condensin • Ploidy: for humans and many other species, the total number of chromosomes in a cell is called the diploid (2n) number, which is twice the haploid number. • For humans, the haploid number is 23 and the diploid number is 46. • Diploid number reflects the equal genetic contribution that each parent makes to the offspring. (N=23, 2n=46) Eukaryotic chromosomes: • replicated chromosomes are connected to each other at their kinetochores. • Cohesin: complex of proteins holding replicated chromosomes together • Sister chromatids: 2 copies of the chromosome within the replicated chromosome • Metacentric: centromere is in middle of chromosome • Acrocentric: centromere is at the top of the chromosome • Telocentric: centromere is at the end o