PURDUE BIO 111 EXAM 1 2024 WITH 100% CORRECT ANSWERS

Which process describes cell division in prokaryotic organisms?Answer - binary fission What is the term used to describe about 150 nucleotides of DNA wrapped around a core of histone proteins?Answer - nucleosome Meiotic cell division plays a key role in which biological processes?Answer - sexual reproduction During the G1 phase of the cell cycle, most of the DNA would be in what state of compaction?Answer - 30-nm fiber During telophase of mitosis, how many DNA double helices make up a single chromosome?Answer - one A cell starts with 40 chromosomes (20 homologous pairs). After DNA replication how many chromosomes does that cell have?Answer - 40 (homologous pairs) Catenins are proteins that link one cell to another into unified tissues. Loss of function mutations to catenins cause loss of contact inhibition. Normally functioning catenins are best catergorized as what type of protein?Answer - tumor supressor genes During which phase of the cell cycle does the nuclear envelope reassemble?Answer - Telophase Disruption of the signaling of growth factors will directly affect which of the cell cycle check points?Answer - G1 Which of the following conditions is required to proceed from metaphase to anaphase?Answer - seperase is active