Lsu biology 1201 - Study guides, Class notes & Summaries

LSU Biology 1201 Exam 2 Chapter 7 solution update

LSU biology 1201 exam #1 course requirement trial exam solution

Centromeres - area of attachment between two sister chromatids Kinetochores - structures of proteins and specific sections of chromosomal DNA at the centromere; point of attachment for microtubules of the spindle Chromatids - two copies of duplicated chromosome Spindle apparatus - formed from microtubules extending from the two centromeres; as centrosomes move away from each other the microtubules lengthen Why are there checkpoints throughout the cell cycle? - stop and go ahead signals h...

LSU Biology 1201 Exam 2 complete questions and answers

Centromeres - ANSWER area of attachment between two sister chromatids Kinetochores - ANSWER structures of proteins and specific sections of chromosomal DNA at the centromere; point of attachment for microtubules of the spindle Chromatids - ANSWER two copies of duplicated chromosome Spindle apparatus - ANSWER formed from microtubules extending from the two centromeres; as centrosomes move away from each other the microtubules lengthen

LSU Biology 1201 Exam 2 Chapter 7 solution update

SJ Singer and G Nicolson - 1972- proposed that membrane proteins are dispersed, individually inserted into phospholipid bilayer with their hydrophilic regions protruding Fluid Mosaic Model - -behaves like liquid -contains numerous diff. types of proteins -not held in one place, constantly moving Proteins - embedded in the membrane need to have amino acids that interact with water/ repel water to be inside the membrane Membrane Fluidity - -membranes are locked in place -held together by h...

What makes up organisms? - ANSWER matter What is matter? - ANSWER anything that takes up space and has mass What is matter made up of? - ANSWER elements What is an element? - ANSWER a substance that cannot be broken down to other substances by chem reactions