Bio 181 (Module 4: Self Check)questions & answers

Bio 181 (Module 4: Self Check)The actin filament system extends outside of the cell. - correct answer False Consider the geography of cells. Actin filaments are present in the cell's ___ and the microtubules are present in the cell's . - correct answer cell cortex - cell interior Chromosomes are made out of Euchromatin. - correct answer True To get into the nucleus a component has to have the correct signal sequence and pass through a nuclear pore. - correct answer True The actin filament system is present in the nucleus. - correct answer False Where is the histone H1 found? - correct answer It is the "staple" used to bind together other histones which make up the nucleosomal core Molecular motors use ATP as the energy source to power the molecular motors. - correct answer True Which cytoskeletal filament system lines the inside of the nucleus to protect it? - correct answer Intermediate filament system2 The diameter of an intermediate filament is 25 nm. - correct answer False What does the nucleosomal core have in it (i.e., the basket ball like structure on the slides)? - correct answer two H2A two H2B two H3 two H4 combined by one H1