Biology Chapter 3 Cell Structure and Function Notes Exam with Questions and Answers

Biology Chapter 3 Cell Structure and Function Notes Exam with Questions and Answers What structures are involved in protein production? ANSWER • Nucleus • Ribosomes • Endomembrane system What is the structure and function of the nucleus? ANSWER -Control center -Contains genes (DNA) -Bound by a nuclear membrane/envelope with many nuclear pores that allow for semi-permeability -Houses chromatin -Nucleolus contains ribosomal RNA What is chromatin? ANSWER DNA with associated proteins What is rRNA? ANSWER Ribosomal RNA What is the structure and function of ribosomes? ANSWER • Organelles made of rRNA and protein • Found bound to the endoplasmic reticulum and free floating in the cytoplasm • Sites of protein synthesis = "protein making factories" What is the endomembrane system? ANSWER • It is a series of membranes in which molecules are transported in the cell.