Cell Structure and Function Test Exam Questions And Answers

Cell Structure and Function Test Exam Questions And Answers Cell - The basic unit of life Cell membrane - Thin, double-layered sheet around the cell Cell wall - Strong layer around the cell membrane that protects the cell Nucleus - Large structure that contains the cell's genetic information Cytoplasm - Portion of the cell outside the nucleus Prokaryote - Organism whose cells do not contain a nucleus Eukaryote - Organism whose cell contains a nucleus Organelle - Specialized structures within a cell that perform important functions Chromatin - Granular material visible within the nucleus Nucleolus - The small dense region in the nucleus where the assembly of ribosomes begins is called the ___ Microtubules - The hollow tubes of protein that help maintain the shape of the cell are called ___ Chloroplasts - Which organelles can use energy from sunlight to create energy-rich food molecules? An organ system - The fourth, and highest, level of organization in a multicellular organism is ___ Chromosomes - The distinct, thread-like structures that contain the genetic information of the cell are called ____ Selectively permeable - When some substances can pass across the cell membrane but others can't, the biological membranes are said to be ___ ___ living things - All ___ ____ are composed of cells. Structure, function - Cells are the basic units of _____ and ______ in all organisms. Pre-existing cells - New cells are produced from _______ ___.