Human Biology Cell Structure and Function Study Guide Questions And Answers

Active Transport - Answer Uses energy to move molecules against their concentration gradient. Adhering Junctions - Answer An intercellular junction that allows stretching of animal tissues. Carrier Protein - Answer Membrane protein which alters shape to move glucose or amino acids across. Cell - Answer Smallest Unit of life. Cell Membrane - Answer Surrounds the outside of cells & controls what enters and leaves. Cell Theory - Answer Idea that all living things are made of cells. Cell Volume - Answer This grows faster than the surface area of a cell. Cellular Respiration - Answer Metabolic pathway which breaks down sugar for ATP energy for cell. Channel Protein - Answer Membrane protein which allows small polar molecules or ions to cross. Cholesterol - Answer Steroid membrane lipid used to stiffen membrane and decrease permeability Chromatin - Answer Uncoiled chromosomes in the nucleus of non-dividing cells.