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Download Homeostasis and Transport Vocabulary Worksheet 1 Answers
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Homeostasis and Transport Vocabulary Worksheet 1 Answers Student Name: ____________________________________ Teacher Name: Richard Eckert Date: __________ Score: __________ Define these terms: Active Transport Process requiring energy for the movement of particles across a cell membrane against the concentration gradient. Cell Membrane A thin, flexible, semipermeable barrier around the cell which regulates what enters and leaves the cell. Diffusion The process when molecules tend to move from an area of high concentration to an area of low concentration. Endocytosis This is the process where cells engulf material from outside their cell membranes. Exocytosis This is the transport of material out of a cell by means of a sac or vesicle that first engulfs the material and then is extruded through an opening in the cell membrane. Match the term on the left with its definition on the right: G ATP A. This is a mechanism by which organisms maintain homeostasis when the level of one substance influences the level of another substance or the activity of an organ. J B. This is a chemical substance made by glands in the endocrine system that travel through the bloodstream and affects cells and tissues throughout the body. Concentration Gradient D Endoplasmic Reticulum C. These are complex proteins that speed up chemical reactions by lowering the amount of energy needed to get the reaction started. C Enzyme D. This is a membrane-bound organelle in eukaryotic cells that is the production and processing center of proteins and some lipids. I E. This is any functional structure within the confines of a cell; literally a. "small organ;" it usually has a membrane-based structure Facilitated Transport A Feedback Mechanism F. These are organelles that digest macromolecules. H Golgi Body G. This is the main energy storage and transfer molecule in the cell. B Hormone H. This organelle serves to process and package lipids and proteins in the cell. F Lysosome I. This is also known as facilitated diffusion, a process by which substances are transported across cell membranes by means of protein carrier molecules. E Organelle J. This is the unequal distribution of ions across a cell membrane.
