Introduction to Cells Crossword Puzzle

QUESTIONS LIST: tissue : in a multi-cellular organism, a group of cells working together, nucleus : the cell's control center, ribosomes : grain-shaped organelles that produce proteins, electrons : some microscopes use a beam of _ instead of light, cytoplasm : clear, gel-like fluid that fills the region between the cell membrane and the nucleus, organelles : tiny cell structures that carry out specific functions within a cell, lipids : cell membrane consists mostly of _ , organs : your brain, lungs and kidneys are examples of _ , chloroplast : makes food for cells using energy from the sun, carbohydrates : sugars and starches are _ , membrane : the cell _ controls which substances pass into and out of a cell, enzymes : a group of proteins knows as _ speed up chemical reactions in living things, osmosis : the diffusion of water molecules across a selectively permeable membrane, wall : a plant's cell _ helps protect and support the cell, active : _ transport is the movement of materials across a cell membrane using cell energy, mitochondria : the _ convert energy stored in food to energy the cell can use, system : organs working together are called an organ _ , diffusion : the process by which molecules move from an area of higher concentration to an area of lower concentration, cell : the basic unit of structure and function in living things, microscope : an instrument to make small objects appear larger, compound : two or more elements chemically combined, helix : the shape of dna is a double _ , proteins : transport _ "pick up" specific molecules and carry them across the membrane.