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Topic 1: The Cell System

Name: ____________________

  Date: ____________________
In cells, a large oval organelle that contains the cell's genetic material in the form of DNA and controls many of the cell's activities.
A tiny cell structure that carries out a specific function within the cell.
The basic unit of structure and function in living things.
Rod-shaped organelles that convert energy in food molecules to energy the cell can use to carry out its functions.
The series of events in which a cell grows, prepares for division, and divides to form two daughter cells.
A property of cell membranes to pass across it, while other cannot.
The process by which a cell makes a copy of the DNA in its nucleus before cell division.
The diffusion of water molecules across a selectively permeable membrane.
The process by which the vacuole surrounding particles fuses with the cell membrane, forcing the contents out of the cell.
An instrument that makes small objects look larger.
An organelle in the cells of plants and some other organisms that captures energy from sunlight and changes it to an energy form that cells can use in making food.
A thin, flexible barrier that surrounds a cell and controls which substances pass into and out of a cell.
The first stage of the cell cycle that takes place before cell division occurs, during which a cell grows and makes a copy of its DNA.
A widely accepted explanation of the relationship between cells and living things.
The process by which the cell membrane takes particles into the cell by changing shape and engulfing the particles.
A sac-like organelle that stores water, food, and other materials.
A rigid supporting layer that surrounds the cells of plants and some other organisms.
The final stage of the cell cycle, in which the cell's cytoplasm divides, distributing the organelles into each of the two new daughter cells.
The process by which molecules move from an area of higher concentration to an area of lower concentration.
The second stage of the cell cycle, during which the cell's nucleus divides into two new nuclei and one set of DNA is distributed into each daughter cell.