6th Science Chapter 1

The structure that surrounds and encloses a cell and controls the movement of substances into and out of the cell.

A theory that states that cells are the basic units of structure and function of all living things.

The process in cells in which oxygen is used to release stored energy by breaking down sugar molecules.

A tiny green organelle that contains chlorophyll and is found in plant cells and some protist cells.

A threadlike structure in the nucleus of a cell; it carries the genes that determine the traits an offspring inherits from its parent or parents.

The watery gel inside a cell.

A chemical change in which an organism breaks down sugar to produce carbon dioxide and alcohol or lactic acid.

Cell organelles in which energy is released from food.

The development of cells into different and specialized cell types.

The structure that surrounds and encloses the nucleus and controls what substances move into and out of the nucleus.

A group of organs that work together to perform one or more functions.

The process by which green plants and other producers use light energy to make food.

A group of similar, specialized cells working together to carry out the same function.

The basic unit that makes up all living things.

The rigid structure surrounding the cells of plants, monerans, and some protists.

The tendency of substances to move from an area of greater concentration to an area of lesser concentration.

The process in which one cell divides to form two identical new cells.

The control center of a cell.

A part of an multicellular organism made up of a group of tissues that work together to perform a certain function.

The diffusion of water through a membrane.

A structure in the cytoplasm in which food and other substances are stored.

A plant cell has all the parts of a cell and animal cell doesn't have cell walls or chloroplasts.

microscope

osmosis

Carbon dioxide + water with light makes sugar + oxygen

Sugar + oxygen makes carbon dioxide + water + energy

They both produce energy

Instead of using oxygen, some cells use sugar

• Stage 1 = Chromosomes aren't visible. Each chromosome makes a copy of itself.
• Stage 2 = Chromosomes become shorter, thicker and visible. Chromosome copies fasten together. Long fibers attach to the chromosomes. The nuclear membrane disintegrates.
• Stage 3 = Doubled chromosomes line up along the cell center.
• Stage 4 = The doubled chromosomes are pulled to opposite ends of the cell.
• Stage 5 = Chromosomes become hard to see. The cell splits and new nuclear membranes form.

Mitosis is helpful because it creates all the cells in our body that we need.

If there was only type of cell, then there wouldn't be plants, animals, and humans because everything would be the same.

Tissues protect your insides. Tissues are your skin. They also can help you move. Carries information to different parts of your body.

In the digestive system there is a stomach.