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Unit 1 Cells and Life Processes
Terms in this set (40)
A pure substance that cannot be broken down into other substances by chemical or physical means.
The basic particle from which all elements are made; the smallest particle of an element that has the properties of that element.
A substance made of two or more elements chemically combined in a specific ratio, or proportion.
A neutral group of two or more atoms held together by covalent bonds.
Deoxyribonucleic acid; the genetic material that carries information about an organism and is passed from parent to offspring.
The basic unit of structure and function in living things.
Made of a single cell.
Consisting of many cells.
A group of similar cells that perform a specific function.
A body structure that is composed of different kinds of tissues that work together.
A group of organs that work together, performing major functions.
A living thing.
An instrument that makes small objects look larger
A widely accepted explanation of the relationship between cells and living things.
The degree to which you see the details of the object's structure clearly.
Uses a beam of electrons instead of light to produce a magnified image; allow higher magnification and better resolution than light microscopes
an instrument that magnifies an image using two lenses at once
A lens that has the center that is thicker than its edge causing magnification when the light passes through the lens into your eye.
The condition in which an organism's internal environment is kept stable in spite of changes in the external environment
A thin, flexible barrier that surrounds a cell and controls which substances pass into and out of a cell
The process by which molecules move from an area of higher concentration to an area of lower concentration
The process in which oxygen and glucose undergo a complex series of chemical reactions inside cells, releasin energy
A process in which one cell splits into two new cells that are genetically identical to the original cell
The process by which plants and other autotrophs capture and use light energy to make food from carbon dioxide and water.
A rigid supporting layer that surrounds the cells of plants and some other organisms.
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 small grain-shaped organelle in the cytoplasm of a cell that produces proteins.
The thick fluid region of a cell located inside the cell membrane (in prokaryotes) or between the cell membrane and nucleus (in eukaryotes).
Rod-shaped organelles that conver energy in food molecules to energy the cell can use to carry out its functions.
An organelle that forms a maze of passageways in which proteins and other materials are carried from one part of the cell to another.
An organelle in a cell that receives proteins and other newly fromed materials from the endoplasmic reticulum, packages them, and distributes them to other parts of the cell.
A sac-like organelle that stores water, food, and other materials.
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 cell organelle which contains chemicals that break down large food particles into smaller ones and that can be used by the rest of the cell.
The regular sequence of growth and division that cells undergo
The first stage of the cell cycle before division when the cell grows, makes a copy of its DNA, and prepares to divide into new cells
the process in which a cell makes an exact copy of DNA in its nucleus
threadlike structures within the nucleus made of DNA and proteins
the second stage of Mitosis in which the cell's nucleus divides into two new nuclei and one set of DNA is distributed into each daughter cell
The final state of the cell cycle in which the cytoplasm divides and structures are distributed into each of the two new cells.
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