chapter 1 science test
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| element | any substances that can not be broken down into simpler substance
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| atom | the smallest unit of an element
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| compound | two or more elements that are chemically combined
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| molecule | the smallest unit of most compounds
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| organic compound | a compound that contains carbon
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| inorganic compound | a compound that does not contain carbon
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| carbohydrates | energy-rich organic compounds, such as sugars and starches, that are made of the elements carbon, hydrogen, and oxygen
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| protein | large organic molecules made of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur
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| amino acid | small molecules that are linked together chemically to form proteins
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| enzyme | a type of protein that speeds up a chemical reaction in a living thing
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| lipid-energy | rich organic compounds, such as fats, oils, and waxes, that are made of carbon, hydrogen, and oxygen
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| nucleic acid | a very large organic molecule made of carbon, oxygen, hydrogen, nitrogen, and phosphorus, that contains instructions that cells need to carry out all the functions of life
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| dna | the genetic material that carries information about an organism and is passed from parent to offspring
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| rna | a nucleic acid that plays an important role in the production of proteins
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| cell | the basic unit if structure and function in a living thing
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| microscope | an instrument that makes small objects look larger
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| compound microscope | a light microscope that has more than one lens
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| cell theory | a widely accepted explanation of the relationships between cells and living things
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| magnification | the ability to make things look larger than they really are
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| convex lens | the ability to make thinigs look larger than they are
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| resolution | the ability to clearly distinguish the individual parts of an object
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| organelle | a tiny cell structure that carries out a specific function within the cell. some produce energy, build and transport needed materials, and store and recycle waste.
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| cell wall | a rigid layer of nonliving material that sorrounds the cells of plants and some other organisms. it is made of material called cellulose
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| cell membrane | a cell structure that controls which substances can enter or leave the cell
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| nucleus | a cell structure that contains nucleic acids, the chemical instructions that direct all the cell's activities
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| chromatin | material in cells that contain DNA and carries genetic information
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| cytoplasm | the region between the cell membrane and the nucleus; in organism without a nucleus, the region located inside the cell membrane.
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| mitochondrion | rod-shaped cell structures that produce most of the energy needed to carry out the cell's function
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| endoplasmic reticulum | a cell structure that form a maze of passageways in which proteins and other materials are carried from one part of the cell to another
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| ribosomes | a small grain-like structure in the cell cytoplasm of a cell where proteins are made
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| golgi body | a structure in a cell that recieves proteins and other newly formed materials from the endoplasmic reticulum, packages them, and distributes them to other parts of the cell
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| chloroplast | a structure in the cells of plants and some other organisms that capturesenergy from sunlight and uses it to produce food
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| vacuole | a water-filled sac inside a cell that acts as a storage area
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| lysosome | a small round cell structure that contains chemicals that break down large food particles into smaller ones
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| selectively permeable | a property of cell membranes that allows some substances to pass through, whle others cannot
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| diffusion | the process by which molecules move from an area of higher concentration to an area of lower concentration
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| osmosis | the diffusion of water molecules through a selectively permeable membrane
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| passive transport | the movement of materials through a cell membrane without using energy
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| active transport | the movement of materials through a cell memnbrane using energy
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
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