| A | B |
| the smallest living part of an organism is a | cell |
| the outside part of a cell that holds it together and allows substances to pass in and out of the cell | cell membrane |
| the function of the cell wall | to give the cell shape |
| chloroplasts are found | only in plant cells |
| chloroplasts contain | chlorophyll |
| a substance that helps green plants store solar energy to make its own food | chlorophyll |
| chromosomes carry | genes |
| carries the code for all of the cell's traits | genes |
| the liquid part of the cell | cytoplasm |
| cytoplasm is found in | plant and animal cells |
| helps release energy from food | mitochondria |
| the function of the nucleus | controls cell |
| allows substances to pass in and out of the nucleus | nuclear membrane |
| the function of the vacuoles | store food |
| the nuclear membrane allows substances to pass in and out of the | nucleus |
| animal cells do not have | chloroplasts and cell walls |
| one of the first scientists to see cells | Robert Hooke |
| plant cells are normally box-like or rigid because | they have a cell wall |
| it is difficult to see the nucleus in many cells in a science classroom because | microscopes are not powerful enough |
| male chromosomes, if viewed under a microscope would look like | XXXY |
| If viewed under a microscope, a female chromosome would look like | XXXX |
| animal cells have | cell membranes, nucleus, and cytoplasm |
| plant cells have | chloroplasts, cell walls, nucleus, cell membranes, and cytoplasm |
| a green, oval shaped structure in a plant cell | chloroplast |
| the center part of a cell that control the cell | nucleus |
| the part of a plant cell that is found under the cell membrane and gives the cell its box-like shape | cell wall |
| the part of the cell that is located on the outside of a cell | cell membrane |