Cells Unit Part 3: diffusion, osmosis & mitosis
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| the chemical formula for _____ is H2O (numbers are subscipts) | water
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| the chemical formula for _____ is CO2 (numbers are subscipts) | carbon dioxide
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| the chemical formula for _____ gas is O2 (numbers are subscipts) | oxygen
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| the symbol for the element oxygen is _____ | O
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| the symbol for the element hydrogen is _____ | H
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| the symbol for the element carbon is _____ | C
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| Diffusion allows necessary _____ to enter cells. | nutrients
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| The diffusion of water through a membrane. | osmosis
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| Particles will automatically move across a cell membrane if they are _____ enough. | small
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| Carbon dioxide is made of carbon and _____. | oxygen
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| This molecule (made of O and H) is necessary for cell functions. | water
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| Diffusion continues until the quantities/percentages are _____ on both sides of the membrane. | equal
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| The movement of particles from regions of higher density to regions of lower density. | diffusion
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| Diffusion allows _____ to exit cells. | wastes
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| A waste gas of cellular respiration is _____ dioxide. | carbon
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| During diffusion, particles move from areas of high concentration to areas of _____ concentration. | low
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| Materials go in and out of an organism's cell(s) through its cell _____. | membrane
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| This term describes a cell membrane meaning only certain substances can pass through (based on size). | semipermeable
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| If a cell is 83% water and the environment on the outside is 90% water, will water diffuse _____ the cell. | into
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| If a cell is 76% water, what is the total percentage of other materials (proteins, fats, etc.)? ___ % | 24
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| Cell division in eukaryotic cells is called _____. | mitosis
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| There are _____ phases of mitosis. | four
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| The structures in the nucleus made of DNA are called _____. | chromosomes
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| Cell A takes 6 hrs to divide. Cell B takes 8 hrs to divide. After 24 hrs, how many more copies of cell A would there be than cell B? | eight
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| In this phase of mitosis, chromosomes line up in the middle along the equator. | metaphase
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| In this phase of mitosis, the nuclear membrane dissolves and the chromosomes become more visible. | prophase
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| In this phase of mitosis, chromosomes separate and move to opposite sides of the cell. | anaphase
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| This is the resting phase of a cell. Chromosomes are copied when mitosis is about to occur. | interphase
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| In this phase of mitosis, a nuclear membrane reforms around each set of chromosomes and the cytoplasm pinches inward. | telophase
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| Human body cells have how many chromosomes? | 46
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| How many chromosomes did you inherit from your mom? | 23
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| How many chromosomes did you inherit from your dad? | 23
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| One reason for mitosis is to allow multicellular organisms to _____ (get larger in size). | grow
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| One reason for mitosis is to allow unicellular organisms to _____ (make more of their own kind). | reproduce
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| One reason for mitosis is to allow multicellular organisms to replace old, worn-out _____ cells. | dead
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| One reason for mitosis is to allow multicellular organisms to _____ injuries. | repair
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| If one side of a semipermeable membrane has 13 water molecules and the other side has 27, how many will be on each side when diffusion has stopped? | 20
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| How many steps are there in the cell cycle? | 6
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| This is the final step of the cell cycle when the cytoplasm completely separates into 2 new cells. | cytokinesis
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| If a cell is 90% water and the environment on the outside is 78% water, will water diffuse _____ the cell. | out of
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