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