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 |