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BMMS Life Sci Chpt 4
Cell processes and energy
Term | Definition |
---|---|
heterotroph | an organism that cannot make its own food |
autotroph | an organism that makes its own food |
photosynthesis | the process by which a cell captures energy in sunlight and uses it to make food |
pigment | colored chemical compounds that absorb light |
stomata | small openings on the undersides of leaves allowing carbon dioxide to enter the plant |
chlorophyll | the main photosynthetic pigment in chloroplasts |
respiration | the process by which cells obtain energy from glucose |
fermentation | an energy-releasing process that does not require oxygen |
cell cycle | the regular sequence of growth and division that cells undergo |
replication | the cell makes an exact copy of the DNA in its nucleus |
interphase | the cell grows, makes a copy of its DNA, and prepares to divide into two cells |
mitosis | the cells nucleus divides into two new nuclei |
chromosomes | double-rod structures |
stem cells | cells that differentiate throughout life |
differentiation | the process by which cells change in structure and become capable of carrying out specialized functions |
cytokinesis | the final stage of the cell cycle where the cytoplasm divides and is distributed to each of the two new daughter cells |