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29 Cards in this Set
- Front
- Back
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Passive Transport |
Requires no energy (ATP) Osmosis, filtration. |
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Active transport |
Requires energy (ATP) diffusion & facilitated diffusion needed to move particles from LOWER concentration to HIGHER concentration against CG (ATP Needed) |
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Endocytosis |
Brings into the cell |
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Exocytosis |
Expel things from the cell |
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Transcytosis |
Enter the cell, pass through the cell, exit the cell. |
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Pinocytosis |
Entering the cell in liquid form |
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Phagocytosis |
Solid entering the cell (like bacteria) |
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Receptor-mediated cytosis |
Moves SPECIFIC things into the cell. |
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Mitosis |
NOT sex cells -results in two daughter cells with 46 chromosomes |
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Meiosis |
(Created me-) = SEX cells. - results in 23 chromosomes ea. - two results combine to give 46 chromosomes—our very first cell @ creation. |
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Stem cell |
Can yield two daughter cells like itself, or one daughter cell and one cell that is partially specialized |
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Progenitor cell |
A partially specialized cell, the daughter of a stem cell—but is intermediate btwn a stem cell & a fully differentiated cell. |
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Pluripotent cells |
Can be ALMOST anything, but can’t revert back to a simple stem cell. |
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Totipotent |
A stem cell that can be ANYTHING it wants to be, (including regenerate stem cells via two daughter cells) |
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Necrosis |
Cell death resulting from damage |
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Apoptosis |
Normal, programmed cell death |
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Interphase |
(G1, S, G2) Genetic material replicates in S Cell grows and maintains normal functions and contributions to internal environment. |
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What does mitosis do? |
Divides nucleus |
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Cytokinesis |
Divides cytoplasm |
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Karyokinesis |
During mitosis, when the nucleus divides |
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Mitosis phases in order |
PMAT- Prophase, metaphase, anaphase, telophase |
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Cell division is needed because it... |
Keeps even number of cells being created and destroyed. - normal cells only divide 40-60 times before apoptosis |
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Negative Feedback |
Effectors are activated to turn conditions back to normal, away from the deviation from the set point. Long term fix- insulin releasing |
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Positive Feedback |
Pos. FB mechanisms produce unstable conditions, that may not seem compatible with homeostasis. Short lived, very specific functions. Short term fix- Contractions during pregnancy. |
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Homeostatic Mechanisms |
Three components, work together to achieve and maintain homeostasis in the body. |
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Receptors |
The lookout. Provide information about specific conditions in the internal environment Can be as small as a cell, or a protein that is a part of a cell. |
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Control center (set point) |
Decision maker, decides what the body needs to maintain. |
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Effectors |
Take action. Muscles or glands that cause appropriate responses to return the body to its set point. (Homeostasis) |
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Polar molecules |
Molecules with uneven distribution of charges |
