Cell Homeostasis
Term referring to the maintenance of stable internal conditions in a cell or organism.
What is homeostasis?
Passive movement of particles from high to low concentration.
What is diffusion?
Formation of two diploid cells from one initial diploid cell.
What is mitosis?
Cell division that promotes genetic variation.
What is meiosis?
Longest portion of the cell cycle.
What is interphase?
Cell structure that controls the movement of materials into and out of a cell.
What is the plasma membrane?
The passive diffusion of water.
What is osmosis?
Division of the cytoplasm resulting in formation of two new cells.
What is cytokinesis?
Removal of a portion of a chromatid.
What is deletion?
Phase when mitosis or meiosis occurs.
What is the M phase?
Substance produced that help cells maintain a stable pH.
What is a buffer?
Movement of substances across a plasma membrane with the aid of a protein molecule embedded in the membrane.
What is facilitated diffusion?
Phase of mitosis when chromosomes line along the middle of the cell.
What is metaphase?
The exchange of genetic material between homologous chromosomes that is the source of variation.
What is crossing over?
Most metabolically active phase of the cell cycle. Production of RNA and new proteins.
What is the G1 or Growth 1 phase?
As solution where the concentration of solutes is the same inside and outside the cell.
What is isotonic?
Movement of molecules across a plasma membrane, against the concentration gradient, that requires cellular energy (ATP).
What is active transport?
Cytoskeletal threads that allow for the movement of chromosomes during cell division.
What are spindle fibers?
Failure of homologous chromosomes to separate properly during meiosis.
What is nondisjunction?
Phase of the cell cycle that occurs directly before cell division (M phase) begins.
What is the G2 phase?
The response of a cell that is placed in a hypotonic solution.
What is swell?
Reaction of a cell placed in a solution having a higher solute concentration than the cell.
What is the cell will shrink? (crenate?)
Portion of cell division when sister chromatids separate and move to opposite side of the cell.
What is anaphase?
When a segment of DNA disconnects and reconnects in the opposite nucleotide order during meiosis.
What is inversion?
Portion of the cell cycle when DNA is replicated.
What is the S-phase or synthesis phase?