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Ch 3 Cells PF/SF
Question | Answer |
---|---|
cyt- | cell |
endo- | within |
hyper- | above |
hypo- | below |
inter- | between |
iso- | equal |
mit- | thread |
phag- | to eat |
pino- | to drink |
-som | body |
cytoplasm | the contents of a cell, excluding the nucleus and cell membrane |
cytosol | clear liquid in the cytoplasm. |
cytoskeleton | a cell's microscopic framework of protein filaments and tubules |
organelles | a part of a cell that performs a specialized function |
endoplasmic reticulum | organelle composed of a system of connected membranous tubules and vesicles along which protein is synthesized |
ribosomes | organelle composed of RNA and protein that is a structural support for protein synthesis and includes RNA molecules that function as enzymes |
golgi apparatus | an organelle that prepares cellular products for secretion |
mitochondria | organelle housing enzymes that catalyze the reactions of aerobic respiration |
lysosomes | organelle that contains digestive enzymes |
peroxisomes | a small organelle that is present in the cytoplasm of many cells and that contains the reducing enzyme catalase and usually some oxidases. |
centrosome | cellular organelle consisting of two centrioles |
cilia | microscopic, hairlike processes on the exposed surfaces of certain epithelial cells |
flagella | motile tail-like structure on sperm cell |
vesicle | membranous cytoplasmic sac formed by infolding of the cell membrane |
nucleolus | a small structure within the cell nucleus that contains RNA and proteins |
chromosome | rodlike structure that condenses from chromatin in a cell's nucleus during mitosis |
chromatin | DNA and complexed protein that condenses to form chromosomes during mitosis |
simple diffusion | Process by which molecules or ions scatter or spread spontaneously from regions where they are in higher concentrations toward regions where they are in lower concentrations. |
facilitated diffusion | diffusion in which carrier molecules or ion channels transport substances across membranes from a region of higher concentration to a region of lower concentration. |
osmosis | diffusion of water through a selectively permeable membrane in response to a concentration gradient. |
isotonic | a solution with the same osmotic pressure as the solution with which it is compared |
hypertonic | a solution with a greater osmotic pressure than the solution with which it is compared |
hypotonic | a solution with a lower osmotic pressure than the solution with which it is compared |
hydrostatic pressure | pressure exerted by fluids, such as blood pressure |
edema | fluid accumulation within tissue spaces |
active transport | process that requires energy to move a substance across a cell membrane, usually against the concentration gradient |
endocytosis | Process by which a cell membrane envelops a substance and draws it into the cell in a vesicle. |
exocytosis | Transport of substances out of a cell in membrane bounded vesicles. |
pinocytosis | Process by which a cell engulfs droplets of fluid from its surroundings. |
phagocytosis | Process by which a cell engulfs and digests solids. |
mitosis | Division of a somatic cell nucleus in the process of forming two genetically identical cells. |
meiosis | Cell division that halves the genetic material, resulting in egg and sperm cells |
gametogenesis | first part of meiosis; the formation of egg cells and sperm cells. |
cytokinesis | Division of cytoplasm. |
interphase of cell cycle | the phase of the cell cycle in which the cell spends the majority of its time and performs the majority of its purposes including preparation for cell division. |
prophase | Stage of mitosis when chromosomes become visible. |
metaphase | Stage in mitosis when chromosomes align in the middle of the cell. |
anaphase | Stage in mitosis when duplicate chromosomes move to opposite poles of cell. |
telophase | Stage in mitosis when newly formed cells separate. |
cell differentiation | Process by which a less specialized cell becomes a more specialized cell type. |
stem cell | An undifferentiated cell that can divide to yield two daughter stem cells, or a stem cell and a progenitor cell. |
progenitor cell | A daughter cell of a stem cell that is partially specialized. |
apoptosis | Programmed cell death. |
metastasis | the spread of a cancer from one organ or part to another non-adjacent organ or part. |
hyperplasia | Excess cell division in a tissue. |