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Cells Chapter 3
cells
Question | Answer |
---|---|
A structure that assembles ribosomes | Nucleolus |
A structure that assembles amino acids into proteins | Ribosomes |
A set of membranes involved in packaging proteins for export | Golgi apparatus |
A small sac like structure used to transport substances within the cell | Vesicle |
A membranous organelle that generates ATP | Mitochondrion |
A small sac like structure that degrades wast products | Lysosomes |
The site of DNA storage | Nucleus |
The process by which RNA is synthesized from the DNA | Transcription |
A building block of DNA and RNA | Nucleotide |
An important component of ribosomes | rRNA |
The structure that carries amino acids to the ribosomes | tRNA |
The nucleic acid that carries information from the nucleus to the ribosomes | mRNA |
The process by which amino acids are assembled into a protein | Translation |
The process by which one cell divides into two identical daughter cells | Mitosis |
The nuclear membrane reforms during this phase | Telophase |
Centrioles begin to form and chromosomes condense during this phase | Prophase |
The phase of mitosis when chromosomes are aligned in the middle to the cell | Metaphase |
DNA synthesis occurs during this phase | Interphase |
The chromosomes are being pulled apart in this phase | Anaphase |
The process that utilizes a carrier to move materials across the plasma membrane against the concentration gradient using ATP | Active transport |
The use of hydro static force to move fluids through a membrane | Filtration |
The process that utilizes a carrier to move materials across the plasma membrane in the direction of the concentration gradient | Facilitated diffusion |
A special form of diffusion that applies only to water | Osmosis |
The spread of molecules thought an area from high to low concentration. | Diffusion |
The process by which a cell takes in large particles | Endocytosis |
The process by which materials are expelled from the cell using vesicles | Exocytosis |
Small fluid droplets are brought into the cell using this method | Pinocytosis |
What are 6 risk factors for cancer? | Heredity, Chemicals, Ionizing radiation, Physical irritation, Diet, and Viruses |
Phag/o | to eat or ingest |
Pin/o | to drink |
-some | body |
lys/o | loosening, dissolving, separating |
cyt/o | cell |
hyper- | above, over, excessive |
hem/o | blood |
iso- | same, equal |
hypo- | deficient, below, beneath |
end/o | in, within |
Hypo-tonic | A low concentration of dissolved substances in water and therefore a high concentration of water in the extra cellular fluid. H2O will flow into the cell. |
Isotonic | Has the same amount of solute inside and outside of the cell . |
Hyper-tonic | A high concentration of dissolved substances in water and therefore a low concentration of water in the extra cellular fluid. H2O will flow out of the cell. |
Meiosis | Occurs in sex cells = Egg and Sperm, sex cells need to have 1/2 the number of chromosomes, 23 |
Mitosis | Occurs in the somatic cells and other body cells. Somatic cells have 46 chromosomes |
IPMAT | Interphase, Prophase, Metaphase, Anaphase, Telophase |
Interphase | The prep phase, DNA is replicated. G1 phase, G2 phase, G3 phase |
Prophase | Duplicated chromosomes condense, nuclear envelope dissolves, and centrioles divide and move to opposite ends of the cell, spindle fibers form |
Metaphase | Phase where Chromosomes line up at the equator of the cell |
Anaphase | Phases where the chromosomes begin to separate |
Telophase | Last phase of mitosis, chromosomes migrate to opposite ends of the cell, two new nuclear envelope form, and the chromosomes uncoil. Opposite of Prophase |
Plasma Membrane | Encloses cell contents, Bi-layer structure with phospholipids, Cholesterol (strengthens the membrane), and proteins float within the lipid bi-layer, selectively permeable |
Passive Transport | No energy is involved in moving a substance across the cell membrane, with the consternation gradient |
Active Transport | The movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy |