5 Written Questions
5 Matching Questions
- membrane junction
- ribonucleic acid(RNA)
- active transport
- a single-stranded nucleic acid that contains the sugar ribose; acts in protein synthesis
- b Energy-requiring process that moves material across a cell membrane against a concentration difference or gradient
- c Cells are tightly bound, prevent fluids and most molecules from moving between cells. Useful in places such as the stomach and kidneys. types are desmosomes, tight junctions, and gap junctions
- d biological unit of hereditary information located in chromatin consisting of a specific nucleotide sequence in DNA (or RNA, in some viruses). that transmits hereditary information.
- e Anchoring junctions that prevents cells subjected to mechanical stress from being pulled apart; two adjacent cells are attached. formed from protein plaques in the the cell membranes linked by protein filaments
5 Multiple Choice Questions
- A solution in which the concentration of solutes is essentially equal to that of the cell which resides in the solution. examples interstitial fluid and intravenous solutions
- 3rd phase; the chromatids of each chromosome separate at the centromere and move in opposite poles of the spindle.
- A substance produced by a living organism that acts as a catalyst to bring about a specific chemical reaction
- nucleic acid found in all living cells: carries the organism's hereditary information.
- A tiny cell structure that carries out a specific function within the cell
5 True/False Questions
chromosome → A threadlike, gene-carrying structure found in the nucleus. consists of one very long DNA molecule and associated proteins.
metaphase → Second Stage of Cell division: Centromeres of duplicated chromosomes are aligned at plate. chromosomes become attached to spindle fibers
interphase → A the resting phase between two mitotic or meiotic divisions during which the cell grows, copies its DNA, and synthesizes proteins
cell division → Movement of molecules from an area of higher concentration to an area of lower concentration.
concentration gradient → a gradient in concentration of a solute that molecules move down and the greater the difference in concentration between the two areas, the faster diffusion occurs. It is An increase or decrease in the density of a chemical substance in an area., A difference in concentration between two areas.