PSB-228 Practice Questions with Complete Solutions

PSB-228 Practice Questions with Complete Solutions What is the name for any substance that stimulates the production of antibodies? - CORRECT ANSWER antigen What is the correct cellular hierarchy from the simplest to the most complex structure? - CORRECT ANSWER cell tissue organ organ system organism If a cell is placed in a hypertonic solution, what will happen to the cell? - CORRECT ANSWER It will shrink. What are major parts and organs that make up the immune system? - CORRECT ANSWER lymphatic system spleen tonsils thymus bone marrow The rate of a chemical reaction depends on all the following except? a. temperature b. surface area c. presence of catalysts d. amount of mass lost - CORRECT ANSWER amount of mass loss For a given mass and constant temperature, an inverse relationship exists between the volume and pressure of a gas - CORRECT ANSWER Boyle's Law Compare prokaryotic and eukaryotic cells - CORRECT ANSWER Prokaryotic cells don't contain membrane-bound organelles, eukaryotic cells do What is the role of ribosomes? - CORRECT ANSWER make proteins If an organism is AaBb, what combinations in the gametes is impossible? - CORRECT ANSWER aa What is the oxidation number of hydrogen in CaH2? - CORRECT ANSWER -1 Which hormone stimulates milk production in the breast during lactation? - CORRECT ANSWER prolactin What is the typical result of mitosis in humans? - CORRECT ANSWER 2 diploid cells Which of the following does not exist as a diatomic molecule? a. boron ine n gen - CORRECT ANSWER boron What structure has the lowest blood pressure? - CORRECT ANSWER vein How does water affect the temperature of a living thing? - CORRECT ANSWER Water keeps temp stable What is another name for aqueous HI? - CORRECT ANSWER hydriodic acid What heart chamber is the most muscular? - CORRECT ANSWER left ventricle Which of the following is NOT a product of the Krebs cycle? A.carbon dioxide B.oxygen C.adenosine triphosphate (ATP) D.energy carriers - CORRECT ANSWER oxygen What is the name for the reactant that's entirely consumed by the reaction? - CORRECT ANSWER limiting reactant Which part of the brain interprets sensory information? - CORRECT ANSWER cerebrum What kind of bond connects sugar and phosphate in DNA? - CORRECT ANSWER covalent What is the mass (in grams) of 7.35 mol water? - CORRECT ANSWER 132g Which of the following proteins is produced by cartilage? gen gen n - CORRECT ANSWER collagen How are lipids different than other organic molecules? - CORRECT ANSWER They are not water soluble.