UAB Biology 123 Exam 1 Study Guide fall 2024 graded A+

UAB Biology 123 Exam 1 Study Guide fall 2024 graded A+UAB Biology 123 Exam 1 Study Guide fall 2024 graded A+UAB Biology 123 Exam 1 Study Guide fall 2024 graded A+ Correct ordering of biological organization? - correct answers-1. Biosphere 2. Ecosystems 3. Communities 4. Populations 5. Organisms 6. Organs 7. Tissues 8. Cells 9. Organelles 10. Molecules Polar - correct answers-distribution of electrons between the covalently bonded atoms is not even Three tenets of cell theory - correct answers-1) All living organisms composed of one or more cells 2)Cell is the basic unit or structure and organization in organisms 3)Cells come from pre-existing cells covalent bond - correct answers-a chemical bond that involves the sharing of electron pairs between atoms hydrogen bond - correct answers-weak chemical bond formed when the slightly positive hydrogen atom of a polar covalent bond in one molecule is attracted to the slightly negative atom of a polar covalent bond in another molecule. ionic bond - correct answers-transfer of electrons, A chemical bond resulting from the attraction between oppositely charged ions. van der Waals forces - correct answers-the relatively weak attractive forces that are operative between neutral atoms and molecules and that arise because of the electric polarization induced in each of the particles A covalent bond is likely to be polar when - correct answers-one of the atoms sharing electrons is much more electronegative than the other atom DNA nucleotide - correct answers-Deoxyribose Sugar, Bases GCAT, and Phosphate Group RNA nucleotide - correct answers-Ribose Sugar, Bases GCAU, and Phosphate Group Triglycerides - correct answers-an energy-rich compound made up of a single molecule of glycerol and three molecules of fatty acid. Phospholipids - correct answers-a lipid consisting of a glycerol bound to two fatty acids and a phosphate group. Which element makes the greatest percentage of the human body mass? - correct answers-Ca- 1.5% Fe- <.05 I- <.05 O- 65% C- 18.5% 31^P compared to 32^P, what is the difference? - correct answers-One more neuron The particle negative charge in a molecule of water occurs because - correct answers-a hydrogen bond Water molecules are able to form hydrogen bonds with - correct answers-compounds that have polar covalent bonds. What is the pH of a solution with a hydroxyl ion [OH-] concentration of 1.0 x 10^-12 M? - correct answers-[H+] x 1 x 10^-12 =1 x 10^-14 [H+]= 1 x 10^-2 -log( 1 x 10^-2) = 2 If the cytoplasm of a cell is at pH 7, and the mitochondrial matrix is at pH 8, this means - correct answers-the concentration of H+ ions is tenfold higher in the cytoplasm than in the mitochondrial matrix. 12 and 13 on practice exam What functional group(s) shown above is (are) present in all amino acids? Which of the groups shown above is a functional group that helps stabilize proteins by forming covalent cross-links within or between protein molecule - correct answers-C and D E amino group - correct answers-Consists of a nitrogen atom bonded to two hydrogen atoms and to the carbon skeleton. carboxyl group - correct answers-A functional group present in organic acids and consisting of a single carbon atom double-bonded to an oxygen atom and also bonded to a hydroxyl group. A carbon skeleton is covalently bonded to both an amino group and a carboxyl group. When placed in water it - correct answers-It would function neither as a base and an acid Which of the following functional groups are not present on penicillin? - correct answers-Sulfhdryol and Amino Pharmaceutical companies are selling billions of dollars' worth of single-enantiomer drugs. Why might it be important to use only one form of an enantiomer? - correct answers-One enantiomer may provide an effective treatment whereas the other may be ineffective or even toxic kinetic energy - correct answers-the energy an object has due to its motion potential energy - correct answers-stored energy that results from the position or shape of an object Biology - correct answers-the scientific study of life Science - correct answers-A way of learning about the natural world Redictionism - correct answers-understanding processes by understanding each part population - correct answers-natural selection, evolution Eukaryotic - correct answers-Humans have them, contain a nucleus Perokaryotic - correct answers-DNA is not contained in a membrane. Not in specific units of a cell 3 domians of lif