Biology 121 Final Exam questions with complete solution graded A+

What is the hierarchy of life from largest to smallest? - Biosphere-Ecosystem-Community-PopulationOrganism-Organ system-Organ-Tissue-Cells-Organelle-Molecule-Atom A current example of natural selection is - The bacteria that has become drug resistant The usual process for the scientific method is: - Observation-question-hypothesis-predictionexperiment-results-conclusion Starch is a reserve polysaccharide made up of _____ subunits - Gluclose Monosaccharides are to polysacharides as ______ are to _______ - Amino acids; proteins All organic molecules contain: - Carbon In polar covalent bonding, electrons are ______ ______ between two atoms - shared unequally I have an element alpha with an atomic number of 10 and I have another element beta with the same number of protons but has 3 more neutrons than alpha. What is the atomic number of beta? - 10 What organelles are involved in energy conversion? - Mitochondrion and chloroplast Two molecules contain the exact same elements but are arranged differently what is this called? - Isomer Why is one side of a water molecule practically negative while the other side is practically positive? - Uneven sharing of electron pairs occurs due to the strong pull of oxygen.