NAS 2 Final Exam (2023/2024 Update) | 100% Correct| More than 100 Questions and Verified Answers

NAS 2 Final Exam (2023/2024 Update) | 100% Correct| More than 100 Questions and Verified Answers QUESTION Enzymes are what type of organic or biological compound? Answer: protein QUESTION Which pH is more acidic? Answer: 3 QUESTION Fatty acids with single-bonded carbon chains as in fats are: Answer: saturated QUESTION What do the nucleic acids DNA and ATP have in common? Answer: both are nucleic acids QUESTION When an ionic bond forms, which part(s) of the atoms are directly involved? Answer: the outermost electrons QUESTION Which is associated with a synthesis reaction? Answer: complex (larger) molecules from simple (smaller) molecules QUESTION In a covalent bond: Answer: atoms share one or more pairs of electrons QUESTION Which parts of atoms can interact (react) to form chemical bonds? Answer: valence electrons QUESTION Kidneys play a major role in helping to maintain proper levels of Na+ and K+ ions in the body. If the kidneys fail to function properly, the possible consequences would be: Answer: solute imbalance in the body, blood becoming concentrated, impaired nerve impulse transmission QUESTION In the chemical level of organization atoms bond together to form: Answer: molecules QUESTION Which subatomic particles contribute to an atom's mass number but not its atomic number? Answer: neutrons QUESTION Atoms of oxygen have a total of 8 electrons. Are these atoms stable? Answer: No QUESTION The oxygen atoms in a molecule of oxygen gas (O2) are held together by ____________, where electrons are shared. Answer: a double covalent bond QUESTION Which is a monomer or building block of a protein? Answer: amino acid