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Anatomy and Physiology 1 final exam multiple choice Practice A & P 2024 Placement Exam I (answers on last page) 1. Which of the following is the correct order of complexity, going from least to most complex? a. Atom, molecule, organelle, cell, tissue, organ b. Organ, tissue, cell, organelle, atom, molecule c. Organ, tissue, cell, organelle, molecule, atom d. Molecule, atom, organ, tissue, cell, organelle e. Atom, molecule, organelle, cell, organ, tissue 2. Organelles are a. Cells b. Organisms c. A group of cells that serve a common function d. Compartments within cells e. Proteins
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c. Number of protons d. Ionic charge
24.Each element has a unique_________, which refers to the number of protons present in its atoms. a. Isotope b. Mass number c. Atomic number d. Radioisotope 25.A molecule is ________. a. A bonding together of two or more atoms b. Less stable that is constituent atoms separated c. Electrically charged d. A carrier of one or more extra neutrons 26.If lithium has an atomic number of 3, and an atomic mass of 7, it has________ neutron(s) in its nucleus. a. 1 b. 2 c. 3 d. 4 e. 7 27.Substances that are nonpolar and repelled by water are ________. a. Hydrolyzed b. Nonpolar c. Hydrophilic d. Hydrophobic 28.A hydrogen bond is _________. a. A sharing of a pair of electrons between a hydrogen nucleus and an oxygen nucleus b. A sharing of a pair of electrons between a hydrogen nucleus and either and oxygen or nitrogen nucleus c. Formed when an electronegative atom of a molecule weakly interacts with a hydrogen atom that is already participating in a polar covalent bond d. None of the above 29.An ionic bond is one in which ________. a. Electrons are shared equally b. Electrically neutral atoms have a mutual attraction c. Two charged atoms have a mutual attraction due to electron transfer or donation d. Electrons are shared unequally 30.A covalent is one in which a. Electrons are shared b. Electrically neutral atoms have a mutual attraction c. Two charged atoms have a mutual attraction due to electron transfer d. Electrons are lost 31.Lipids______. a. Include fats that are broken down into one fatty acid molecule and three glycerol molecules b. Are composed of monosaccharides c. Include triglycerides that serve as energy sources d. Include cartilage and chitin
40.The nucleolus is the site where a. The protein and RNA subunits of ribosomes are assembled b. The chromatin is formed c. Chromosomes are bound to the inside of the nuclear envelope d. Chromosomes duplicate themselves 41.The _________ is free of ribosomes and curves through the cytoplasm like connecting pipes; the main site of lipid synthesis. a. Lysosome b. Golgi body c. Smooth ER d. Rough ER 42.Mitochondria convert energy stored in __________ to forms that the cell can use, principally ATP. a. Water b. Carbon compounds c. NADPH 2 d. Carbon dioxide
48. Which of the following is not a form of active transport? a. Sodium-potassium pump b. Endocytosis c. Exocytosis d. Bulk flow 49.Which of the following is not a form of passive transport? a. Osmosis b. Passive transport c. Bulk flow d. Exocytosis 50.O 2 , CO 2 , H 2 O, and other small, electrically neutral molecules move across the cell membrane by________. a. Electric gradients b. Receptor-mediated endocytosis c. Passive transport d. Active transport