Bio-210 Anatomy and Physiology Final Exam 1 Test Bank

A structure that is composed of two or more tissue types that work together to perform specific functions forthe body is a(n) ________. Complex Tissue Organ System Organ Complex Cell - ANS-Organ ________ is the most abundant chemical substance in the body, accounting for 60% to 80% of body weight Oxygen Protein Water Hydrogen - ANS-Water Homeostasis is the condition in which the body maintains ________. The lowest possible energy usage. A relatively stable internal environment, within limits. A static state with no deviation from preset points. A dynamic state within an unlimited range, depending on circumstances. - ANS-A dynamic state within an unlimited range, depending on circumstances. Choose the following statement that is not completely correct regarding serous membranes. Serosa are very thin, double-layered structures Serous membranes are divided into parietal and visceral membranes with a virtual space between the two. Visceral pericardium covers the heart's outer surface, and parietal pericardium lines the heart's internal walls. Serous membranes secrete a watery lubricating fluid. - ANS-Visceral pericardium covers the heart's outer surface, and parietal pericardium lines the heart's internal walls. Place the following in correct sequence from simplest to most complex: 1. molecules 2. Atoms 3. Tissues 4. Cells 5. organs 1-2-3-4-5 2-1-4-3-5 2-1-3-4-5 1-2-4-3-5 - ANS-2-1-4-3-5 What is a vertical section through the body, dividing it into left and right, called? frontal regional sagittal transverse - ANS-sagittal The basic structural material of the body consists of ________. Carbohydrates. Lipids. Proteins. Nucleic acids. - ANS-Proteins The genetic information is coded in DNA by the ________. Regular alteration of sugar and phosphate molecules Sequence of the nucleotides Three-dimensional structure of the double helix Arrangement of the histones - ANS-Sequence of nucleotides A chemical reaction in which bonds are broken is usually associated with ________. The release of energy The consumption of energy A synthesis Forming a larger molecule - ANS-The release of energy ) The numbers listed represent the number of electrons in the first, second, and third energy levels, respectively. On this basis, which of the following is an unstable or reactive atom? 2, 8, 8 2, 8 2 2, 8, 1 - ANS-2,8,1 Which of the following would be regarded as an organic molecule? H2O NaCl NaOH CH4 - ANS-CH4 The four elements that make up about 96% of body matter are ________. carbon, oxygen, phosphorus, calcium nitrogen, hydrogen, calcium, sodium carbon, oxygen, hydrogen, nitrogen sodium, potassium, hydrogen, oxygen - ANS-carbon, oxygen, hydrogen, nitrogen If atom X has an atomic number of 74 it would have which of the following? 37 protons and 37 neutrons 37 electrons 74 protons 37 protons and 37 electrons 74 neutrons - ANS-74 protons Which bonds often bind different parts of a molecule into a specific three-dimensional shape? Carbon Hydrogen Oxygen Amino acid - ANS-Hydrogen Which vesicular transport process occurs primarily in some white blood cells and macrophages? Exocytosis Phagocytosis Pinocytosis Intracellular vesicular trafficking - ANS-Phagocytosis In certain kinds of muscle cells, calcium ions are stored in ________. the smooth ER the rough ER both smooth and rough ER the cytoplasm - ANS-the smooth ER The RNA responsible for carrying amino acids to ribosomes for protein formation is_______. rRNA Continues...