Answer Key
1 BI 112 – Cell Biology for Health Occupations Instructor: Waite Practice for Exam #1 – Answer Key 1) Which of the following statement is TRUE regarding anatomy and physiology? a) Anatomy and physiology ARE NOT related to each other. b) Anatomy can only be studied by viewing the large structures of the body. Microscopes would give no useful information. c) The study of physiology is limited to the organism level. Organs, tissues, and cells have no physiology to study. d) Anatomy looks at structure and form. Physiology looks at function. 2) TRUE or FALSE: It is not necessary to understand normal anatomy and physiology in order to understand how disease affects the body. a) True b) False 3) All of the statements below describe the kidney. Which choice refers to the anatomy of the kidney? a) An organ that produces a hormone that controls red blood cell production b) An organ that serves to balance body fluids and ions c) A bean-shaped organ with two functional regions known as the cortex and the medulla, both of which are surrounded by a tough, fibrous layer called the renal capsule d) An organ that extracts waste products from the blood and forms urine 4) Nerve cells combine to form nervous tissue, which then makes up the brain, which is a part of the central nervous system. The brain is an example of what level of organization? a) Organism b) Tissue c) Organ d) Cellular 5) In homeostasis, a feedback loop (positive or negative) ends when… a) The body adjusts to a new setpoint b) Homeostasis is restored c) The original stimulus ends or is controlled d) Both b & c 2 BI 112 – Cell Biology for Health Occupations Instructor: Waite Practice for Exam #1 – Answer Key Use the following diagram of homeostasis of water content of the body to answer questions 6-8. 6) The homeostatic system that the body uses to control water content of the body is a positive feedback system. a) True b) False 7) In the homeostatic system that the body uses to control water content of the body, the kidney acts as the… a) Receptor b) Control center c) Signal d) Effector e) Response 8) In the homeostatic system that the body uses to control water content of the body, ADH (antidiuretic hormone) acts as the… a) Receptor b) Control center c) Signal d) Effector e) Response 3 BI 112 – Cell Biology for Health Occupations Instructor: Waite Practice for Exam #1 – Answer Key 9) In a neutral atom, the number of protons will be the same as the number of… a) Neutrons b) Positrons c) Electrons 10) Different isotopes of the same element will have different… a) Numbers of protons b) Mass numbers c) Numbers of electrons d) Atomic orbitals 11) In a non-polar covalent bond… a) Shared electrons spend equal time with both bonded atoms b) Shared electrons spend more time with the more electronegative atom c) Electrons are transferred between bonded atoms 12) Chemical reactions in the body that begin with simpler reactants and build more complex products are termed… a) Catabolic reactions b) Synthesis reactions c) Anabolic reactions d) Exchange reactions e) More than one of the above answers is correct (b & c) 13) Atoms are most stable when… a) They have a charge b) They have 8 electrons in total c) Their valence (outermost) electron shell is full d) They have more electrons than neutrons 4 BI 112 – Cell Biology for Health Occupations Instructor: Waite Practice for Exam #1 – Answer Key 14) Cations form when… a) Atoms lose electrons b) Atoms gain protons c) Atoms gain electrons d) Atoms lose neutrons 15) Which is true of the following chemical notation: 4 CH3COOH a) There are 2 carbons, 4 hydrogens, and 2 oxygens b) There are 4 carbons, 12 hydrogens, and 4 oxygens c) There are 4 carbons, 12 hydrogens, and 8 oxygens d) There are 8 carbons, 16 hydrogens, and 8 oxygens
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