Human Anatomy & Physiology Bio 251 Exam One Question and answers graded A

A cation is? A. a negatively charged ion B. a molecule that conducts electricity when placed in solution. C. an alteration in the three-dimensional structure of a protein D. a combination of atoms held together by chemical bonds. E. A positively charged ions. - Answer- E. A positively charged ions. A cell is? A. A group of atoms with similar structure and function B. The basic Structural unit of living organism C. A small structure within a molecule D. A structure composed of several tissues types. E. A group of organs with a common set of functions - Answer- B. The basic Structural unit of living organism A construction worker was injured when a metal rod penetrated his abdominal wall inferior to his umbilicus and in the hypogastric region. The rod passed through to the lumbar region. Which of the following structures was most likely damaged? A.urinary bladder B. Kidney C.Liver D. Stomach - Answer- A.urinary bladder A group of water molecules are held together by __________ bonds? A.Non-polar Covalent B. Polar Covalent C. Ionic D. savings E.Hydrogen - Answer- B. Polar Covalent A molecule is? A. A negatively charged ion. B. A combination of atoms held together by chemical bonds. C. A substance that conducts electricity when Placed in Solution D. A positively charged ion E. An alternation in the three-dimensional structure of a proteins - Answer- B. A combination of atoms held together by chemical bonds. A neutral atom contains? A. more electrons than protons B. the same number of electrons and protons. C. none of the choices are correct. D. more protons than electrons E. only Neutrons - Answer- B. the same number of electrons and protons. A neutral atom will become a cation if it? A. loses Protons B. Gains Electrons C.Loses Electrons D.Gains Neutrons E. Gains Protons - Answer- C. Loses Electrons A person lying with his/her face down is said to be in what position? A. Supine B. Anatomical C. Reverse D.Prone - Answer- B. Anatomical A term that means "toward the attached end of a limb" is __________? A. Proximal B. Medial C.Distal D. Lateral E. Superficial - Answer- C.Distal A tissue is a? A.Lower level of organization than a cell B. Structure contained with a cell C. Group of organs that performs specific functions. D.Structure that contains a group of organs E. Group of cells with similar structure and function - Answer- E. Group of cells with similar structure and function A vertical plane that separates the body into right and left portions is called a __________ plane? A. Sagittal B. Transverse C. Horizontal D. Frontal E. Coronal - Answer- A. Sagittal ATP? A. IS a sugar found in transfer RNA B. Stores Generic Information C.Serves as the energy currency of the cell D. Can store but cannot release energy in the cell E. Is a Nucleotide found in DNA - Answer- C.Serves as the energy currency of the cell Adjacent amino acids in a polypeptide chain are held together by __________ bonds? A. hydrogen B. Peptide C. Van der waals D. ionic E. high energy - Answer- B. Peptide All of the synthesis reactions in the body are called __________? A. Catabolism B. Anabolism C. Hydrolysis D. Dissociation E. Oxidation-Reduction - Answer- B. Anabolism An anatomical image created from sound waves is a/an __________? A. Radiography B. CT scan C. MRI D. Sonogram - Answer- D. Sonogram An atom has an atomic number of 19 and a mass number of 39. This atom will have __________ neutrons? A. 58 B. 30 C. 19 D.39 E. 20 - Answer- E. 20 Neutrons An example of a structure contained by the mediastinum is the __________? A. Lungs B. Brain C. Stomach D. Esophagus E. Sternum - Answer- D. Esophagus An increase in the number of cells is __________? A. Differentiation B. reproduction C. Growth D. Metabolism E. Organization - Answer- C. Growth An investigator who conducts an experiment to determine how changes in pH affect the function of enzymes on digestion is most likely to be a/an __________? A. Engineer B. Anatomist C. Physiologist D. histologist E. Neurologist - Answer- C. Physiologist