Topic 17: Review and Final Exam. Questions and answers. Rated A

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Topic 17: Review and Final Exam. Questions and answers. Rated A Question 1 Complete Not graded Flag question Question text What is the smallest level of organization in the body that cont... ains the body’s genetic information? Select one: a. chemical b. cellular The cellular level includes the nucleus, an organelle that contains the body’s genetic information. c. tissue d. organism Feedback The correct answer is: cellular Question 2 Complete Not graded Flag question Question text Which is an example of a normally occurring positive-feedback mechanism? Select one: a. elevated blood pressure during exercise This is an example of negative feedback. b. increase in heart rate after blood loss c. decrease in blood pressure after blood loss d. stretching of the uterus near the end of pregnancy Feedback The correct answer is: stretching of the uterus near the end of pregnancy Question 3 Complete Not graded Flag question Question text Which of the following processes generates the most ATP within a human cell? Select one: a. glycolysis Glycolysis produces only 6 molecules of ATP. b. lactic acid fermentation c. oxidative phosphorylation d. citric acid cycle Feedback The correct answer is: oxidative phosphorylation Question 4 Complete Not graded Flag question Question text During DNA replication, how does each template strand eventually become two identical DNA molecules? Select one: a. The two strands form continuously, catalyzed by DNA polymerase. There is a leading strand and a lagging strand; they don’t both form continuously. b. The two strands form continuously, catalyzed by DNA ligase. c. One strand forms continuously, the other forms in short segments spliced by DNA polymerase. d. One strand forms continuously, the other forms in short segments spliced by DNA ligase. Feedback The correct answer is: One strand forms continuously, the other forms in short segments spliced by DNA ligase. Question 5 Complete Not graded Flag question Question text Which is the most superficial layer of skin that is composed primarily of living cells? Select one: a. stratum corneum This is the most superficial layer, but consists of mostly dead cells. b. stratum lucidum c. stratum basale d. stratum spinosum Feedback The correct answer is: stratum spinosum Question 6 Complete Not graded Flag question Question text Which of the following is the definition of a third degree burn? Select one: a. a burn that covers at least 25% of the skin b. a burn that has destroyed the dermis and epidermis This is the correct definition of a third-degree burn, which is the deepest type of burn. c. a burn that can only be caused by fire d. a burn that does not leave scars Feedback The correct answer is: a burn that has destroyed the dermis and epidermis Question 7 Complete Not graded Flag question Question text Which of the following types of openings in the skeletal system does a “sinus” describe? Select one: a. cavity A sinus is an air space within bone. b. cleft c. hole d. tunnel Feedback The correct answer is: cavity Question 8 Complete Not graded Flag question Question text Which of the following components of the bone matrix, when removed, allows the bone to be easily shattered? Select one: a. cartilage b. collagen c. hydroxyapatite d. mineral Minerals do make up part of the bone matrix, but if removed, it would allow the bone to be bent easily though not shattered. Feedback The correct answer is: collagen Question 9 Complete Not graded Flag question Question text Which of the following is the most widely distributed type of muscle in the body? Select one: a. cardiac b. postural c. skeletal Skeletal muscle is not as widely distributed as smooth muscle. [Show More]

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