Straighterline Anatomy Final, Straighterline
Anatomy & Physiology Exam 2024
What is the smallest level of organization in the body that contains the body's genetic
information?
a. chemical
b. cellular
c. tissue
d. organism -Answer-cellular The cellular level includes the nucleus, an organell...
Straighterline Anatomy Final, Straighterline Anatomy & Physiology Exam 2 024 What is the smallest level of organization in the body that contains the body's genetic information? a. chemical b. cellular c. tissue d. organism -Answer -cellular The cellular level includes the nucleus, an organelle that contains the body's genetic i nformation. Which is an example of a normally occurring positive -feedback mechanism? Select one: a. elevated blood pressure during exercise b. increase in heart rate after blood loss c. decrease in blood pressure after blood loss d. stretching of the ute rus near the end of pregnancy -Answer -d. stretching of the uterus near the end of pregnancy Which of the following processes generates the most ATP within a human cell? Select one: a. glycolysis b. lactic acid fermentation c. oxidative phosphorylation d. citric acid cycle -Answer -c. oxidative phosphorylation 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. 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. -Answer -d. One strand forms continuously, the other forms in short segments spliced by DNA ligase. There is a leading strand and a lagging strand; they don't both form continuously. Which is the most superficial layer of skin that is composed primari ly of living cells? Select one: a. stratum corneum b. stratum lucidum c. stratum basale spinosum. d. stratum spinosum -Answer -. d. stratum spinosum (stratum basale layer is below the stratum spinosum) Which of the following is the definition of a third de gree burn? Select one: a. a burn that covers at least 25% of the skin b. a burn that has destroyed the dermis and epidermis c. a burn that can only be caused by fire d. a burn that does not leave scars -Answer -a burn that has destroyed the dermis and epidermis. How much skin the burn covers does not definite which degree of burn it is. Which of the following types of openings in the skeletal system does a "sinus" describe? Select one: a. cavity b. cleft c. hole d. tunnel -Answer -a. cavity: a sinus is an air space within bone. 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 -Answer -b. Col lagen is a component of the bone matrix that gives it flexible strength so it is less brittle. Which of the following is the most widely distributed type of muscle in the body? Select one: a. cardiac b. postural c. skeletal d. smooth -Answer -d. smooth Which sentence best describes the sliding filament model of muscle contraction? Select one: a. Actin and myosin filaments remain stationary. b. Actin and myosin myofilaments shorten. c. Sarcomeres and myofibrils contract. d. Sarcomeres and myofibrils lengt hen. -Answer -c. Sarcomeres and myofibrils contract. The shortening of sarcomeres is responsible for contraction, and thus myofibrils (sarcomeres joined end to end) also shorten A doctor performing an autopsy on a patient concludes that part of the brain wa s likely damaged by trauma due to a large population of which type of cell? Select one: a. Schwann cells
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