Straighterline Anatomy and Physiology I – A&P 1 Final Exam – All Questions Correctly Answered (2025)

A&P 1 Final Exam, Straighterline Anatomy and
Physiology 1, Straighterline A&P 1 Cumulative
Final___Questions Correctly Answered


What is the smallest level of organization in the body that contains the body's genetic
information?

Select one:

a. chemical

b. cellular

c. tissue

d. organism (Correct Answer) - ✅✅ B. Cellular



The cellular level includes the nucleus, an organelle that contains the body's genetic
information.



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 uterus near the end of pregnancy (Correct 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 (Correct 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. (Correct Answer) - ✅✅ d. One strand forms continuously, the other forms in
short segments spliced by DNA ligase.



Which is the most superficial layer of skin that is composed primarily of living cells?

Select one:

a. stratum corneum

b. stratum lucidum

c. stratum basale

d. stratum spinosum (Correct Answer) - ✅✅ d. stratum spinosum



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

c. a burn that can only be caused by fire

d. a burn that does not leave scars (Correct Answer) - ✅✅ b. a burn that has destroyed
the dermis and epidermis



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 (Correct Answer) - ✅✅ a. cavity



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 (Correct Answer) - ✅✅ b. collagen



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 (Correct 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 lengthen. (Correct Answer) - ✅✅ c. Sarcomeres and
myofibrils contract.



doctor performing an autopsy on a patient concludes that part of the brain was likely
damaged by trauma due to a large population of which type of cell?

Select one:

a. Schwann cells

b. microglia

c. oligodendrocytes

d. ependymal cel (Correct Answer) - ✅✅ b. microglia



What type of axons is found in a gray ramus comunicans?

Select one:

a. myelinated, pre-ganglionic axons

b. myelinated, post-ganglionic axons

c. unmyelinated, pre-ganglionic axons