STRAIGHTERLINE ANATOMY2024 ACTUAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+
What is the smallest level of organization in the body that contains the body's genetic
information?
• chemical
• cellular
• tissue
• organism - Answer b. cellular The cellular level includes the nucleus, an
organellethat contains the body's genetic information.
Which is an example of a normally occurring positive-feedback
mechanism? Select one:
• elevated blood pressure during exercise
• increase in heart rate after blood loss
• decrease in blood pressure after blood loss
• stretching of the uterus near the end of pregnancy - Answer d. stretching of
theuterus near the end of pregnancy
Which of the following processes generates the most ATP within a human cell?
Select one:
• glycolysis
• lactic acid fermentation
• oxidative phosphorylation
• citric acid cycle - Answer c. oxidative phosphorylation
During DNA replication, how does each template strand eventually become two
identical DNA molecules?
Select one:
• The two strands form continuously, catalyzed by DNA polymerase.
• The two strands form continuously, catalyzed by DNA ligase.
• One strand forms continuously, the other forms in short segments spliced by
DNApolymerase.
,• 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 bothform continuously.
Which is the most superficial layer of skin that is composed primarily of living cells?
Select one:
• stratum corneum
• stratum lucidum
• stratum basale spinosum.
• stratum spinosum - Answer .
d. stratum spinosum (stratum basale layer is below the stratum
spinosum)
Which of the following is the definition of a third degree burn?
Select one:
• a burn that covers at least 25% of the skin
• a burn that has destroyed the dermis and epidermis
• a burn that can only be caused by fire
• a burn that does not leave scars - Answer a burn that has destroyed the dermis
andepidermis. 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:
• cavity
• cleft
• hole
• 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
boneto be easily shattered?
Select one:
• cartilage
• collagen
• hydroxyapatite
• mineral - Answer b. Collagen is a component of the bone matrix that gives it
flexiblestrength so it is less brittle.
, Which of the following is the most widely distributed type of muscle in the body?
Select one:
• cardiac
• postural
• skeletal
• smooth - Answer d. smooth
Which sentence best describes the sliding filament model of muscle contraction?
Select one:
• Actin and myosin filaments remain stationary.
• Actin and myosin myofilaments shorten.
• Sarcomeres and myofibrils contract.
• Sarcomeres and myofibrils lengthen. - 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 was likely
damaged by trauma due to a large population of which type of cell?
Select one:
• Schwann cells
• microglia
• oligodendrocytes
• ependymal cells - Answer b. microglia
What type of axons is found in a gray ramus
comunicans? Select one:
• myelinated, pre-ganglionic axons
• myelinated, post-ganglionic axons
• unmyelinated, pre-ganglionic axons
• unmyelinated, post-ganglionic axons - Answer d. unmyelinated, post-
ganglionicaxons
Which class of chemical messengers is secreted by neurons into synaptic clefts to
activate an adjacent cell?
Select one:
• autocrine
• endocrine
• neurotransmitter
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+
What is the smallest level of organization in the body that contains the body's genetic
information?
• chemical
• cellular
• tissue
• organism - Answer b. cellular The cellular level includes the nucleus, an
organellethat contains the body's genetic information.
Which is an example of a normally occurring positive-feedback
mechanism? Select one:
• elevated blood pressure during exercise
• increase in heart rate after blood loss
• decrease in blood pressure after blood loss
• stretching of the uterus near the end of pregnancy - Answer d. stretching of
theuterus near the end of pregnancy
Which of the following processes generates the most ATP within a human cell?
Select one:
• glycolysis
• lactic acid fermentation
• oxidative phosphorylation
• citric acid cycle - Answer c. oxidative phosphorylation
During DNA replication, how does each template strand eventually become two
identical DNA molecules?
Select one:
• The two strands form continuously, catalyzed by DNA polymerase.
• The two strands form continuously, catalyzed by DNA ligase.
• One strand forms continuously, the other forms in short segments spliced by
DNApolymerase.
,• 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 bothform continuously.
Which is the most superficial layer of skin that is composed primarily of living cells?
Select one:
• stratum corneum
• stratum lucidum
• stratum basale spinosum.
• stratum spinosum - Answer .
d. stratum spinosum (stratum basale layer is below the stratum
spinosum)
Which of the following is the definition of a third degree burn?
Select one:
• a burn that covers at least 25% of the skin
• a burn that has destroyed the dermis and epidermis
• a burn that can only be caused by fire
• a burn that does not leave scars - Answer a burn that has destroyed the dermis
andepidermis. 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:
• cavity
• cleft
• hole
• 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
boneto be easily shattered?
Select one:
• cartilage
• collagen
• hydroxyapatite
• mineral - Answer b. Collagen is a component of the bone matrix that gives it
flexiblestrength so it is less brittle.
, Which of the following is the most widely distributed type of muscle in the body?
Select one:
• cardiac
• postural
• skeletal
• smooth - Answer d. smooth
Which sentence best describes the sliding filament model of muscle contraction?
Select one:
• Actin and myosin filaments remain stationary.
• Actin and myosin myofilaments shorten.
• Sarcomeres and myofibrils contract.
• Sarcomeres and myofibrils lengthen. - 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 was likely
damaged by trauma due to a large population of which type of cell?
Select one:
• Schwann cells
• microglia
• oligodendrocytes
• ependymal cells - Answer b. microglia
What type of axons is found in a gray ramus
comunicans? Select one:
• myelinated, pre-ganglionic axons
• myelinated, post-ganglionic axons
• unmyelinated, pre-ganglionic axons
• unmyelinated, post-ganglionic axons - Answer d. unmyelinated, post-
ganglionicaxons
Which class of chemical messengers is secreted by neurons into synaptic clefts to
activate an adjacent cell?
Select one:
• autocrine
• endocrine
• neurotransmitter
