BSC 2086 FINAL EXAM QUESTIOS WITH
100% CORRECT ANSWERS!!
1. Down syndrome (trisomy-21) results from ________.
A) nondisjunction
B) a teratogen
C) a mutagen
D) a sex-linked mutation
E) an autosomal recessive allele
A) nondisjunction
2. Your breathing rate is 12 breaths/minute; your tidal volume is 500 mL; your vital
capacity is 4700 mL; and your dead air space is 150 mL. Your alveolar ventilation rate is
________ mL/min.
A) 6,400
B) 5,600
C) 3,600
D) 4,200
E) 2,400
D) 4,200
3. The observation that there is a limit to how many times a cell can divide is the basis for
the ________ theory of senescence.
A) free radical
B) cross-linking
C) abortive
D) autoimmune
E) replicative
E) replicative
4. Blood banks dispose of blood that has low levels of bisphosphoglycerate. What would be
the probable reason for doing so?
,A) Erythrocytes low in BPG do not unload CO2 very well.
B) Erythrocytes low in BPG do not unload O2 very well.
C) A low BPG level causes acidosis of blood.
D) A decline in BPG level is accompanied by a decline in hemoglobin level.
E) Erythrocytes low in BPG do not load O2 very well.
B) Erythrocytes low in BPG do not unload O2 very well.
5. Which of these is most likely to result from contact between contaminated fingers and
the nasal mucosa?
A) Apnea
B) Acute bronchitis
C) Acute rhinitis
D) Asthma
E) Adult respiratory distress syndrome
C) Acute rhinitis
6. Each alveolus is surrounded by a web of blood capillaries supplied by the ________.
A) inferior vena cava
B) superior vena cava
C) pulmonary vein
D) pulmonary artery
E) aorta
D) pulmonary artery
7. Which of the following organ systems shows the greatest anatomical change in the
transitional period after birth?
A) Muscular system
B) Skeletal system
C) Integumentary system
D) Nervous system
E) Circulatory system
, E) Circulatory system
8. During birth, an infant is normally stimulated to breathe by ________.
A) being spanked by the doctor
B) an increased O2 level in the baby's new environment
C) prostaglandins
D) CO2 accumulating in the baby's blood
E) surfactant
D) CO2 accumulating in the baby's blood
9. Mesenchyme gives rise to ________.
A) muscle, bone, and blood
B) digestive organs and endocrine glands
C) nervous tissue
D) the integumentary system and exocrine glands
E) reproductive and urinary systems
A) muscle, bone, and blood
10. Which of the following lists the stages or structures of prenatal development in the
correct order?
A) Cleavage, zygote, morula, blastocyst, embryo, fetus
B) Zygote, embryo, morula, blastocyst, cleavage, fetus
C) Zygote, morula, blastocyst, cleavage, embryo, fetus
D) Zygote, cleavage, morula, blastocyst, embryo, fetus
E) Embryo, zygote, blastocyst, cleavage, morula, fetus
D) Zygote, cleavage, morula, blastocyst, embryo, fetus
31. Scuba divers breathe a nitrogen-oxygen mixture rather than pure compressed oxygen
in order to avoid what condition?
A) The bends
B) Caisson disease
C) Rapture of the deep
100% CORRECT ANSWERS!!
1. Down syndrome (trisomy-21) results from ________.
A) nondisjunction
B) a teratogen
C) a mutagen
D) a sex-linked mutation
E) an autosomal recessive allele
A) nondisjunction
2. Your breathing rate is 12 breaths/minute; your tidal volume is 500 mL; your vital
capacity is 4700 mL; and your dead air space is 150 mL. Your alveolar ventilation rate is
________ mL/min.
A) 6,400
B) 5,600
C) 3,600
D) 4,200
E) 2,400
D) 4,200
3. The observation that there is a limit to how many times a cell can divide is the basis for
the ________ theory of senescence.
A) free radical
B) cross-linking
C) abortive
D) autoimmune
E) replicative
E) replicative
4. Blood banks dispose of blood that has low levels of bisphosphoglycerate. What would be
the probable reason for doing so?
,A) Erythrocytes low in BPG do not unload CO2 very well.
B) Erythrocytes low in BPG do not unload O2 very well.
C) A low BPG level causes acidosis of blood.
D) A decline in BPG level is accompanied by a decline in hemoglobin level.
E) Erythrocytes low in BPG do not load O2 very well.
B) Erythrocytes low in BPG do not unload O2 very well.
5. Which of these is most likely to result from contact between contaminated fingers and
the nasal mucosa?
A) Apnea
B) Acute bronchitis
C) Acute rhinitis
D) Asthma
E) Adult respiratory distress syndrome
C) Acute rhinitis
6. Each alveolus is surrounded by a web of blood capillaries supplied by the ________.
A) inferior vena cava
B) superior vena cava
C) pulmonary vein
D) pulmonary artery
E) aorta
D) pulmonary artery
7. Which of the following organ systems shows the greatest anatomical change in the
transitional period after birth?
A) Muscular system
B) Skeletal system
C) Integumentary system
D) Nervous system
E) Circulatory system
, E) Circulatory system
8. During birth, an infant is normally stimulated to breathe by ________.
A) being spanked by the doctor
B) an increased O2 level in the baby's new environment
C) prostaglandins
D) CO2 accumulating in the baby's blood
E) surfactant
D) CO2 accumulating in the baby's blood
9. Mesenchyme gives rise to ________.
A) muscle, bone, and blood
B) digestive organs and endocrine glands
C) nervous tissue
D) the integumentary system and exocrine glands
E) reproductive and urinary systems
A) muscle, bone, and blood
10. Which of the following lists the stages or structures of prenatal development in the
correct order?
A) Cleavage, zygote, morula, blastocyst, embryo, fetus
B) Zygote, embryo, morula, blastocyst, cleavage, fetus
C) Zygote, morula, blastocyst, cleavage, embryo, fetus
D) Zygote, cleavage, morula, blastocyst, embryo, fetus
E) Embryo, zygote, blastocyst, cleavage, morula, fetus
D) Zygote, cleavage, morula, blastocyst, embryo, fetus
31. Scuba divers breathe a nitrogen-oxygen mixture rather than pure compressed oxygen
in order to avoid what condition?
A) The bends
B) Caisson disease
C) Rapture of the deep
