1
Physio Lecture Exam 1 Homework
Questions and Answers (100%
Correct Answers) Already Graded A+
A patient presents with all the symptoms of hypothyroidism.
Blood tests show elevated plasma TRH but depressed plasma
© 2026 Assignment
TSH and TH. The etiology (source of the problem) is the____,
which is _____.
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A. hypothalamus
Expert
B. thyroid
C. adenohypophysis
D. oversecreting
E. undersecreting Ans: C. adenohypophysis
E. undersecreting
The reason plasma TRH levels are elevated, in the question
above, is ___the TRH-secreting gland.
a) failure of positive feedback mechanisms to stimulate
b) overstimulation by positive feedback mechanisms of
c) failure of negative feedback mechanisms to inhibit
, 2
d) overinhibition by negative feedback mechanisms of Ans: c)
failure of negative feedback mechanisms to inhibit
Graves Disease is autoimmune; antibodies stimulate the
thyroid gland. In this case, we'd expect
a) elevated TH, elevated TSH, elevated TRH
b) elevated TH, depressed TSH, depressed TRH
© 2026 Assignment
c) depressed TH, elevated TSH, elevated TRH
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d) depressed TH, depressed TSH, elevated TRH
Expert
e) none of the above Ans: b) elevated TH, depressed TSH,
depressed TRH
Cooley's anemia Ans: Thalassemia
megaloblastosis Ans: Pernicious Anemia
gastric atrophy Ans: Pernicious Anemia
failure to make one type of globin chain Ans: Thalassemia
hereditary, genetic defect Ans: Thalassemia, Sickle Cell
anemia
erythropoietic failure Ans: aplastic anemia
RNA Ans: Uracil
also known as T4 Ans: thyroxine
, 3
DNA nucleotide Ans: thymidine
amino acid Ans: Tyrosine
colloidal protein, storage molecule Ans: Thyroglobulin
HbF has an oxygen affinity that is ____ that of HbA. In the
absence of any globin chains, heme's affinity for
oxygen would be excessively____.
© 2026 Assignment
a) Less than, high
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Expert
b) Less than, low
c) Higher than, high
d) Higher than, low Ans: c) Higher than, high
The cellular role of vitamins is to
a) act as cofactors
b) act as apoenzymes
c) act as coenzymes
d) act as substates for enzyme reactions
e) provide cellular metabolic energy Ans: c) act as coenzymes
Which of the following statements is true?
, 4
a) Persons with malaria are unable to inherit sickle
cell traits.
b) Persons with sickle cell disease are immune to
malaria.
c) Persons with malaria are resistant to sickle cell
© 2026 Assignment
disease.
Guru01 - Stuvia
d) Persons with sickle cell trait are resistant to malaria. Ans:
Expert
d) Persons with sickle cell trait are resistant to malaria.
The event that triggers erythrocyte sickling in HbS is
a) Reproduction of parasite within the erythrocyte
b) Low oxygen pressure at the erythrocyte
c) Contraction of malaria
d) Being bitten by the mosquito
e) Parasite entering the erythrocyte Ans: b) Low oxygen
pressure at the erythrocyte
Which one of the following statements about the reticulocyte
is false?
a) It is an erythrocyte precursor
Physio Lecture Exam 1 Homework
Questions and Answers (100%
Correct Answers) Already Graded A+
A patient presents with all the symptoms of hypothyroidism.
Blood tests show elevated plasma TRH but depressed plasma
© 2026 Assignment
TSH and TH. The etiology (source of the problem) is the____,
which is _____.
Guru01 - Stuvia
A. hypothalamus
Expert
B. thyroid
C. adenohypophysis
D. oversecreting
E. undersecreting Ans: C. adenohypophysis
E. undersecreting
The reason plasma TRH levels are elevated, in the question
above, is ___the TRH-secreting gland.
a) failure of positive feedback mechanisms to stimulate
b) overstimulation by positive feedback mechanisms of
c) failure of negative feedback mechanisms to inhibit
, 2
d) overinhibition by negative feedback mechanisms of Ans: c)
failure of negative feedback mechanisms to inhibit
Graves Disease is autoimmune; antibodies stimulate the
thyroid gland. In this case, we'd expect
a) elevated TH, elevated TSH, elevated TRH
b) elevated TH, depressed TSH, depressed TRH
© 2026 Assignment
c) depressed TH, elevated TSH, elevated TRH
Guru01 - Stuvia
d) depressed TH, depressed TSH, elevated TRH
Expert
e) none of the above Ans: b) elevated TH, depressed TSH,
depressed TRH
Cooley's anemia Ans: Thalassemia
megaloblastosis Ans: Pernicious Anemia
gastric atrophy Ans: Pernicious Anemia
failure to make one type of globin chain Ans: Thalassemia
hereditary, genetic defect Ans: Thalassemia, Sickle Cell
anemia
erythropoietic failure Ans: aplastic anemia
RNA Ans: Uracil
also known as T4 Ans: thyroxine
, 3
DNA nucleotide Ans: thymidine
amino acid Ans: Tyrosine
colloidal protein, storage molecule Ans: Thyroglobulin
HbF has an oxygen affinity that is ____ that of HbA. In the
absence of any globin chains, heme's affinity for
oxygen would be excessively____.
© 2026 Assignment
a) Less than, high
Guru01 - Stuvia
Expert
b) Less than, low
c) Higher than, high
d) Higher than, low Ans: c) Higher than, high
The cellular role of vitamins is to
a) act as cofactors
b) act as apoenzymes
c) act as coenzymes
d) act as substates for enzyme reactions
e) provide cellular metabolic energy Ans: c) act as coenzymes
Which of the following statements is true?
, 4
a) Persons with malaria are unable to inherit sickle
cell traits.
b) Persons with sickle cell disease are immune to
malaria.
c) Persons with malaria are resistant to sickle cell
© 2026 Assignment
disease.
Guru01 - Stuvia
d) Persons with sickle cell trait are resistant to malaria. Ans:
Expert
d) Persons with sickle cell trait are resistant to malaria.
The event that triggers erythrocyte sickling in HbS is
a) Reproduction of parasite within the erythrocyte
b) Low oxygen pressure at the erythrocyte
c) Contraction of malaria
d) Being bitten by the mosquito
e) Parasite entering the erythrocyte Ans: b) Low oxygen
pressure at the erythrocyte
Which one of the following statements about the reticulocyte
is false?
a) It is an erythrocyte precursor
