The gene that codes for the testis-determining factor (TDF) is found in or on the ________
A) fetal testes
B) gonadal ridges
C) Y chromosome
D) mesonephros
E) X chromosome
C
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If an E. coli bacterium were to have a protein with the correct amino acid sequence, but not the correct shape, which of the following is a logical explanation for what could be wrong?
A. The chaperone protein associated with protein folding is not functional. B. An error in transcription occurred. C. Peptide bonds were not able to form between the amino acids. D. The shape-coding region of the DNA sequence related to this protein is mutated.
This muscle, which is found in the neck, functions to elevate the hyoid bone and help press the tongue against the roof of the mouth during swallowing
a) mylohyoid b) sternothryroid c) sternocleidomastoid d) digastric e) masseter
In the bronchial tree, the lobar bronchi branch directly into
A. terminal bronchioles. B. bronchioles. C. segmental bronchi. D. secondary bronchi. E. primary bronchi.
The absence of iodine in the diet leads to ________
A) hypoparathyroidism B) hypoxemia C) hypocalcemia D) hypothyroidism E) hypoglycemia