Examine the pedigree in the figure above, where individuals that have the genetic condition being
tested are marked with filled squares or circles. Which of the following inheritance patterns is most
likely correct for this condition?
a. autosomal dominant
b. X-linked recessive
c. X-linked dominant
d. cytoplasmic inheritance
e. autosomal recessive
D
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The energy expenditure of a mammal at rest, in the postabsorptive state, and at a standard temperature is referred to as its
A. basal metabolic rate. B. standardized metabolic rate. C. baseline metabolic rate. D. activated metabolic rate. E. total metabolic rate.
A ribozyme is
A) an RNA-protein complex that cleaves DNA. B) an enzyme that catalyzes the assembly of ribosomes. C) an RNA that can catalyze a specific chemical reaction. D) a stretch of uracil in RNA that directs splicing.
Chloroplasts and mitochondria share something with the nucleus that the other organelles do not. What is this shared characteristic?
A) They are the only organelles wrapped in a lipid-based membrane. B) They are the only organelles that produce ATP. C) They are the only organelles that contain DNA. D) They are the only organelles not found in bacteria.
Production of the iron-storing protein ferritin is regulated by aconitase, which binds to a 30-nucleotide sequence at the beginning of the ferritin mRNA and interferes with ribosome binding. Aconitase must be a
A. transcription repressor protein. B. RNA interference protein. C. translation initiation protein. D. translation repressor protein.