Which of the following organelles does NOT contain its own DNA?
A. Nucleus
B. Chloroplast
C. Rough endoplasmic reticulum
D. Mitochondrion
Ans: C. Rough endoplasmic reticulum
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If a hypothetical human female of genotype XX had no Barr body in any of her cells
a. she would be phenotypically male b. she would be considered triploid c. the genes on both X chromosomes would be expressed d. she would have Turner syndrome e. she would have a Y chromosome
During cellular respiration, NADH
A) is chemically converted into ATP. B) is reduced to form NAD+. C) delivers its electron load to the first electron carrier molecule. D) is the final electron acceptor.
A young patient presents with a cervical (pharyngeal) cyst. A CT scan of this patient indicates a connection between the cyst and the pharynx. What term describes the connection?
A. Ectopic thymus B. External Branchial Fistula C. Internal Branchial Fistula D. Pharyngeal Cleft E. Pharyngeal Pouch
At what stage is a mutation predicted to have the effect?
A) after the age of 60 B) during early embryonic development C) after birth but before puberty D) shortly after birth E) after puberty