Which number represents the atomic weight of oxygen?
A. 18
B. 16
C. 6
D. Not enough information given
Answer: B
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Humans belong to domain ________, which is distinguished by cells that have ________.
A) Prokarya; organelles B) Archaea; ancient organelles C) Eukarya; organelles D) Prokarya; proteins
Which one of the following is a human blood type?
A) E+ B) B- C) ABO- D) Rh E) Rh+
When two squash plants with disc-shaped fruit are crossed, depending on the genotype of the parents, disc, sphere, and long fruits may be seen in the offspring. This is an example of ________
A) epistasis B) heterogenous trait C) complementation D) dominant lethal E) two gene interaction with novel phenotypes
In DNA sequence analysis
A. the + strand of DNA is used. B. the start codon is ATG. C. ORFs are searched for. D. codon usage is a helpful indicator for protein coding areas. E. All of the choices are correct.