The atomic number of an atom is the:
A. number of electrons, plus the number of neutrons, plus the number of protons
B. number of protons plus the number of neutrons
C. number of protons only
D. number of electrons plus the number of protons
E. number of neutrons only
Answer: C
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The most frequent cause of hereditary cancer risk in the human population is inherited mutations in the BRCA1 or BRCA2 genes. In 2014, investigators at Beth Israel Deaconess Medical Center reported that these genes code for proteins implicated in the DNA repair mechanisms that repair errors that commonly occur during DNA replication. What class of proteins would these be?
a. transgenes b. oncogenes c. tumor suppressor genes d. proto-oncogenes
Which of the following is unique to prokaryotes?
a. chemoautotroph b. chemoheterotroph c. photoautotroph d. photoheterotroph e. chemoautotroph and photoheterotroph
When the predator population is above the prey isocline, the prey population is
a. increasing b. decreasing c. neither increasing nor decreasing
The products of genes that are switched on in specific tissues at specific stages of development affect mainly
a. gene replication.
b. gene transcription. c. mRNA transcript processing. d. translation. e. post-translational processing of proteins.