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
c. tumor suppressor genes
Biology & Microbiology
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A taxon that includes only birds and bats, two clades of vertebrates capable of flight, is considered ____
a. paraphyletic b. polyphyletic c. monophyletic d. complete e. incomplete
Biology & Microbiology
The molecule shown above is testosterone, a substance that has important regulatory functions in
humans and many other animals. Molecules with regulatory functions like testosterone are called ____.
a. phytosterols b. enzymes c. lipoproteins d. hormones e. receptors
Biology & Microbiology
Chlorophyll does not absorb which color of
light? a. red b. yellow c. orange d. green e. blue
Biology & Microbiology
The basic unit of life is the ____
a. atom b. molecule c. organelle d. cell e. organism
Biology & Microbiology