Myasthenia gravis is an example of an autoimmune disease that involves
A. sensitized T cells.
B. cytotoxic T cells.
C. antibodies.
D. IgD.
C
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If an organism inherits one dominant and one recessive allele, the phenotype of this organism will look like which of the following?
a. the dominant allele b. the recessive allele c. both the dominant and recessive allele d. neither the dominant or recessive allele
RNA differs from DNA in all of the following ways except
A) RNA has directionality. B) there are several different types of RNA including mRNA, tRNA, and rRNA. C) in RNA, uracil (U) replaces thymine (T). D) RNA is single stranded. E) RNA has a hydroxyl group on the 2' carbon.
When you kick your foot out in front of you, what type of movement are you using?
A. eversion B. flexion and extension C. inversion D. rotation E. adduction and abduction
Which of the following is not a source of genetic variation in bacterial populations?
a. Transduction b. Transformation c. Conjugation d. Mutation e. Meiosis