Aseptic technique in obtaining clinical specimens is essential to ensure bacterial presence is due only to
a. normal flora.
b. infection.
c. contamination.
d. none of the above.
Answer: B
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An anticodon
(a) is a three-base sequence of nucleotides on tRNA. (b) is produced by translation of RNA. (c) has the same base sequence as does the codon. (d) is the same as a gene.
Familial adenomatous polyposis coli (APC) is characterized by a small deletion in chromosome 5. In which cells is this deletion present in affected individuals?
A) somatic cells B) germline cells C) colon polyps D) colon epithelial cells E) all cells
Why is iodine considered a trace element that is vital for biological function in humans?
What will be an ideal response?
Which of the following is the path an oxygen molecule would take from the air outside your body to your blood?
A. Alveoli ® bronchioles ® bronchi ® trachea ® capillaries B. Bronchi ® alveoli ® trachea ® bronchioles ® capillaries C. Bronchioles ® trachea ® alveoli ® bronchi ® capillaries D. Trachea ® bronchi ® bronchioles ® alveoli ® capillaries