The spread of cancer is called ____________________. Fill in the blank(s) with the appropriate word(s)
ANSWER: metastasis
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The ribosomes of the rough endoplasmic reticulum (rough ER) are targeted to the cytoplasmic side of the membrane via
a. a signal sequence within the 28S ribosomal RNA. b. a sequence within the protein being synthesized. c. the S6 ribosomal protein. d. the cap sequence at the 5?end of the mRNA being translated.
A couple already has 9 children, and they are all girls. If they decide to have a 10th child, it has a 50% chance that it will be male and a 50% chance that it will be female
Indicate whether the statement is true or false
It is possible for a repressor to negatively regulate the expression of an operon because:
A. the repressor-binding site on the DNA overlaps with the translation start site, thereby preventing the transcription. B. the repressor physically blocks where the activator should be binding on the operator region. C. one of the structural genes expressed in the operon negatively regulates the repressor. D. the repressor-binding site overlaps the promoter site of the operon, allowing it to physically block the binding of RNA polymerase. E. the repressor induces the expression of the inducer by binding to the promoter that comes before the inducer gene.
Which of the following can result when antibiotic therapy disrupts the normal microbiota?
A. anaphylactic shock B. black hairy tongue C. pseudomembranous colitis D. thrush E. both pseudomembranous colitis and thrush