Considering the catabolite repression mechanism, which observation would make you suspect it is NOT occurring?
A) CRP bound to promoter sites
B) elevated levels of transcripts for maltose and sucrose catabolism
C) relatively low intracellular cyclic AMP levels
D) RNA polymerase bound to biosynthetic promoter sequences
Answer: C
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We now know that some of the 7 alleles Mendel studied are on the same chromosome in pea plants
Despite this, the law of independent assortment still applies. How can you explain this?
a. There is recombination via the synaptonemal complex during mitosis. b. There is recombination via the synaptonemal complex during meiosis. c. The law of independent assortment applies to all alleles regardless of their arrangement on chromosomes. d. Mendel was a good enough mathematician to design experiments that would result in the predicted ratios. e. Mendel was incredibly lucky.
Which of the following cells function in both innate and adaptive immunity?
A) Red blood cells B) White blood cells C) Skin cells D) All of the above
When immunization levels in a population are high, ________ provides protection from infection for at-risk persons who cannot be immunized
A) contact immunity B) active immunization C) herd immunity D) adjuvant therapy E) variolation
T or F: lifting free weights is a form of isotonic exercise
What will be an ideal response?