The chemical 5-bromouracil mimics the chemical structure of thymine, making it a(n) (analog/nucleotide/precursor) of thymine
What will be an ideal response?
analog
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Many food infection agents also cause waterborne diseases
Indicate whether the statement is true or false.
Which of the following is not an anatomical change that would be associated with a transition from four to two legs?
A. S-shaped spine B. repositioned foramen magnum C. narrower human foot D. wider stance E. None of the answer options are correct.
Which of the following forms of nitrogenous waste is excreted by mammals?
A. ammonia B. urea C. nucleotides D. uric acid E. allatonin
Below is a diagram of DNA replication as currently believed to occur in E. coli. Arrows start from numbers and end at specific points. Answer the questions relating to the locations specified by the numbers
(1 ) Which end (5' or 3') of the molecule is here? (2 ) Which enzyme is probably functioning here to deal with supercoils in the DNA? (3 ) Which enzyme is probably functioning here to unwind the DNA? (4 ) Which nucleic acid is probably depicted here? (5 ) What are these short DNA fragments usually called? (6 ) Which enzyme probably functions here to couple these two newly synthesized fragments of DNA? (7 ) Is this strand the leading or lagging strand? (8 ) Which end (5' or 3') of the molecule is here?