USABO Test prep with Complete SolutionsUSABO Test prep with Complete SolutionsUSABO Test prep with Complete Solutions
Which statement is true about enzymes? Enzymes...
A. Are made up of a base containing nitrogen, phosphate, and ribose.
B. Have activity that is independent of temperature and pH...
USABO Test prep with Complete
Solutions
Which statement is true about enzymes? Enzymes...
A. Are made up of a base containing nitrogen, phosphate, and ribose.
B. Have activity that is independent of temperature and pH.
C. Lose some or all of their normal activity when their 3-D structure is disrupted.
D. Provide the activation energy needed to activate a reaction. E. Work once only and then are
destroyed. - ANSWER - C. Lose some or all of their normal activity when their 3-D structure is
disrupted.
You have a multicellular organism that reproduces asexually by fission. When you excise a
~10,000 cell portion of its body, both the original organism and the excised portion grow into
fully formed, healthy organisms. You take one of the offspring and repeat the procedure for one
hundred and twenty-three generations. Each time, the resulting organisms are healthy. What
must be true of the nuclei of this species?
A. The cells contain plasmids.
B. The cells have multiple forms of DNA polymerase.
C. The cells have the majority of their genome stored in circular DNA.
D. The cells contain active telomerase.
E. The cells contain active fissonase. - ANSWER - D. The cells contain active polymerase
Which of the following oligonucleotides would have the highest melting point when paired with
the proper complementary strand?
A. 5'-AAAAAAAA-3'
B. 5'-ATGCATGC-3'
C. 5'-CGCGCGCG-3'
D. 5'-TTTTGGGG-3'
E. 5'-TATATATA-3' - ANSWER - C. 5'-CGCGCGCG-3'
Which of the following correctly describes how the lifespan of a protein is regulated?
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