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• 8. The following methods can separate proteins based on their mass except?(A)centrifugation(B) ion e
• 9. A black guinea pig crossed with a guinea pig with albinism produced 12 black offspring. When the
• 9. A Holiday junction structure is a(n)(A) intermediate in genetic recombination(B) double-stranded
• 10. A mutation that changes a cysteine codon to a tryptophan codon is called a(A) missense mutation.
• 11. What do all β-barrel transmembrane proteins bave in common?(A) The structural tigidity compared
• 12. The two monolayers of the plasma membtane in a human red blood celt :(A) both contain gangliosid
• 13. The permeability of a protein-free lipid bilayer to various molecules depends on their propertie
• 14. Which one is responsible for the progression of GI to S phase?(A) Unphosphorylated Rb(B) Hypopho
• 15. Which one plays the "sliding clamp" in the DNA replication?(A) Cyclin A(B) Cyclin B(C)
• 16. Post-translational modifications modulate a protein activity. To study the functional effect of
• 17. Which one does not involve in splicing of introns in nuclear mRNA primary transcripts?(A) RNA he
• 18. How are most voltage-gated channels inactivated?(A) by closing degrading channel proteins(B) by
• 19. Which of the following statements regarding hotmone and cellular signal transduction is correct?
• 20. Which of the following shows the correct order of potency for stem cells?(A) Totipotent ＞ Multip
• 21. Treatment of the RNA polymerase/DNA complex with DNase in vitro is a DNA footprinting technique
• 10. Abnormal chromosomes are frequently found in malignant tumors. Errors such as translocations may
• 22. The heptapeptide repcat in the carboxy terminal domain (CTD) in the RPB1 subunit of RNA polymera
• 11.During meiosis, a defect occurs in a cell that results in the failure of spindle microtubules bin
• 12. A heat-killed, phosphorescent (light-emitting) strain of bacteria is mixed with a living, non-ph
• 13.If a cell were unable to produce histone proteins, which of the following results would be a like
• 23. Heat shock element (HSE) is a(n)__________found in the________ region of genes whose transcripti
• 14.If the bacterium Staphylococcus aureus experiences a cost for maintaining one or more antibiotic-
• 24. Which of the following statenent(s) is correct regarding to the membrane transport?(1) If a tran
• 15. Which of the following statements are correct?(I)Hormones often regulate homeostasis through ant
• 25. Which of the following statement(s) is cotrect regarding to protein endocytosis or cxocytosis? (