2006_Final_Exam_Q&A - Bio2600 Introduction to Cell...

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Bio2600: Introduction to Cell Biology name: Dec. 19, 2006 80 questions total FINAL EXAM Section 1: Complete each sentence with one of the words between square brackets [A. / B. ]. 1. During M phase, the cytoplasm is split in two in a process called [A. mitosis/B. cytokinesis]. 2. In eukaryotic cells, t he assembly of the general transcription factors occurs at the DNA sequence called the [A. operator/B. TATA-box]. 3. [A. Covalent/B. Non-covalent] bonds are formed between the codon and anti-codon. 4. Phosphorylation of a protein is a common means of [A. non-covalent/B. covalent] modification of proteins. 5. [A. True/ B. False] When each strand is read in the 5' to 3' direction, the sequence of nucleotides in a newly synthesized DNA strand is the same as in the parental template strand. 6. The upward deflection of an action potential results from the opening of voltage-gated [A. K+/B. Na+] channels. 7. During mitosis [A. kin etochore/B. aster] microtubules establish contact with and help separate chromosomes. 8. The replication fork i s [A. symmetrical/B. asymmetrical] due to the need to polymerize DNA in only one direction. 9. Insulin, a small hydrophillic peptide will bind to a receptor [A. in the cytosol/B. in the cell membrane]. 10. The anti-codon ACC recognizes the codon [A. UGG/ B. GGU]. 11. Histone [A. acetylase/B. deacetylase] is an enzyme that modifies histones and renders the DNA less accessible to general transcription factors. 12. [A. Paracrine/B. Endocrine] signals are secreted by one cell to act locally on adjacent cells without necessarily entering the blood stream. 13. The ribosome is compos ed of two subunits, one of which, the [A. large/ B. small] subunit, catalyzes the formation of the peptide bonds that link the amino acids together into a polypeptide chain. 14. In eukaryotic cells, n early all cell membrane is initially formed in the [A. Endoplasmic Reticulum/B. Golgi]. 15. DNA buried inside a me taphase chromosome is transcriptionally [A. active/B. inactive]. 16. The enzyme Primase can polymerize [A. ribon ucleotides/ B. deoxy ribon ucleotides] to create the small primer used by DNA polymerase. Page 1, v1
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17. Proteins are transported out of the cell via the [A. endocytic/B. exocytic] pathway. 18. The majority of a cell's energy content is represented in the concentration of [A. pyruvate/ B. acetyl-CoA] in the cell. 19. The process that generates CO 2 while removing hydrogen atoms from organic compounds is called [A. the citric acid cycle/B. glycolysis]. 20. When using a channel protein, Na+ ions always enter the cell in the direction that allows them to go [A. up/ B. down] a concentration gradient. 21. The [A. unipolar/B. bi polar] nature of a myosin thick filament is essential for muscle contraction. 22. Glucose is broken down in the cell by a step wise [A. reductive/B. oxidative] process that provides energy. 23. Dynamic instability is a characteristic feature of both microtubules and [A. i ntermediate filaments/ B. microfilaments].
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