Signal sequences (leaders sequences or signal peptides) are a. used to sort poly

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Signal sequences (leaders sequences or signal peptides) are a. used to sort polypeptide chains to the ER. b. used to sort polypeptide chains to the ribosome. c. used to initiate transcription. d. used to initiate translation. The elongation of the leading strand during DNA synthesis a. occurs in a 3' to 5' direction. b. occurs in a 5' to 3' direction. c. produces lagging strand fragments. d. docs not require a template strand. Telomere sequences at the end of chromosomes a. protect critical genetic information from being lost following the gradual reduction in chromosome length that occurs with each replication cycle. b. initiate DNA replication. c. are required for sister chromatid separation. d. All of the above True or False. Only those proteins that are destined to be secreted from the cell are threaded into the ER. a. True b. False True or Fake. Oncogenes like the mutated ras gene which encodes a G protein, can promote cancer onset by effecting gene regulation. a. True b. False Which statement is true of a sister chromatid pair? a. Each chromatid of the pair is a distinct homologue. b. One of the chromatids in the pair is inherited from the paternal parent, and the other from the maternal parent. c. I hey are separated from each other during the process of mitosis. d. They are not separated from each other during the process of mitosis. What is a chromatid? a. A replicated chromosome b. A special region that holds two centromeres together c. DNA bound with histones d. None of the above

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