ull TEW ? 5:43 PM 21% O 3 of 9 Done 6. The basic tool of genetic regulation is the ability of certain proteins to bind to specific A. Regulatory RNA sequences. B. Regulatory amino sequences. C. Repressor parts of the gene. D. Promoter parts of the gene. E. Enzymes of the cell. 12. My to A) 7. Proteins that bind to regulatory sequences have shapes that fit into the A. Exon. B. Intron. C. Primary transcript. D. Minor groove of DNA. E. Major groove of DNA. 8. Small RNAS can regulate gene expression. One type, called micro RNA (miRNA), acts by binding directly to A. mRNA to prevent translation. B. TRNA to prevent transcription. C. MRNA to prevent transcription. D. TRNA to prevent translation. 9. The genes necessary for the use of lactose in E. coli are collectively called the A. Lac regulator. B. Lac suppressor. C. Lac operon. D. Lac promoter. E. Lac transcriptional operator. 10. Which of the following statements regarding primary transcripts in eukaryotes is correct? A. The primary transcript is composed of RNA polymerase and associated histones. B. The primary transcript has the exons removed and the introns retained for translation. C. The primary transcript is a faithful copy of the entire gene including exons and introns. D. The primary transcript is a faithful copy of the gene, but the introns have been removed. E. The primary transcript is a faithful copy, but the exons have been removed. 11. If a cell were unable to produce histone proteins, which of the following would be expected to occur? A) There would be an increase in the amount of "satellite" DNA produced during centrifugation. B) The cell's DNA couldn't be packed into its nucleus. C) Spindle fibers would not form during prophase. D) Amplification of other genes would compensate for the lack of histones. E) Pseudogenes would be transcribed to compensate for the decreased protein in the cell.

QUESTION 17 Increased sympathetic stimulation will increase the pacemaker potential in the heart decrease the rate and depth of breathing constrict the smooth muscle of the iris of the eye increase digestion in the gastrointestinal tract

QUESTION 120 Which pregnancy safety categories indicates definite human fetal risk, but in some unusual circumstances potential benefits may outweigh these risks and the drug may be used in pregnant women? category A category B category C category D category X

QUESTION 7 A circular channel that runs down the center of an osteon that contains nerves, blood and lymphatic vessels is called OA Canalicul B. Haversian Canal C Volkmann Canal D Lacunae