資訊推薦

• 6.When human beings choose a mate, they usually prefer people with the same skin color, same culture
• 7.Cytoskeleton of a eukaryotic cell is made up of (a)microtubule, (b)microfilament and(c)intermediat
• 8.Mitochondria are thought to be the descendants of certain alpha proteobacteria. They are, however,
• 9.What controls sex determination in American alligator?(A) Temperature(B) Behavioral interactions(C
• 10. Why are action potentials usually conducted in only one direction along an axon?(A) The nodes of
• 11. Which statement about biological homology is correct?(A) Paralogs: Insect wings and bat wings ar
• 12. Which of the following statements regarding photoperiodism is false?(A) Photoperiodism is the ph
• 13. All female mammals have one active X chromosome per cell instead of two. What causes this tohapp
• 14. A genetic map shows the map distance. The units of genetic distance are called map units (mu)or
• 15. A researcher is analyzing the immune response of a patient following the patient's exposure
• 16. What is the name of the protein that is used to form the initial glycogen primer?(A) phosphopori
• 17. Which of the following pairs of amino acids could form electrostatic interactions by their side
• 18. In humans, gluconeogenesis:(A) can result in the conversion of protein into blood glucose.(B) he
• 19. Which of the following is (are) NOT found as covalently attached anchors in lipid-linked protein
• 20. Aspirin inhibits the synthesis of which of the following sets of eicosanoids?(A) Prostaglandin E
• 21. In which metabolic pathway does glucose-6-phosphate dehydrogenase play a key role?(A) glycogenes
• 22.Which of the following explains are the enzyme effects?(A) Enzymes release products very rapidly(
• 23. Enzymes are biological catalysts that enhance the rate of a reaction by:(A) decreasing the activ
• 24. To determine the isoelectric point of a protein, first establish that a gel:(A) contains a denat
• 25 Which of the following lipids can be formed by the methylation of phosphatidylethanolamine?(A) Ph
• 26. Which volatile short-chain fatty acid is believed to lower serum cholesterol by acting as an inh
• 27. Which of the following techniques was NOT used to determine the three-dimensional structure of(A
• 28. Which of these statements is generally true of integral membrane proteins?(A) A hydropathy plot
• 29.In a newly discovered electron transport complex a researcher has identified the redox center Fe-
• 30. Which of the following pairs of sugars are epimers of each other?(A) D-sorbose and D-fructose(B)