資訊推薦

• 19. The enzyme dicer can chop dsRNA molecules into small pieces and they are(A)mRNA and miRNA(B)miRN
• 20.We calculate recombination frequency between genes to generate a(A)genetic map(B)physical map(C)r
• 27. Synteny is(A)the rearrangement of gene order due to inversions(B) the constancy of chromosome nu
• 26. If genes have been mutated by introducing stop codons or transposons disrupting within the codin
• 25. A monophyletic group is that(A)all members share homoplastic traits(B)not all descendants of the
• 24. The evolution of similar forms in different lineages if exposed to the same selective pressures.
• 28. Viruses may cause cancer by(A)disrupting a cancer-causing gene(B)inserting cancer causing genes
• 31. Why do many seeds contain oils form in a significant part of the nutritional reserves?(A)Oils he
• 29. What is the strong evidence to suggest a protist is phagotrophic?(A)an abundance of lysosomes(B)
• 23. Natural selection for a certain phenotype will affect the(A)genotype of a population(B)genotype
• 30. Which nutrient would mycorrhizae be especially effective in helping plant roots uptake?(A)nitrog
• 33. The myofibrils consist of both thin and thick filaments. The thick filaments are composed of(A)a
• 34. If a man has not eaten for three days, what molecule will be in high level?(A)insulin(B)glucagon
• 35. If uric acid accumulates in high level in joints of humans, we refer this condition as(A)atheros
• 32. Erythropoietin stimulates red blood cell production in the bone marrow. What nonendocrine organc
• 37. What cells are the precursors of macrophages?(A)B cells(B)monocytes(C)plasmacells(D)T cells
• 36. In vertebrates, most of the fluid that ultimately exits the body as urine first enters the nephr
• 38. Which cells produce antibodies?(A)B cells (B)monocytes(C)plasma cells (D)macrophages
• 39. What molecule would prompt monthly preparation of uterus for pregnancy?(A)progesterone(B)testost
• 44.Some plants can produce chemicals that play the significant role in protecting plants from beinge
• 40.What molecule stimulates ovulation?(A)progesterone(B)FSH, or follicle-stimulating hormone (C) LH,
• 41.What structure is formed from both fetal and maternal tissue?(A)chorion(B)amnion(C)yolk sac (D)pl
• 42. What factor will make the strongest influence on the cleavage pattern of an embryo?(A)incubation
• 43. The degree of parental investment required often results in the non-random mating behavior and w
• 45. The way that a species fits in its environment can be called as(A)resource partitioning(B)its ha