資訊推薦

• 13.How many Barr bodies can be found in a diploid cell from a normal human female? (A)0 (B)1 (C)2(D)
• 16. Micro RNA (miRNA)can regulate gene expression by binding directly to(A)mRNA to prevent transcrip
• 15. If eukaryotic mRNA molecules contain non-coding sequences that can be removed before translation
• 14. During DNA replication, which enzyme removes the RNA primers and fills in the gap?(A)DNA pol I(B
• 17. There are two distinct domains for specific transcription factors in eukaryotes and they are(A)a
• 22. Some flowering plants show disassortative mating by preventing self-pollination and it increases
• 18. The most common DNA-binding motif is the(A)non-helical zipper(B)leucine zipper (C)zinc finger(D)
• 21.Which model organism we can find a complete cell lineage map?(A)C. elegans(B)Drosophila(C)mouse (
• 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