60. Members of the domains Bacteria and Archaea a. have nuclei. b. have chloropl
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60. Members of the domains Bacteria and Archaea a. have nuclei. b. have chloroplasts. c. are multicellular d. are prokaryotes. e. have flagella. 61. The DNA of prokaryotic cells is found in the a. plasma membrane. b. nucleus. c. ribosome. d. nucleoid region. e. mitochondria. 62. The role of organelles is to a. provide structural support for the cell. b. decrease the flow of materials into and out of the cell. c. increase the efficiency of celular activities. d. provide a means of cellular reproduction. e. regulate the flow of materials inside the cell. 63. A large organelle found in eukaryotic cells tha a. chloroplast b. nucleus. c. flagellum. d. vacuole. e. centriole. t genetically controls the cell's activities is 64. Chromatin is a series of entangled threads composed of a. microtubules b. DNA and protein. c. fibrous proteins d. cytoskeleton. e. membranes. 65. Which of the following is not a component of the endomembrane system? a. Rough endoplasmic reticulum b. Smooth endoplasmic reticulum c. Golgi apparatus d. Lysosomes e. Plastids 66. Proteins that are transported in vesicles are made by a. the Golgi apparatus b. ribosomes within the mitochondrion c. the smooth endoplasmic reticulum d. ribosomes on the rough endoplasmic reticulum. e. ribosomes within chloroplasts.Explanation / Answer
60)D- Are prokaryotes.Only the group eubacteria and archaebacteria are prokaryotes.Rest all organisms are eukaryotes.
61)D-The nucleus in prokaryotes is not membrane bound.The chromatin material lies scattered in cytoplam and this region is known as nucleoid.
62)C-Because of the presence of organelles the work of cell gets compartmentalised and distributed and so they help in increasing efficiency of cell.
63)B-Nucleus is the controlling part of cell
64)B-Chromtain is DNA material packed with histone and non histone proteins
65)E -Plastids are not a component of endomembrane system,it consists of ER,golgi body,microtubules,lysosomes etc.
66)D-membrane bound and secreted proteins are made by ribosomes on rough endoplasmic reticulum
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