BIO 211 Exam 2 Questions and Solutions

Eukaryotes and prokaryotes both have all of the following except: endoplasmic reticulum The region containing the genomic circular DNA of bacteria is called the _________. nucleoid All of the following are true regarding the nucleolus EXCEPT The nucleolus contains all of the DNA in a eukaryotic cell. The nuclear envelope consists of two lipid bilayers; contains pores to allow mRNA out of the nucleus; is lined by a fibrous network of fibers called the nuclear lamina that support it and give the nucleus it's shape Chromatin in eukaryotes, consists of linear DNA molecules and associated proteins.; condenses during cellular division into distinct chromosomes which vary in number from species to species, but is specific for a particular species (e.g. humans have 46 chromosomes). Golgi apparatus organelle active in sorting, packaging, modification (and even some synthesis), and secretion of cell product smooth ER syntesizes lipids, metabolizes carbohydrates, detoxifies drugs/poisons, stores Ca+ peroxisome specialized metabolic organelle with multiple functions (e.g. breakdown fatty acids); produces hydrogen peroxide, sequesters it, and then converts it to water lysosome digestive organelle with hydrolytic enzymes that work best in an acidic environment, and when fused with vesicles containing old or damaged organelles performs autophagy ribosome this is not an organelle but a structure made of rRNA and proteins In the picture shown, which of the following labels the Rough Endoplasmic Reticulum and the mitochondria? 5, 2 Which of the following does not support the endosymbiont theory? Mitochondria and chloroplasts both conduct photosynthe