front 1 A cell may allow a large or charged chemical to move across the cytoplasmic membrane, down the chemicals electrical and chemical gradients, is a process called | back 1 facilitated diffusion |
front 2 Which of the following statements concerning growth and reproduction is false? | back 2 A living organism must reproduce to be considered alive. |
front 3 A "9+2" arrangement of microtubules is seen in? | back 3 eukaryotic flagella |
front 4 Which of the following is most associated with diffusion? | back 4 carrier proteins |
front 5 Which of the following is not associated with prokaryotic organisms? | back 5 Cilia |
front 6 Which of the following is true of Svedbergs? | back 6 They are an expression of sedimentation rate during high-speed centrifugation. |
front 7 What are cell walls compose of? | back 7 peptidoglycan |
front 8 a glycocalyx do not? | back 8 form pseudopodia for faster mobility of an organism. |
front 9 Bacterial flagella | back 9 are anchored to the cell by a basal body |
front 10 Which cellular structure is important in classifying a bacterial species as Gram-positive or Gram-negative? | back 10 cell wall |
front 11 A gram-negative cell is moving uric acid across the cytoplasmic membrane against its chemical gradient. What statement is true? | back 11 The acid moves by an active process such as active transport. |
front 12 Gram-positive bacteria | back 12 have a thick cell wall which retains crystal violet dye, contain teichoic acids in their cell walls, and appear purple after Gram staining. |
front 13 Endospores | back 13 are dormant, resistant cells. |
front 14 Inclusions have been found to contain | back 14 sulfur globules |
front 15 Dipicolnic acid is an important component of | back 15 endospores |
front 16 Glycocalyx | back 16 "Suugar cup" composed of polysaccharides and/or polypeptides. |
front 17 Flagella | back 17 Long whip |
front 18 Axial Filaments | back 18 Responsible for motility of spirochetes |
front 19 Cilia | back 19 Made of tubulin in eukaryotes |
front 20 Fimbriae | back 20 Bristlelike projections found in quantities if 100 or more. |
front 21 Pili | back 21 Extensions not used for cell motility |
front 22 Hami | back 22 Numerous "grappling-hook" projections |
front 23 Ribosome | back 23 site of protein synthesis |
front 24 Cytoskeleton | back 24 Allows contraction of the cell |
front 25 Centriole | back 25 contains microtubules in "9+0" arrangement |
front 26 Nucleus | back 26 Site of most DNA in eukaryotes |
front 27 Mitochondrion | back 27 Its internal membranes are sites for ATP production. |
front 28 Chloroplast | back 28 Light-harvesting organelle |
front 29 ER | back 29 Functions as the transport system within a eukaryotic cell |
front 30 Golgi body | back 30 Packages large molecules for export from a cell |
front 31 Peroxisome | back 31 Contains enzymes to neutralize hydrogen peroxide. |
front 32 What is the function of glycocalyces and fimbriae in forming a biofilm? | back 32 They adhere cells to one another and inanimate objects and fimbriae attaches the archaea to surfaces |
front 33 What factors may prevent a molecule from moving across a cell membrane? | back 33 size, charge, and polarity |