Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 3, Problem 3RQ
Summary Introduction
To review:
The process of cell fractionation that permits the separation of proteins present in the cytoplasm, periplasm, inner and outer membrane of a cell.
Introduction:
Gram-negative is one of the types of bacteria that are not able to retain crystal violet stain from the
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12) Match the cell-cell junction on the left with the appropriate function on the right. Note that
more than one letter may apply for a particular function and that each letter may be used more
than once or not at all.
A) Gap junctions
provides a very strong attachment point
between cells
B) Desmosomes
allow easy movement of large amounts of
substances between adjacent cells
C) Plasmodesmata
seals the plasma membranes of adjacent
cells together, preventing the movement of molecules
between them
D) Tight junctions
The role of the integral protein is to
a) Create a barrier
b) allow ions into the cell
c) maintain fluidity at low tempe
d) recognize cell is safe
High Surface area to volume ratio allows cells to do what quickly?
a) Move materials around inside the cell
b) Move materials in and out of the cell
c)Communicate to other cells
d) Divide
Chapter 3 Solutions
Microbiology: An Evolving Science (Fourth Edition)
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- Describe the cross - section side view of a Gram - negative cell . Clearly state where the following would be located or write the letters in order of appearance from the outside to the inside . If any of these structures are not present , make sure to leave them out . A ) peptidoglycan ; ( B ) periplasm ; ( C ) porin ; ( D ) LPS ; ( E ) teichoic acids ; ( F ) plasma membrane : ( G ) outer membrane : ( H ) nucleoidarrow_forwardHow are the intrinsic proteins in cell membrane distributed?a) Uniformb) Randomc) Symmetricd) Asymmetricarrow_forwardA) Describe in as much detail as you can, the fluid mosaic model of a cellular membrane. B) What is special about the phospholipid in the cell membrane? C) Name four components of the fluid mosaic model and their function in the membrane.arrow_forward
- describe the structure and function of: a) Two cell components that are found in both eukaryotic and prokaryotic cells. b) Two cell components that are found in eukaryotic cells only (plant or animal). c) Two cell components that are often found in prokaryotic cells only.arrow_forwardWhich of the following processes could be/are conducted by lysosomes? A) synthesis of mRNA B) Krebs cycle C) phagocytosis – the breakdown of ingested bacteria or autophagy-the breakdown of damaged mitochondria inside the cell D) RNA synthesis E) all of these.arrow_forwardWhich of the following are binding/architectural proteins in the nucleus? a) U1 and U3 and H1, H2, and H3 b) cohesion, TFIIIC, CTCFarrow_forward
- For which of the following apply: the extracellular space is eliminated here near the surface between two cells. A) Zonula adherens B)Zonula occluded C) Desmosome D) Gap junction E) Hemidesmosomearrow_forwardWhich of the following statements about cell division and cells is true? a) Adults have much larger cells than children, and adults have many more cells than children. b) Adults and children have cells that are about the same size, and both children and adults have about the same number of cells. c) Adults and children have cells that are about the same size, but adults have many more cells than children. d) Adults have much larger cells than children, but both children and adults have about the same number of cells.arrow_forward1. Describe the relationship between the following cellular structures and contents. a) endoplasmic reticulum and the nuclear envelope B) centriole and microtubules C) ribosome and nucleolus D) plastids and pigmentsarrow_forward
- Which among the following defines GPI anchored proteins? 1)Integral proteins of the plasma membrane 2)Peripheral proteins of the plasma membrane 3)Proteins that bind to ion-gated channels in the plasma membrane 4)Proteins which randomly bind to lipids of the plasma membranearrow_forwardWhen a prokaryote cell is placed in a hypertonic solution (water with a higher energy level compared to inside the cell), one would expect that H2O would: A) diffuse out of the cell through the lipid section of the phospholipid bilayer B) cause protein synthesis C) move using active transport proteins D) diffuse through Endoplasmic reticulum portal protein E) diffuse through portal proteins of the cell membranearrow_forwardWhich of the following is not found inside the cell membrane? a) Nucleus. b) Flagella. c) Golgi apparatus. d) Vacuoles. e) Cell wall. Where would one not encounter ribosomes in a cell? a) Embedded in the plasma membrane that forms the smooth endoplasmic reticulum. b) Embedded in the plasma membrane that forms the rough endoplasmic reticulum. c) Floating “free” in the cytoplasm. The liver is an organ that functions to detoxify body fluids of poisonous chemicals (like ethyl alcohol). What organelle within liver cells helps it to accomplish this function? a) Nucleoli. b) Lysosomes. c) Golgi apparatus. d) Smooth endoplasmic reticulum. The cell walls of what type of organism contain the chemical chitin. a) Plants. b) Animals. c) Bacteria. d) Fungi. What organelle produces lysosomes? a) Mitochondria. b) Golgi apparatus. c) Ribosomes. d) Vacuoles. What structure is a large vacuole that lends internal support to…arrow_forward
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