Unit One Exam

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  27                       
                           
 
 

Across

  1. The nuclear body is bounded by a nuclear membrane; the ribosomes are composed of a 60S and a 40S subunit; internal membrane-bound organelles such as mitochondria , endoplasmic reticulum, Golgi apparatus , and vacuoles are present.
  2. A cylindrical, hot-dog-shaped bacterium.
  3. Cell wall surface proteins that enable some bacteria to penetrate host cells.
  4. Cocci arranged in irregular, often grape-like clusters.
  5. The structure formed when Fts proteins interact to form a ring at the cell division plane. Form the cell division apparatus.
  6. The color gram-positive baxteria stain following the Gram stain procedure.
  7. Enzyme that reform the peptide cross-links between the rows and layers of peptidoglycan to make the wall strong.
  8. A broad, dense bacterial cell wall 20-80 nm thick and consisting of numerous interconnecting layers of peptidoglycan interwoven with teichoic acids and lipoteichoic acids. (2 words)
  9. Enzyme that breaks the glycosidic bonds between the peptidoglycan monomers at the point of growth along the existing peptidoglycan and breaks the peptide cross-bridges that link the rows of sugars together during peptidoglycan synthesis.
  10. The net movement of gases or small uncharge polar molecules across a phospholipid bilayer membrane from an area of higher concentration to an area of lower concentration. (2 words)
  11. The nuclear body is not bounded by a nuclear membrane; the ribosomes are composed of a 50S and a 30S subunit; internal membrane-bound organelles such as mitochondria , endoplasmic reticulum, Golgi apparatus , and vacuoles are absent.
  12. Molecules unique to microorganisms that are not associated with human cells. They include LPS, peptidoglycan, lipoteichoic acids, mannose, flagellin, bacterial DNA. (acronym)
  13. Transport proteins that simultaneously transport two substances across the membrane in the same direction.
  14. A bacterial cell wall composed of a thin, inner layer of peptidoglycan and an outer membrane of phospholipids, lipopolysaccharide, and lipoprotein. (2 words)
  15. A tight-knit molecular complex composed of chains of amino sugars connected by peptide linkages; forms the cell wall of Bacteria.

Down

  1. Cell wall surface proteins that enable the bacterium to adhere intimately to host calls.
  2. A bacterial cell wall composed of peptidoglycan, arabinogalactan, and an outer membrane or envelope containing large amounts of glycolipids, especially mycolic acids.
  3. The color gram-negative baxteria stain following the Gram stain procedure.
  4. Enzyme that insert and link new peptidoglycan monomers into the breaks in the peptidoglycan.
  5. This structure, composed of peptidoglycan, enables bacteria to resist osmotic lysis. (2 words)
  6. The diffusion of water across a membrane from an area of higher water concentration to lower water concentration.
  7. A thin, flexible, spiral-shaped bacterium.
  8. The population doubles every generation time. (2 words)
  9. The selectively permeable membrane composed of a bilayer of phospholipids embedded with proteins, this structure determines what enters and leaves the cell. (2 words)
  10. Transport proteins that transport one substance across the membrane in one direction while simultaneously transporting a second substance across the membrane in the opposite direction .
  11. Cocci arranged in chains.
  12. Two joined amino sugars, N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM), with a pentapeptide coming off of the NAM is called a peptidoglycan _______________.
  13. Molecules on or in host cells that are able to recognize or bind to pathogen-associated molecular patterns in order to induce innate immunity. (acronym)


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