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Biological Molecules and Tests

Daniel Brand 22 preguntas 3.048 visitas

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Preguntas del test (22)

  1. 1Which of the following are among the MOST important functions of Calcium, biologically? Check all that apply.
    1. AAbility to see clearly in low light.
    2. BRigidity of structures such as teeth.
    3. CConduction of action potentials.
    4. DMuscle contraction.
    5. EOsmotic pressure of cells.
    6. FBlood clotting.
    7. GCell wall development.
    8. HAid in lipid digestion and absorption.
  2. 2[blank_start]Cohesion[blank_end] describes the phenomenon of when water molecules to stick together. [blank_start]Surface tension[blank_end] is what describes when water is more attracted to itself than to surrounding media.
    1. ACohesion
    2. BSurface tension
  3. 3Why is water's state at room temperature so essential to life? Check all that apply.
    1. AIt forms a habitat that animals can move through.
    2. BTissues repel water so they don't become hypertonic.
    3. CIt's a good solvent so a good reaction medium and transport medium.
    4. DIt sinks when solidified.
  4. 4Water's high thermodynamic stability is illustrated in its [blank_start]high[blank_end] specific heat [blank_start]capacity[blank_end], which means it heats up [blank_start]slowly[blank_end], and [blank_start]latent[blank_end] heat of [blank_start]vaporisation[blank_end], meaning it has a [blank_start]high[blank_end] boiling temperature.
    1. Ahigh
    2. Bcapacity
    3. Cslowly
    4. Dlatent
    5. Evaporisation
    6. Fhigh
  5. 5Which of the following are among the MOST important functions of Sodium, biologically? Check all that apply.
    1. AMaintenance of osmotic pressure.
    2. BReabsorption of water from the nephron tubule.
    3. CAid in carbohydrate absorption.
    4. DAid in lipid absorption from the gut.
    5. EElectrical impulse transmission.
    6. FGlucose breakdown.
  6. 6Which of the following are among the MOST important functions of hydrogen ions, biologically? Check all that apply.
    1. APhotosynthesis.
    2. BEstablishing pH.
    3. CRespiration.
    4. DMaintaining free radicals.
    5. ESolvent.
  7. 7Water molecules are held together by [blank_start]hydrogen bonds[blank_end]. This is thanks to oxygen's [blank_start]electronegativity[blank_end], which means that the oxygen region of the molecule is slightly more [blank_start]negative[blank_end] than the hydrogen regions. Water is said to be a [blank_start]polar[blank_end] molecule.
    [blank_start]Hydrogen bonding[blank_end] is the attraction between [blank_start]slightly negative oxygen[blank_end] atoms and [blank_start]slightly positive hydrogen[blank_end] atoms, and explains why water is a [blank_start]liquid[blank_end] at room temperature, despite its small size.
    1. Ahydrogen bonds
    2. Bweak intermolecular forces
    3. Cionic bonds
    4. DLondon forces
    5. Eelectronegativity
    6. Flarger size
    7. Gabundance in air
    8. Hcharge
    9. Inegative
    10. Jpositive
    11. Kthermodynamically stable
    12. Lthermodynamically unstable
    13. Mpolar
    14. Nreactive
    15. Oelectron-dense
    16. Pnonpolar
    17. QHydrogen bonding
    18. RElectronegativity
    19. SIonic bonding
    20. TCovalent bonding
    21. Uslightly negative oxygen
    22. Vslightly larger oxygen
    23. Wslightly negative hydrogen
    24. Xslightly positive hydrogen
    25. Ycharged oxygen
    26. Zslightly positive hydrogen
    27. AAslightly positive oxygen
    28. ABslightly negative hydrogen
    29. ACslightly smaller hydrogen
    30. ADliquid
    31. AEvapour
    32. AFsolid
    33. AGgas
  8. 8Which of the following are among the MOST important functions of ammonium ions, biologically? Check all that apply.
    1. AProtein synthesis
    2. BPresent in chlorophyll
    3. CNucleic acids
    4. DHormone production
    5. EVitamin absorption
    6. FMaintaining oncotic pressure
    7. GRecycling of plasma
  9. 9Which of the following are among the MOST important functions of nitrate ions, biologically? Check all that apply.
    1. AProtein synthesis
    2. BPart of vitamins
    3. CForm nucleic acids
    4. DImportant role in nitrogen cycle
    5. EFound in chlorophyll
    6. FRegulation of pH
    7. GReabsorption of glucose from nephron tubule
    8. HFunctional group in haemoglobin
  10. 10Water is at its most dense at 4 degrees C.
    1. AVerdadero
    2. BFalso

Información

Descripción
(Biological Molecules) Biology Test sobre Biological Molecules and Tests, creado por Daniel Brand el 16/02/2017.
Idioma
English
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