Bio Lab

34 Questions

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Lab Quizzes & Trivia

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Questions and Answers
  • 1. 
    One of the following is mismatched 
    • A. 

      Vitamin c / indophenol

    • B. 

      Benedict s test positive color is red orange

    • C. 

      Starch / reducing sugar

    • D. 

      Biuret test / peptide bond

  • 2. 
    All these statement are true execpt
    • A. 

      Compound microscope reveals 2d image

    • B. 

      Dissecting microscope is useful for large transparent speciman

    • C. 

      Oil immersion specimen with total magnification of 100 times

    • D. 

      B+c

  • 3. 
    Reducing sugar have
    • A. 

      Bounded to aldehyde or ketone

    • B. 

      Modified aldehyed or ketone

    • C. 

      Free aldyhyed or ketone

    • D. 

      Both aldyhyed or ketone

  • 4. 
    You want to examine   a prepared slide under the microscope but while you are preparing your microscope you noticed a lot of dust on the glass part so in order to clean them you will use
    • A. 

      Tissue paper

    • B. 

      Filter paper

    • C. 

      Lens paper

    • D. 

      Optiona piece of cloth

  • 5. 
    Having violet color after adding biuret reagent to your specimen means that this specimen may contain
    • A. 

      Peptide bonds

    • B. 

      Biuret compound

    • C. 

      Protein

    • D. 

      All of the above

  • 6. 
    Having blue color in the dehydrogenase enzyme activity experiments means
    • A. 

      The enzyme is active

    • B. 

      The enzyme is inactive

    • C. 

      The sample is a negative control

    • D. 

      Either a or c is correct

    • E. 

      Either b or c is correct

  • 7. 
    The toxic H2O2 can broken by
    • A. 

      Lipase

    • B. 

      Protaeas

    • C. 

      Catecholase

    • D. 

      Catalase

  • 8. 
    CO2 in cellular respiration is produced from
    • A. 

      Phoshorelation

    • B. 

      Inhalation

    • C. 

      Exhalation

    • D. 

      Activation

  • 9. 
    Keeping the enzymes at refrigerator  at 4 c will lead to 
    • A. 

      Activation

    • B. 

      Inactivation

    • C. 

      Denaturation

    • D. 

      Renaturation

  • 10. 
    Which of the following states are correct about phospholibids
    • A. 

      Hydrophobic tails of phospholipid face the watery environment

    • B. 

      Hydrophobic head of the phospholipid face the watery environment

    • C. 

      Hydrophilic head of phospholipid face the watery environment

    • D. 

      The linkage between glycerol and the tail is phosphodiester bond

    • E. 

      Both a and c

  • 11. 
    In order to detect the presence of a reducing sugar you will use:
    • A. 

      copper sulfate and sodium hydroxide solution

    • B. 

      Copper sulfate solution under alkaline conditions

    • C. 

      Lugol's iodine

    • D. 

      Indophenol

  • 12. 
    You have four types of juices A, B, C and d and you apply the final test to detect the amount of ascorbic acid (vitamin C) the research shows that 3, 10, 6 and 17 drops respectively were needed to turn the indophenol into colorless but this is juices in an ascending Arrangement depending on the amount of ascorbic acid each have:
    • A. 

      . A, B, C then D

    • B. 

      A, C, D, then D

    • C. 

      D, B, C then A

    • D. 

      A, C, B then D

    • E. 

      B, A, D then C

  • 13. 
    A student was given an unknown sample and she was asked to detect contests by applying different test to it. in order to do this she divided the sample into 3 tubes(1,2,3) and applied Benedict's, Biuret, and starch test and the result were : green, blue and brown, respectively. So, mostly the sample contains:
    • A. 

      Peptide bond

    • B. 

      Free aldehyde or Ketone groups

    • C. 

      bounded aldehyde or Ketone groups

    • D. 

      starch

    • E. 

      Vitamin C

    • F. 

      None of the above

  • 14. 
    Once your using the oil immersion lens then you are at total magnification of 
    • A. 

      100

    • B. 

      40

    • C. 

      400

    • D. 

      1000 or 1500

    • E. 

      10

  • 15. 
    The dye used to stain animal cells (cheek) is:
    • A. 

      Methylene blue

    • B. 

      Lugols iodine

    • C. 

      acid-fast

    • D. 

      Safranin

  • 16. 
    The positive results for having catalase activity is ______________, and the source of this enzyme including your lab work was __________.
    • A. 

      pinkish /brown color, potato Tubers

    • B. 

      no colot, potato tubers

    • C. 

      Releasing O2 bubbles, potato tubers

    • D. 

      releasing O2 bubbles, yeast

    • E. 

      no color, yeast

  • 17. 
    هل انت مدريدي ولا برشلوني
    • A. 

      (YMHمدريدي (تحياتي الك شخصيا من

    • B. 

      (برشلوني (عنا 12 ابطال هههههه

    • C. 

      اخرين

    • D. 

      شو انك فاضي

  • 18. 
    The part of the microscope that fix the slide in the place is the 
    • A. 

      Nosepiece

    • B. 

      Stage clip

    • C. 

      Body tube

    • D. 

      Eye piece

  • 19. 
    Which on of the following part of microscope is use for sharpening of the image
    • A. 

      Fine focus adjustment knob

    • B. 

      Coarse focus adjustment knob

    • C. 

      The iris diaphram

    • D. 

      The condeser lens

  • 20. 
    Which of the following statements is false
    • A. 

      Glycolysis can occur with or without oxygen

    • B. 

      Glycolysis occur in the mitochondria

    • C. 

      Glycolysis is the first step in both aerobic and anaerobic respiration

    • D. 

      Glycolysis produces 2 atp 2 nadph and 2 pyruvate

  • 21. 
    On of the following are used as negative control 
    • A. 

      Starch

    • B. 

      Potato

    • C. 

      Distelled water

    • D. 

      Onion

  • 22. 
    The electron and proton acceptor in the equations below is  glucose + yeast + methylene blue ---- x + leukomethylene
    • A. 

      Methylene blue

    • B. 

      Glucose

    • C. 

      Leukomethylene

    • D. 

      X

  • 23. 
    The richest source of vitamin c is 
    • A. 

      Orange

    • B. 

      Lemon

    • C. 

      Grapes

    • D. 

      Potato

  • 24. 
    During your lap work you prepared a wet amount slide for plant cell the source of specimen
    • A. 

      Human cheek epithelum

    • B. 

      A slice of potato

    • C. 

      Onion epidermis

    • D. 

      A leaf

  • 25. 
    The final electrons receptors in the process of fermentation is 
    • A. 

      O2

    • B. 

      H

    • C. 

      C

    • D. 

      Organic molecules

  • 26. 
    The total ATP yield in the process of respiration 
    • A. 

      30

    • B. 

      32

    • C. 

      34

    • D. 

      36

  • 27. 
    – you prepared a wet mount slide for an animal cell . In order to have a better contrast for your specimen , you will :
    • A. 

      . increase the light intensity

    • B. 

      . decrease the light intensity

    • C. 

      . stain it with methylene blue

    • D. 

      Stain it with logo's iodine

  • 28. 
    The solubility of fats and lipids in different solvent depends on
    • A. 

      Polarity of soluation

    • B. 

      Two answers are correct

    • C. 

      Polarity of the solvent

    • D. 

      Amount of water

    • E. 

      Depends on nothing

  • 29. 
    وهاد السؤال بونص الكم دكاترتنا
    • A. 

      لجنة الطب البشري

    • B. 

      - بتتمنالكم التوفيق بامتحانكم

    • C. 

      ربنا يفتحها عليكم وينور بصيرتكم

    • D. 

      - قدها والله

    • E. 

      All of the above

  • 30. 
    Nucleoid region is :
    • A. 

      Contains the bacterial chromosome

    • B. 

      Surrounded by a nuclear envelope

    • C. 

      is presented in plants and bacterial cells

    • D. 

      A part of the nucleus

  • 31. 
    The site where ribosomal subunits are synthesized is :
    • A. 

      Nucleolus

    • B. 

      Nucleus

    • C. 

      Rough ER

    • D. 

      Cytoplasm

  • 32. 
    All of the following are shared between animal and plant cells except :
    • A. 

      Peroxisomes

    • B. 

      Centrioles

    • C. 

      Lysosomes

    • D. 

      Cytoskeleton

  • 33. 
    According to the " anaerobic respiration of yeast " experiment  , we must wrap each tube with aluminium foil in order to :
    • A. 

      Prevent oxygen diffusion

    • B. 

      Ensure that aerobic respiration will occur

    • C. 

      Prevent photosynthesis

    • D. 

      To prevent photosynthesis and oxygen diffusion

  • 34. 
    The enzyme dehydrogenase removes hydrogen atoms from glucose and transfer them to :
    • A. 

      NAD+

    • B. 

      Various hydrogen acceptors

    • C. 

      Electrons acceptor dyes like methylene blue when we use it experimentally

    • D. 

      all of the above