Bio Lab
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- 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
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