بسم الله الرحمن الرحيم
Answaer for blood bank 1 mcqs
1-what is the maximum volume of blood that can be collected from a 110-
Ib donor, including sample for processing ?
450 ml
500 ml
525 ml
550 ml
2-how often can a blood donor donate whole blood ?
every 24 hours
once a month
every 8 weeks
twice a year
3-when RBCs are stored,there is a " shift to the left" this means :
hemoglobin oxygen affinity increases ,owing to an increase in 2,3-DPG.
hemoglobin oxygen affinity increases .owing to de-crease in in 2,3-DPG.
hemoglobin oxygen affinity decreases,owing o a de-crease in in 2,3-DPG.
hemoglobin oxygen affinity decrease, owing to an increas in in 2,3-DPG.
4-the majority of platelets transfused in the united state today are :
whole blood derived platelets prepared by the platlet-rich plsama method
whole blood-derived platelets prepared by the buffy coat method
apheresis platelets
presorage pooled platelets
5-which of the following anticoagulant preservatives provides a storage
time of 35 days at 1ْ C to 6ْ C for units of whole blood and prepared RBCs
if an additive solution is not added?
Medlab quizes
ACD-A
CP2D
CPD
CPDA-1
6-what are the current storage time and storage temperature for platelet
concentrates and apheresis platelet components ?
5 days at 1ْ C to 6ْ C
5 days at 24ْ C to 27ْ C
5 days at 20ْ C to 24ْ C
7 days at 22ْ C to 24ْ C
7-RBCs can be frozen for :
12 month
1 year
5 years
10 years
8-additive solution are approved for storage of red blood cells for how
many days ?
21
42
35
9-what is hemoglobin source for hemoglobin-based oxygen carriers in
advanced clinical testing ?
only bovine hemoglobin
only human hemoglobin
both boivne and human hemoglobin
non of the above
10-which of the following occurs during storage of red blood cells ?
pH decreases
Medlab quizes
2,3-DPG increase
ATP increase
11-nucleic acid amplification testing is used to test donor blood for which
of the following infectious disease?
hepatitis C viruse
human immunodeficiency virus
west naile virus
all of the above
12-which one of the following is NOT an FAD-approved test for quality
control of platelets ?
bacT/ALERT
eBDS
Gram stian
13-prestorage pooled platelet can be stored for:
4 hours
24 hours
5 days
7 days
14-which of the following is the most common cause of bacteria
contamination of platelet production ?
entry of skin plugs into the collection bag
environmental contamination during processing
bacterima in the door
incorrect storage temperature
15-which of the following statements best describes mitosis ?
genetic four daughter cells
Medlab quizes
genetic material is duplicated,equally divided between two daughter cells
genetic material is triplicated , equally divided between three daughter
cells .
16-when a recessive trait is expressed , it means that :
one gene carrying tha triat was present
two genes carrying the trait were present
no gene carrying the triat was present
the trait is present but difficult to observe
17-in a pedigree the " index case " is another name for :
Stillbirth
consangutineous mating
proposituse
monozygotic
18-which of the following nitrogenous bases make up DNA ?
adenine,leucine,guanine,thymine
alanine, cytosine, guanine, purine
isoleucene,lysine,uracil,leucine
adenine, cytosine,guanine, thymine
19-proteins and peptides are composed of :
golgi bodies grouped together
paired nitrogenouse bases
nuclear basic particles
linear arrangement of amino acids
20-exon refers to :
the part of the gene that conatin nonsens mutation .
the coding region of a gene
Medlab quizes
the noncoding region of a gene
21-transcription can be defined as :
introduction to DNA into culture cells
reading of mRAN by the ribosome
synthesis of RNA using DNA as a template
22-when a male possesses a phenotype trait that he passes to all his
daughter and none of his sons, the trait is said o be :
X-linked dominant
X-linked recessive
autosomal dominant
autosomal recessive
23-DNA is replicated :
semiconservatively from DNA
in a random manner from RNA
by copying protien sequences fro RNA
24-RNA is processed :
after RNA is copied from DNA template
after protien folding and unfolding on the ribosome
before DNA is copied from DNA template
25-meiosis is necessary to :
keep the N number of the cell consistent within populations
prepare RNA for transcripation
generate now DNA sequences in daughter cells
Medlab quizes
