5451 to 5500 MCQs for Lab Technician and Technologist Exam Preparation
5000 Plus MCQs for Lab Technician and Technologists are designed to test the knowledge and proficiency of laboratory professionals who work in the field of clinical laboratory science. These questions cover a wide range of topics related to laboratory science, including anatomy, physiology, microbiology, chemistry, and hematology.
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Questions 5451 to 5500
- The metabolism of protein is integrated with that of carbohydrate and fat through
- Oxaloacetate✔
- Citrate
- Isocitrate
- Malate
- The building up and breaking down of protoplasm are concerned with the metabolism of
- Carbohydrate
- Lipid
- Protein✔
- Minerals
- The amino acids abstracted from the liver are not utilized for repair or special synthesis but are broken down to
- Keto acids
- Sulphur dioxide
- Water
- Ammonia✔
- The unwanted amino acids abstracted from the tissues are either used up by the tissue or in the liver converted into
- Ammonia
- Urea✔
- Ammonium salts
- Uric acid
- The metabolism of all proteins ingested over and above the essential requirements is called
- Exogenous metabolism✔
- Endogenous metabolism
- Both (Exogenous metabolism) and (Endogenous metabolism)
- None of these
- Sulphur containing amino acids after catabolism produces a substance which is excreted:
- SO2
- HNO3
- H2SO4✔
- H3PO4
- Ethereal sulphate is synthesized from the _ amino acid.
- Neutral
- Acidic
- Basic
- Sulphur containing✔
- The amino acids required for creatine formation:
- Glycine
- Arginine
- Methionine
- All of these✔
- In human and other ureotelic organisms, the end product of amino acid nitrogen metabolism:
- Bile acids
- Ketone bodies
- Urea✔
- Barium sulphate
- The end product of amino acid nitrogen metabolism in uricotelic organisms (reptiles and birds) is
- Bilirubin
- Urea
- Uric acid✔
- Biliverdin
- The transaminase activity needs the coenzyme:
- ATP
- B6 – PO4✔
- FAD+
- NAD+
- Transamination is a
- Irreversible process
- Reversible process✔
- Both (Irreversible process) and (Reversible process)
- None of these
- Most amino acids are substrates for transamination except
- Alanine
- Threonine✔
- Serine
- Valine
- Oxidative conversion of many amino acids to their corresponding -ketoacids occurs in mammalian:
- Liver and kidney✔
- Adipose tissue
- Pancreas
- Intestine
- The α-ketoacid is decarboxylated by H2O2 forming a carboxylic acid with one carbon atom less in the absence of the enzyme:
- Catalase✔
- Decarboxylase
- Deaminase
- Phosphatase
- The activity of mammalian L-amino acid oxidase, an FMN – flavo protein, is quite
- Slow✔
- Rapid
- Both (Slow ) and (Rapid)
- None of these
- From dietary protein as well as from the urea present in fluids secreted into the gastrointestinal tract intestinal bacteria produce
- Carbondioxide
- Ammonia✔
- Ammonium sulphate
- Creatine
- The symptom of ammonia intoxication includes
- Blurring of vision
- Constipation
- Mental confusion✔
- Diarrhoea
- Ammonia intoxication symptoms occur when brain ammonia levels are
- Slightly diminished
- Highly diminished
- Increased✔
- All of these
- Ammonia production by the kidney is depressed in
- Acidosis
- Alkalosis✔
- Both (Acidosis ) and (Alkalosis)
- None of these
- Ammonia is excreted as ammonium salts during metabolic acidosis but the majority is excreted as
- Phosphates
- Creatine
- Uric acid
- Urea✔
- Synthesis of glutamine is accompanied by the hydrolysis of
- ATP✔
- ADP
- TPP
- Creatin phosphate
- In brain, the major metabolism for removal of ammonia is the formation of
- Glutamate
- Aspartate
- Asparagine
- Glutamine✔
- Carbamoyl phosphate synthetase structure is marked by change in the presence of
- N-Acetyl glutamate✔
- N-Acetyl Aspartate
- Neuraminic acid
- Oxalate
- The biosynthesis of Urea occurs mainly in the Liver:
- Cytosol
- Microsomes
- Nucleus
- Mitochondria✔
- One mol. of Urea is synthesized at the expense of the _ mols. of ATP.
- 2
- 3
- 4✔
- 5
- The normal daily output of Urea through urine in grams:
- 10 to 20
- 15 to 25
- 20 to 30✔
- 25 to 35
- In severe acidosis, the output of urea is
- Decreased✔
- Slightly increased
- Highly increased
- Moderately increased
- Uremia occurs in
- Cirrhosis of the liver
- Nephritis✔
- Diabetes mellitus
- Coronary thrombosis
- Clinical symptom in urea cycle disorder is
- Mental retardation✔
- Drowsiness
- Diarrhoea
- Oedema
- The sparing action of methionine is
- Tyrosine
- Cystine✔
- Arginine
- Tryptophan
- NH+ 4 aminates glutamate to form glutamine requiring ATP and
- K+
- Na+
- Ca++
- Mg++✔
- Glutathione is a
- Dipeptide
- Tripeptide✔
- Polypeptide
- None of thes
- All following are conjugated proteins except
- Nucleoproteins
- Proteoses✔
- Metalloproteins
- Flavoproteins
- All α-amino acids have one asymmetric carbon atom except
- Arginine
- Glycine✔
- Aspartic acid
- Histidine
- Number of amino acids present in plants, animals and microbial proteins:
- 20✔
- 80
- 150
- 200
- Hydrated density of (HD) lipoproteins is
- 0.94 gm/ml
- 0.94-1.006 gm/ml
- 1.006-1.063 gm/ml✔
- 1.063-1.21 gm/l
- The bond in proteins that is not broken under usual conditions of denaturation:
- Hydrophobic bond
- Hydrogen bond
- Disulphide bond
- Peptide bonds✔
- Plasma proteins act as
- Buffers
- Immunoglobulins
- Reserve proteins
- All of these✔
- Group that reacts in the Biuret test:
- Peptide✔
- Amino group
- Carboxylic group
- Aldehyde group
- In nitroprusside test, amino acid cysteine produces a:
- Red colour✔
- Blue colour
- Yellow colour
- Purple colour
- Protein present in hemoglobin has the structure known as
- Primary
- Secondary
- Tertiary
- Quarternary✔
- Isoelectric pH of an amino acid is that pH at which it has a
- Positive charge
- Negative charge
- Nil net charge✔
- None of these
- Albuminoids are similar to
- Albumin✔
- Globulin
- Both (Albumin) and (Globulin)
- None of these
- Optical isomers of all aminoacids exist except
- Glycine✔
- Arginine
- Alanine
- Hydroxy proline
- Proteins that constitute keratin, collagen and elastin in body are
- Protamines
- Phosphol proteins
- Scleroproteins✔
- Metaproteins
- Systematic name of lysine is
- Amino acetic acid
- 2,6 diaminohexanoic acid✔
- Aminosuccinic acid
- 2-Aminopropanoic acid
- Side chains of all following amino acids contain aromatic rings except
- Phenyl alanine
- Alanine✔
- Tyrosine
- Tryptophan
- Abnormal chain of amino acids in sickle cell anaemia is
- Alpha chain
- Beta chain✔
- Delta chain
- Gama chain
- Number of chains in globin part of normal Hb:
- 1
- 2
- 3
- 4✔
The questions are typically designed to assess the technical skills and knowledge required for the laboratory profession, including the ability to analyze laboratory test results, perform laboratory procedures, and maintain laboratory equipment.
To prepare for these MCQs, candidates should have a thorough understanding of the key concepts and principles of laboratory science. They should also be familiar with common laboratory equipment and procedures, as well as laboratory safety protocols.
Candidates may also benefit from studying specific laboratory science textbooks or taking online courses that cover the material tested in the MCQs. Additionally, practicing sample MCQs and reviewing the answers can help candidates identify areas where they may need to improve their knowledge or skills.
Overall, the MCQs for lab technologists are designed to be challenging and comprehensive, requiring candidates to demonstrate a high level of proficiency in the field of laboratory science.
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