7451 to 7500 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 7451 to 7500
- Phospholipase C is activated by
- Gs proteins
- Gi proteins
- Gq proteins ✔
- G12 proteins
- Proteoglycans are made up of proteins and
- Glucosamine
- Mannosamine
- Sialic acid
- Mucopolysaccharides ✔
- Sweat chlorides are increased in
- Cystic fibrosis ✔
- Pancreatic cancer
- Acute pancreatitis
- None of these
- All the following statements about cystic fibrosis are correct except
- It is inherited as an autosomal recessive disease
- It affects a number of exocrine glands
- It causes increased sweating ✔
- Sweat chlorides are above 60 mEq/L in this disease
- Radioactive iodine uptake by thyroid gland 24 hours of a test dose is
- 1.5–15% of the test done
- 15–20% of the test done
- 20–40% of the test done ✔
- 50–70% of the test done
- Radioactive iodine uptake by thyroid gland is increased in
- Endemic goitre
- Hyperthyroidism ✔
- Myxoedema
- Creatinism
- Normal range of total thyroxine in serum is
- 0.8–2.4 ng/dl
- 0 .8–2.4 µg/dl
- 5–12 ng/dl
- 5–12 µg/dl ✔
- Administration of TSH increases serum T3 and T4 in
- Hyperthyroidism of pituitary origin
- Hyperthyroidism of thyroid origin
- Hypothyroidism of pituitary origin ✔
- Hypothyroidism of thyroid origin
- High level of T3 and T4 and low TSH in serum indicates
- Hyperthyroidism of pituitary origin
- Hypothyroidism of pituitary origin
- Hyperthyroidism of thyroid origin✔
- Hypothyroidism of thyroid origin
- BMR is increased in
- Endemic goitre
- Thyrotoxicosis✔
- Myxoedema
- Cretinism
- Which one of the following statements correctly describes eukaryotic DNA?
- If uses DNA polymerase with nuclease activities
- It is replicated bidirectionally at many points ✔
- It contains no repetitive DNA
- It is nonlinear
- Which one of the following causes frame shift mutation?
- Transition
- Transversion
- Deletion ✔
- Substitution of purine to pyrimidine
- The second messenger for many hormones is
- ATP
- cyclic AMP ✔
- cGMP
- UTP
- The most potent hormone concerned with the retention of sodium in the body is
- Cortisone
- Aldosterone ✔
- Corticosterone
- Cortisol
- Aspirin blocks the synthesis of
- Prostaglandins only
- Prostacyclins only
- Thromboxanes only
- All of these✔
- Retention of sodium in the body leads to a retention of
- Potassium
- Water ✔
- Potassium and water
- Neither potassium nor water
- cAMP is so called because it is formed during
- TCA cycle
- Urea cycle
- Rhodopsin cycle
- It has a cyclic structure ✔
- Protein bound iodine is _ bound to protein.
- Iodine
- Thyroid hormones✔
- Thyroxine
- Tri iodo thyronine
- In hypophysectonized animals, fasting produces
- Severe hyperglycemia
- Hypoglycemia ✔
- No change in blood sugar
- Mild hyper glycemia
- Calcitomica is antagonist to
- Serotonin
- Thyroxine
- Tri iodo thyronine
- Para thyroid hormone ✔
- There is polyuria without glycosuria in this disorder
- Diabetes insipidus ✔
- Diabetes millitus
- Bronze diabetes
- Juvenile diabetes
- In hyperparathyroidism there is
- Hypocalcemia
- Hypophophatemia ✔
- Hypokalemia
- Hyperkalemia
- Insulin resistance is encountered in
- Addison’s disease
- Hypothyroidism
- Hypopituctarism
- Acromegaly ✔
- Richest source of prostaglandins in a human male is
- Blood
- Urine
- Semen ✔
- C.S.F.
- One of the following is not used as a second messenger by hormones:
- mRNA✔
- cAMP
- Calcium ions
- Myoinisotol 1, 4, 5 triphosphate
- This pancreatic hormone increases the blood-sugar level:
- Insulin
- Glucagon ✔
- Pancreozymin
- Pancreatic polypeptide
- Which one of the following statements is fully correct?
- Hormones are needed in the diet
- Hormones can be elaborated only by endocrine glands
- All the hormones enter the cells and perform their function
- Hormones are substance synthesized in the body in small quantities and control and regulate metabolic events ✔
- T3 is
- Thyroxine
- Triodo thyronine ✔
- Triodo tyrosine
- Reverse tri iodo thyronine
- Whcih of the following hormone is a peptide of less than ten amino acids?
- Insulin
- Growth hormone
- Oxytocin ✔
- Parathyroid hormone
- Tyrosine of thyroglobulin is acted upon by __ to give mono and diiodo tyrosines.
- Potassium Iodide
- Iodine ✔
- Iodide I
- Higher valency state of iodine (I+)
- Whcih of the following hormone does not activate adenylate cyclase?
- Epinephrine
- Glucagon
- Parathyroid hormone
- Insulin ✔
- Pheochromacytoma is a tumor of
- adrenal medulla ✔
- bone
- head of Pancreas
- pituitary
- Which one of the following statements is incorrect?
- Insulin increases glucose phosphorylation
- Insulin increases glycolysis
- Insulin augments HMP shunt
- Insulin promotes gluconeogenesis ✔
- Which of one ring in the structure of the following is aromatic?
- Androgens
- Estrogens ✔
- Cholesterol
- Bile acids
- Which of one of the following is not GUT hormone?
- Motiline
- Secretion
- Gastrin
- Calcitonin✔
- This hormone has disulphide group:
- Glucagon
- Insulin ✔
- T4
- Epinephrine
- The blood sugar raising action of the hormone of suprarenal cortex is due to
- Glyconeogenesis ✔
- Glycogenolysis
- Glucagon like activity
- due to inhibition of glomerular filtration of glucose
- Hyper insulinism can cause coma since
- The chief nutrient for the brain is glucose ✔
- The chief nutrient for the heart is glucose
- The glucostatic role of the liver is damaged
- The kidneys are damaged
- Which of the following property of prostaglandins has been utilized by chinicians in hospital for
- Inducing fever
- Causing inflammation
- Effecting smooth muscle contraction ✔
- Disaggregation of spermatozoa
- A major structural difference between estrogens and androgens is the fact that
- The androgens are usually C21 steroids
- The estrogens are usually digitonin – precipitable
- The androgens have an aromatic ring
- The estrogens have an aromatic ring ✔
- Alloxan can experimentally induce diabetes mellitus due to
- Stimulation of α cells of the islets of langerhans
- Necrosis of the β cells of the islets ✔
- Potentiation of insulinase activity
- Epinephrine like action
- Which of the following alleviates asthma?
- PGE1 only
- PGE1 and PGE2✔
- PGF2
- PGA
- Thyroxine is derived from
- Tyrosine ✔
- Tyranine
- Taurine
- Tryptaine
- Adrneal cortical response is poor in
- Kwashiorkor ✔
- Marasmus
- Fatty liver
- Atherosclerosis
- Protein bound iodine in blood is present to the extent of _ / dL
- 3–8 mg ✔
- 4–8 mg
- 3–8 gm
- 4–8 gm
- Prostaglandins are
- C2 unsaturated acids
- C27 saturated alcohols
- C20 saturated acids✔
- C27 saturated alcohols
- Which of tne of the following scientists has not worked in the field of prostaglandins?
- Voneuler
- Sultan Karim
- Andre robet
- Kendal ✔
- The suffix number in the names of prostaglandins gives the number of
- OH groups
- Double bonds✔
- Acid groups
- Ketoacids
- One of the important functions of prostacyclins is
- Inhibition of platelet aggregation ✔
- Contraction of uterus
- Decrease of gastric secretion
- Relieving osthma
- Vasopressin is also known as
- Antidiabetogenic hormone
- Antidiuretic hormone ✔
- Somatotropic hormone
- Pitoxin
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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