Description : A 55 year-old female complaining of vague tiredness is found to have a serum corrected calcium concentration of 2.9 mmol/l. Examination was unremarkable. Which of the following results ... 4) Low normal plasma phosphate concentration 5) Low normal serum 25-hydroxyvitamin D concentration
Last Answer : Answers-3 Bit too easy really. A high or even normal PTH concentration in the presence of hypercalcaemia would support the diagnosis of hyperparathyroidism. A high urinary Calcium concentration may ... but neither confirm the diagnosis. Elevated 1,25 VitD suggests a diagnosis of hypervitaminosis D.
Description : What is non-functional enzymes in plasma?
Last Answer : They are coming out from cells due to normal wear and tear.
Description : A non-functional plasma enzyme is (A) Psudocholinesterase (B) Lipoprotein lipase (C) Proenzyme of blood coagulation (D) Lipase
Last Answer : Answer : D
Description : A condition in which either pollen is absent or non functional in flowering plants.
Last Answer : Ans. Male Sterility
Description : What are the serum enzymes helpful in the diagnosis of myocardial infarction?
Last Answer : Lactate dehydrogenase (LDH) H4 iso-enzyme, creatine kinase (CK) CK MB iso-enzyme and aspartyl transaminase (AST).
Description : A demonstrable inducer is absent in (A) Allosteric enzyme (B) Constitutive enzyme (C) Inhibited enzyme (D) Co-operative enzyme ENZYMES 141
Last Answer : Answer : B
Description : An early diagnosis of vitamin C deficiency can be made by (A) Measuring plasma ascorbic acid (B) Measuring urinary ascorbic acid (C) Ascorbic acid saturation test (D) All of these
Last Answer : Answer : C
Description : An 16-year-old man presents with polyuria and polydipsia. Which of the following may confirm the diagnosis of diabetes mellitus? 1) A random plasma glucose of >7.5 mmol/L 2) A finding of 3+ ketonuria 3) An HbA1c of 7.0% 4) A fasting plasma glucose of 7.5 mmol/L 5) An abnormal glucose tolerance test
Last Answer : Answers-4 The diagnosis is usually relatively easy to confirm in a symptomatic subject. A random glucose of >11.1 mmol/L or a fasting glucose of >7.0 mmol/L would be regarded as ... haemoglobin (HbA1c) is also highly suggestive but not diagnostic. A glucose tolerance test is rarely needed.
Description : In myasthenia gravis: a. the vertical muscles of the eye are more commonly involved than the horizontal muscles b. the pupil reaction to light is sluggish c. absent antibody to acetylcholine receptors exclude the diagnosis d. Cogan's twitch refers to involuntary twitching of the orbicularis
Last Answer : the vertical muscles of the eye are more commonly involved than the horizontal muscles
Description : The layer where the decrease in temperature with increasing altitude is totally absent is – (1) Troposphere (2) Ionosphere (3) Stratosphere (4) Mesosphere
Last Answer : (3) Stratosphere Explanation: The stratosphere defines a layer in which temperatures rises with increasing altitude. At the top of the stratosphere the thin air may attain temperatures close to ... . Consequently, the stratosphere is almost completely free of clouds or other forms of weather.
Description : Which one of the following statements is totally wrong about the occurrence of notochord, while the other three are correct? (a) It is present only in larval tail in ascidian. (b) It is ... absent throughout life in humans from the very beginning. (d) It is present throughout life in Amphioxus.
Last Answer : (c) It is absent throughout life in humans from the very beginning.
Description : The layer where the decrease in temperature with increasing altitude is totally absent is (1) Troposphere (2) Ionosphere (3) Stratosphere (4) Mesosphere
Last Answer : Stratosphere
Description : Glycolate induces opening of stomata in (a) presence of oxygen (b) low CO2 concentration (c) high CO2 (d) CO2 absent.
Last Answer : (b) low CO2 concentration
Description : Enzymes functional in cell or mitochondria are (A) Endoenzymes (B) Exoenzymes (C) Apoenzymes (D) Holoenzymes
Last Answer : Answer : A
Description : Enzymes are different from catalysts in (A) Being proteinaceous (B) Not used up in reaction (C) Functional at high temperature (D) Having high rate of diffusion
Description : Enzymes which are always present in an organism are known as (A) Inducible enzymes (B) Constitutive enzymes (C) Functional enzymes (D) Apoenzymes
Description : If all the enzymes, intermediates and cofactors of the citric acid cycle as well as an excess of the starting substrate acetylCoA are present and functional in an organelle free solution at the appropriate ... oxygen (B) Half life of enzyme (C) Turnover of intermediates (D) Reduction of cofactors
Description : Answer: e The role of nutritional support in the cancer patient remains an important component of overall therapy. Preoperative nutritional support should be given only to those patients who ... of bowel rest; this atrophy is not reversed by currently available total parenteral nutrition solutions
Last Answer : Which of the following hormones can be expected to be released as part of the stress response? a. Antidiuretic hormone (ADH) b. Aldosterone c. Insulin d. Epinephrine nswer: a, b, d ... This hormone has the exact opposite effect of insulin, which promotes glucose storage and uptake by the cells
Description : If for some reason the parietal cells of the gut epithelium become partially non-functional, what is likely to happen? (a) The pancreatic enzymes and specially the trypsin and lipase will ... more effective. (d) Proteins will not be adequately hydrolysed by pepsin into proteoses and peptones.
Last Answer : (d) Proteins will not be adequately hydrolysed by pepsin into proteoses and peptones.
Description : The process of self-digestion of selective non-functional organelles by a cell through the action of enzymes originating within the cell is referred to as (A) Pinocytosis (B) Endocytosis (C) Autophagy (D) Cytotoxicity
Last Answer : (C) Autophagy
Description : An example of functional plasma enzyme is (A) Lipoprotein lipase (B) Amylase (C) Aminotransferase (D) Lactate dehydrogenase
Description : The primary biochemical lesion in homozygote with familial hypercholesterolemia (type IIa) is (A) Loss of feed back inhibition of HMG reductase (B) Loss of apolipoprotein B (C) Increased production of LDL from VLDL (D) Functional deficiency of plasma membrane receptors for LDL
Description : Which is a functional enzyme in plasma?
Last Answer : They are actively secreted into plasma, and have some functions in the blood. For example, enzymes of blood coagulation.
Description : The plasma half life of pencillin-G is longer in the new born because their (a) Plasma protein level is low (b) Drug metabolizing enzymes are immature (c) Glomerular filtration rate is low (d) Tubular transport mechanisms are not well developed
Last Answer : Ans: D
Description : The plasma half life of penicillin-G is longer in the new born because their: A. Plasma protein level is low B. Drug metabolizing enzymes are immature C. Glomerular filtration rate is low D. Tubular transport mechanisms are not well developed
Last Answer : D. Tubular transport mechanisms are not well developed
Description : All of the following are true of Wilson’s disease except (A) Low total plasma Cu (B) Elevated urinary copper (C) Arthritis (D) Aminoaciduria
Description : Menke’s disease (Kinky or steel hair disease) is a X-linked disease characterized by (A) High levels of plasma copper (B) High levels of ceruloplasmin (C) Low levels of plasma copper and of ceuloplasmin (D) High level of hepatic copper
Description : I'm always confused, I'm either constantly daydreaming or sleeping, I can't read a book without compulsively opening up several others and end up totally lost and depressed. I need help, someone?
Last Answer : do you have a job?
Description : Isoenzymes of lactate dehydrogenase are useful for the diagnosis of (A) Heart disease (B) Kidney disease (C) Liver disease (D) Both (A) and (C)
Description : Which of the following suggests a diagnosis of familial combined hyperlipidaemia (FCHL) rather than heterozygous familial hypercholesterolaemia (FH)? 1) Tendon xanthomas 2) Presence of glucose ... premature coronary artery disease 4) Presence of arcus senilus 5) Absence of hyperuricaemia
Last Answer : Answers-2 The genetic dislipidaemias occur in one third of patients who have suffered from their first myocardial infarction below the age of 50 years in men. The commonest is familial combined ... xanthomata and arcus cornea are rarely present in children, but are very important signs to identify.
Description : Which of the following techniques would be most useful in the differential diagnosis between ectopic Cushing's syndrome and pituitary dependent Cushing's disease. 1) Urine free cortisol 2) ... Dexamethasone suppression test 3) ACTH concentrations 4) Inferior petrosal sinus sampling 5) CRF test
Last Answer : Answers-4 Inferior petrosal sinus sampling with an elevated central ACTH concentration compared with the peripheral value is the most valuable test in the differential diagnosis of either Cushing's disease or ectopic Cushing's syndrome. The other tests are far less useful in comparison.
Description : A 68-year-old male who underwent a repair of an abdominal aortic aneurysm 5 days ago, develops tachycardia, tachypnea, hypotension with cool, pale, mottled cyanotic extremities. He ... use of moderate doses of inotropic agents e. Afterload reduction with nitroprusside is absolutely contraindicated
Last Answer : Answer: a, b, d Intrinsic cardiogenic shock results from failure of the heart as an effective pump. Coronary artery disease is the most common cause of myocardial ... hemodynamic monitoring. Infusion of afterload-reducing agents can be administered in conjunction with inotropic support
Description : The plasma protein bound fraction of a drug: A. Contributes to the response at the given moment B. Remains constant irrespective of the total drug concentration C. Remains constant irrespective of the disease state D. Is not available for metabolism unless actively extracted by the liver
Last Answer : D. Is not available for metabolism unless actively extracted by the liver
Description : The rate of an enzyme catalyzed reaction was measured using several substrate concentrations that were much lower than Km, the dependence of reaction velocity on substrate concentration can best be ... constant fraction of Vmax (C) Equal to Km (D) Proportional to the substrate concentration
Description : In `C_(4)`-Plants, Calvin cycle enzymes are absent in
Last Answer : In `C_(4)`-Plants, Calvin cycle enzymes are absent in A. Mesophyll chloroplasts B. ... C. Guard cell chloroplasts D. Epidermal chloroplasts
Description : Enzymes are absent in – (1) fungi (2) bacteria (3) viruses (4) algae
Last Answer : (3) viruses
Description : Bilirubin UDP-glucuronyl transferase is absent from liver in (A) Crigler-Najjar syndrome, type I (B) Gilbert’s disease (C) Crigler-Najjar syndrome, type II (D) Rotor’s syndrome
Description : Ceruloplasmin is absent in (A) Cirrhosis of liver (B) Wilson’s disease (C) Menke’s disease (D) Copper deficiency
Description : Debranching enzyme is absent in (A) Cori’s disease (B) Andersen’s disease (C) Von Gierke’s disease (D) Her’s disease
Last Answer : A
Description : Glucose-6-phosphatase is absent or deficient in (A) Von Gierke’s disease (B) Pompe’s disease (C) Cori’s disease (D) McArdle’s disease
Description : The rapid plasma reagin test and VDRL test are both used _____. a. In The Diagnosis Of Syphilis. b. To Detect Toxic Shock Syndrome. c. To Gauge The Extent Of Dental Decay. d. To Distinguish Ureaplasmal And Mycoplasmal Urethritis.
Last Answer : a. In The Diagnosis Of Syphilis.
Description : A middle aged female presented with following symptoms - Hirsutism, fragility of skin, with easy bruising, broad purplish striae and signs of proximal myopathy. The first step in ... Exclude exogenous Glucocorticoid use 3) Advice plasma ACTH estimation 4) Advice dexamethasone overnight test
Last Answer : Correct Answer: 2) Exclude exogenous Glucocorticoid use
Description : Structure absent from fresh frozen blood plasma is
Last Answer : Structure absent from fresh frozen blood plasma is A. Immunoglobulin B. Plasma C. Albumin D. Platelets
Description : Glycocylated haemoglobin: a. is absent in the plasma of people without diabetes mellitus b. results from the combination of a HbA and a sugar c. when measured as HbA1c in plasma gives a more accurate retrospective estimates of blood sugar levels than other glycosylated products d. all above
Last Answer : all above
Description : The fruit when kept is open, tastes bitter after 2 hours because of (A) Loss of water from juice (B) Decreased concentration of fructose in juice (C) Fermentation by yeast (D) Contamination by bacterial enzymes
Description : Enzymes activity is controlled by (A) pH of the solution (B) Temperature (C) Concentration of the enzyme (D) Concentration of the substrate (E) All of these
Description : Lineweaver – Burk double reciprocal plot is related to (A) Substrate concentration (B) Enzyme activity (C) Temperature (D) Both (A) and (B) ENZYMES 145