The following are true about the lens:
a. it has a higher concentration of sodium than potassium
b. it has the highest concentration of protein than other organs in the body
c. 90% of proteins in the lens are water-soluble
d. gluthatione is reduced in cataract

1 Answer

Answer :

gluthatione is reduced in cataract

Related questions

Description : In the lens: a. the potassium concentration is higher than that of the sodium b. the majority of the lens protein are water soluble c. glutathione is increased in the presence of cataract d. all above

Last Answer : all above

Description : The human lens: a. has a higher refractive index in the nucleus than the cortex b. contains a higher potassium concentration than the aqueous c. contains a higher concentration of sorbitol in diabetic patient than normal population d. all above

Last Answer : all above

Description : Which of the following statements about extracellular fluid are true? A. The total extracellular fluid volume represents 40% of the body weight. B. The plasma volume constitutes one fourth ... the interstitial fluid. E. The interstitial fluid equilibrates slowly with the other body compartments.

Last Answer : Answer: B DISCUSSION: The total extracellular fluid volume represents 20% of body weight. The plasma volume is approximately 5% of body weight. Sodium is the principal cation. The ... fluid and cerebrospinal fluid, the majority of the interstitial fluid exists as a rapidly equilibrating component

Description : Concentration of the following is higher in intracellular fluid than in extracellular fluid: (A) Sodium (B) Potassium (C) Chloride (D) Bicarbonate

Last Answer : Answer : B

Description : The following are found in higher concentration in the tear than in the serum: a. sodium b. potassium c. Ig G d. glucose

Last Answer : potassium

Description : Which of the following is not soluble in water? (1) Lead Sulphate (2) Zinc sulphate (3) Potassium sulphate (4) Sodium sulphate

Last Answer : (2) Zinc sulphate Explanation: Lead sulfate (PbSO4) is a white crystalline solid. It is insoluble in water and sinks in it. It is often seen in the plates/electrodes of car batteries, as it is ... is discharged. It is also known as fast white, milk white, sulfuric acid lead salt or anglesite.

Description : Which of the following would be least soluble in water? w) Carbon Tetrachloride x) Sodium Oxide y) Magnesium Bromide z) Potassium Phosphate

Last Answer : ANSWER: W -- CARBON TETRACHLORIDE 

Description : Which of the following is not soluble in water ? (1) Lead Sulphate (2) Zinc sulphate (3) Potassium sulphate (4) Sodium sulphate

Last Answer : Zinc sulphate

Description : The following are true about the lens: a. 90% of the weight of the lens is contributed by water b. it has no sensory innervation c. the capsule is thicker posterior than anteriorly d. it has an equatorial diameter of about 15 mm

Last Answer : it has no sensory innervation

Description : A striking feature of living cells is a marked difference between the composition of the cytosol and the extracellular milieu. Which of the following statement(s) concerning the mechanisms of maintenance ... d. The selectivity of cell membranes relates only to ions and not organic compounds

Last Answer : Answer: a The survival of the cell requires that cytosolic composition be maintained within narrow limits, despite the constant influx of nutrients and the simultaneous outflow of waste. A ... be altered drastically as a result of regulatory or signaling processes that occur within the cell

Description : Which of the following statements are true of a patient with hyperglycemia and hyponatremia? A. The sodium concentration must be corrected by 5 mEq. per 100 mg. per 100 ml. elevation in blood ... . E. Early in treatment adequate urine output is a reliable measure of adequate volume resuscitation.

Last Answer : Answer: D DISCUSSION: Each 100-mg. per 100 ml. elevation in blood glucose causes a fall in serum sodium concentration of approximately 2 mEq. per liter. Excess serum glucose ... correction of the patient's associated acidosis produce movement of potassium ions into the intracellular compartment

Description : Cell membranes a. consist almost entirely of protein molecules b. are impermeable to fat-soluble substances c. in some tissues permit the transport of glucose at a greater rate in the presence of ... to electrolytes but not to proteins e. have a stable composition throughout the life of the cell

Last Answer : in some tissues permit the transport of glucose at a greater rate in the presence of insulin

Description : what is the cost of cataract surgery lens implants?

Last Answer : Yes, all moving services offer this. They make money by packing your belongings and taking them to where you want to go. This will probably cost between $500-$1000

Description : Which of the following terms refers to the absence of the natural lens? a) Aphakia When a cataract is extracted, and an intraocular lens implant is not used, the patient demonstrates aphakia. b) ... deformity of the cornea. d) Hyphema Hyphema refers to blood in the anterior chamber of the eye.

Last Answer : a) Aphakia When a cataract is extracted, and an intraocular lens implant is not used, the patient demonstrates aphakia.

Description : Which of the following terms refers to the decrease in lens flexibility that occurs with age, resulting in the near point of focus getting farther away? a) Presbyopia Presbyopia usually begins in ... lens of the eye. d) Glaucoma Glaucoma is a disease characterized by increased intraocular pressure.

Last Answer : a) Presbyopia Presbyopia usually begins in the fifth decade of life, when reading glasses are required to magnify objects.

Description : Earliest visual rehabilitation occurs with: a. Phacoemulsification plus intraocular lens implantation b. Intracapsular cataract extraction plus intraocular lens implantation c. Extracapsular cataract extraction plus intraocular lens implantation d. Small incision cataract extraction

Last Answer : ANSWER: A

Description : Lens induced glaucoma is least likely to occur in: a. Intumescent cataract. b. Anterior lens dislocation, c. Posterior subcapsular cataract d. Posterior lens dislocation

Last Answer : ANSWER: C

Description : According to the accepted concept of hormone action, if receptor molecules are removed from target organs, then the target organ will (a) continue to respond to the hormone without any difference ( ... require higher concentration (d) continue to respond to the hormone but in the opposite way.

Last Answer : (b) not respond to the hormone

Description : Human urine is usually acidic because (a) potassium and sodium exchange generates acidity (b) hydrogen ions are actively secreted into the filtrate (c) the sodium transporter exchanges one hydrogen ion for each sodium ion, in peritubular capillaries (d) excreted plasma proteins are acidic.

Last Answer : (b) hydrogen ions are actively secreted into the filtrate

Description : . Sodium or potassium salts of fatty acids are called (a) Proteins (b) Terpenes (c) Carbohydrates (d) Soaps

Last Answer : Soaps

Description : The following have a lower concentration in the cerebrospinal fluid (CSF) than plasma: a. glucose b. sodium c. potassium d. magnesium

Last Answer : magnesium

Description : Highest auxin concentration occurs (a) in growing tips (b) in leaves (c) at base of plant organs (d) in xylem and phloem

Last Answer : (a) in growing tips

Description : Due to a rise in temperature, the viscosity and the unit weight of the percolating fluid are reduced to 60% and 90% respectively. If other things remain constant, the coefficient of permeability (A) Increases by 25 % (B) Increases by 50 % (C) Increases by 33.3 % (D) Decreases by 33.3 %

Last Answer : (B) Increases by 50 %

Description : What process does the higher concentration of potassium than the surrounding blood plasma?

Last Answer : Feel Free to Answer

Description : True statements about the aqueous humour: a. has a higher lactic acid concentration than in the plasma b. the glucose levels is lower than that of the plasma levels c. the ascorbic acid ... same concentration of protein as in the plasma e. the rate of formation is about 2.5ul/minute

Last Answer : has a higher lactic acid concentration than in the plasma

Description : One of the potent st imu lators of aldosterone secretion is (A) Increased sodium concentration (B) Decreased potassium concentration (C) Increased potassium concentration (D) Increased ECF volume

Last Answer : Answer : C

Description : Which one of the following is characteristic of captopril and enalapril ? (a) Competitively blocks angiotensim II at its receptor (b) Decreases angiotensin II concentration in the blood (c) Decreases ... and decreases potassium in the blood (e) Decreases sodium and increases potassium in the urine

Last Answer : Ans: B

Description : Aldosterone secretion is controlled by: a. plasma sodium concentration b. plasma calcium concentration c. plasma potassium concentration d. angiotensin II

Last Answer : angiotensin II

Description : The following occur in response to a major surgery: a. increased potassium loss b. increased protein breakdown c. sodium and water retention d. all above

Last Answer : all above

Description : In the regulation of genes: a. more than 90% of the base sequences in human DNA have not known function b. extrons are the part of the gene that code for amino acids found in the final proteins. c. introns usually begins with the nucleotide sequence GT d. all above

Last Answer : all above

Description : In trickling filter, B.O.D. is reduced to A. 30 to 40% B. 40 to 60% C. 60 to 80% D. 80 to 90%

Last Answer : ANS: C

Description : The moisture content of sludge is reduced from 90% to 80% in a sludge digestion tank. The percentage decrease in the volume of sludge, is A. 25 % B. 50 % C. 10 % D. 5 %

Last Answer : ANS: B

Description : Synthetic detergents are prepared from (1) potassium salts of higher fatty-acids (2) sodium salts of higher fat acids (3) hydrocarbons of petroleum (4) glycerides

Last Answer : (3) hydrocarbons of petroleum Explanation: Synthetic detergents are prepared from hydrocarbons of petroleum. They are sodium salts of long chain benzene sulphonic acids or sodium salts of long chain ... are soluble in water. Therefore cleansing action of detergents remains unaffected in hard water.

Description : Synthetic detergents are prepared from (1) potassium salts of higher fatty-acids (2) sodium salts of higher fattyacids (3) hydrocarbons of petroleum (4) glycerides

Last Answer : hydrocarbons of petroleum

Description : Concentration of H2SO4 catalyst in alkylation is kept between 90-98%, because H2SO4 having concentration. (A) Less than 90% promotes polymerisation (B) More than 98% promotes cracking (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

Description : All of the following statements about uric acid are true except (A) It is a catabolite of purines (B) It is excreted by the kidneys (C) It is undissociated at pH above 5.8 (D) It is less soluble than sodium urate

Last Answer : Answer : C

Description : Which of the following liquid metals has the highest thermal conductivity? (A) Molten sodium (B) Molten lead (C) Mercury (D) Molten potassium

Last Answer : (A) Molten sodium

Description : The highest concentration of proteins is present in (A) Plasma (B) Interstitial fluid (C) Interstitial fluid (D) Transcellular fluid

Last Answer : Answer : C

Description : Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium bicarbonate (A) Is prone to thermal decomposition (B) Has high water solubility and is unstable (C) Is soluble in ammonium chloride and potassium chloride solution (D) All (A), (B) and (C)

Last Answer : (C) Is soluble in ammonium chloride and potassium chloride solution

Description : The mineral present in the human body in larger amounts than any other cation is (A) Sodium (B) Calcium (C) Potassium (D) Iron

Last Answer : Answer : B

Description : With regard to the vitreous: a. its water content is about 90% b. its volume is about 5ml in each eye c. its viscosity increases with age d. its viscosity is contributed by the presence of sodium hyaluronate

Last Answer : its viscosity is contributed by the presence of sodium hyaluronate

Description : Which of the following statements about nerve growth factor is not true a. it is made up of 3 polypeptide subunits b. it is found in high concentration in the submaxillary salivery gland c. it is picked up by nerves from the organs they innervate d. it is present in brain

Last Answer : it is found in high concentration in the submaxillary salivery gland

Description : Use of an artificial kidney during hemodialysis may result in (A) Nitrogenous waste build-up in the body (B) Non-elimination of excess potassium ions (C) Reduced absorption of calcium ions from gastro-intestinal tract (D) ... are correct. (c) (B) and (C) are correct. (d) (C) and (D) are correct.

Last Answer : d) (C) and (D) are correct.

Description : Sodium ions are "pumped" from a region of lower concentration to a region of higher concentration in the nerve cells of humans. This process is an example of (A) Diffusion (B) Passive transport (C) Osmosis (D) Active transport

Last Answer : (D) Active transport

Description : The following has the highest protein efficiency ratio: (A) Milk proteins (B) Egg proteins (C) Meat proteins (D) Fish proteins

Last Answer : Answer : B

Description : Which of the following statement(s) is/are true concerning protein/amino acid metabolism in man? a. The major source of amino acids is breakdown of circulating proteins b. The recommended daily ... balance refers to a decrease in nitrogen taken into the body versus the amount of nitrogen lost

Last Answer : Answer: b, d About 15% of the total body weight is made up of proteins, about half of which are intracellular and half extracellular. In man and other animals, dietary protein is the source of ... is exceeded by the amount of nitrogen lost in the urine, stool, skin, wounds, and fistula drainage

Description : Sodium fluorescein: a. has a higher affinity for plasma protein than indocyanine green. b. does not leak from the choroidal vasculature. c. does not leak from normal retinal vasculature. d. emits light of longer wavelengths than the one it absorbs

Last Answer : does not leak from normal retinal vasculature.

Description : Compared with intracellular fluid, extracellular fluid has, a. a greater osmolarity b. a higher protein concentration c. a lower chloride ion concentration d. a lower hydrogen ion concentration

Last Answer : a lower hydrogen ion concentration

Description : Silver halides are used in photographic plates because they are (a) Oxidised in air (b) Colourless (c) Easily soluble in a hypo solution (d) Readily reduced by light

Last Answer : Ans:(d)

Description : Silver halides are used in photographic plates because they are - (1) oxidised in air (2) soluble in hyposolution (3) reduced by light (4) totally colourless

Last Answer : (3) reduced by light Explanation: The light-sensitive chemicals used in photographic film and paper are silver halides. Silver halides are used in photographic film and photographic paper, including ... - meaning that it can undergo development which turns the entire crystal into metallic silver.