Description : Why is fish patka called semi-permeable screen ?
Last Answer : A screen through which only solvent molecules of a solution can move but solvent molecules cannot move is called semipermeable screen. Since the solvent molecule can move through the fish fillet but the solvent molecule cannot move, the fish fillet is called semipermeable screen.
Description : Which cell acts as a semi-permeable screen in a cell ?
Last Answer : Answer : The plasma membrane in a cell acts as a semipermeable membrane.
Description : What is a semi-permeable membrane? -Biology
Last Answer : answer:
Description : Why is the cell membrane considered a semi-permeable membrane? -Biology
Description : A tube of uniform cross sectional sectional area `1 cm^(2)` is closed at one end with semi permeable membrane. A solution having 6g glucose per 100 ml
Last Answer : A tube of uniform cross sectional sectional area `1 cm^(2)` is closed at one end with semi permeable membrane. A ... k^(-1)`, density of Hg=13.8 g/cc)
Description : $ Positive diffusion occurs against the concentration gradients. ! Osmosis does not require a semi-permeable membrane.
Last Answer : $ Positive diffusion occurs against the concentration gradients. ! Osmosis does not require a semi-permeable ... D. If both As and R are wrong.
Description : What do the terms selective permeability and semi permeable to have to do with the cell membrane?
Last Answer : Need answer
Description : The haemodialyzer has semi-permeable lining of tubes which help to: (a) To maintain osmotic pressure of blood. (b) To filter nitrogenous wastes from the dialyzing solution. (c) In passing the waste product, in the dialyzing solution. (d) To pump purified blood back into the body of the patient.
Last Answer : (c) In passing the waste product, in the dialyzing solution.
Description : In all cells the cytoplasm is externally bounded by a semi - permeable membrane. It is known 4s ..........0+5
Last Answer : Cell membrane/Plasma membrane
Description : The process of diffusion of one liquid into the other through a semi permeable membrane is called (A) Viscosity (B) Osmosis (C) Surface tension (D) Cohesion
Last Answer : Answer: Option B
Description : Which cell organelle is semi-permeable?
Last Answer : Plasma membrane
Description : A semi permeable membrane is stretched across a chamber filled with water. The membrane is only permeable to water. 60 mg of salt is added to the left side of the chamber. Which of the following will ... right side (C) Water will move toward the left side (D) salt will move toward the left side
Last Answer : (C) Water will move toward the left side
Description : what is a selectively permeable membrane -Biology
Description : What is the selectively permeable membrane of the cell? -Do You Know?
Description : what is gas-permeable?
Last Answer : Gas-permeable contact lenses are rigid lenses made of durable plastics that allow oxygen to pass through the lens .These lenses also are called GP lenses.
Description : What for the ascending limb of Loop of Henle is permeable
Last Answer : What for the ascending limb of Loop of Henle is permeable A. Glucose B. `NH_(3)` and `CO_(2)` C. `Na^(+)` D. Water
Description : $ The cell membrane helps in pinocytosis and phagocytosis. ! Cell membrane is permeable.
Last Answer : $ The cell membrane helps in pinocytosis and phagocytosis. ! Cell membrane is permeable. A. If both As and ... wrong D. If both As and R are wrong.
Description : What is permeable weathering?
Description : What is formed when groundwater pool between a permeable layer and impermeable layer?
Last Answer : An aquifer forms when groundwater pools between a permeable layer and an impermeable layer.
Description : What is the meaning of selectivity permeable?
Last Answer : Selective permeability refers to the function of plasmamembranes that is needed to maintain homeostasis in a cell andprevent foriegn substances from entering through the cellswalls.Some molecules can pass, some are blocked
Description : What is the process in which water moves from an area of high concentration to an area of low concentration across a selectivity permeable membrane?
Description : Is a granite permeable?
Last Answer : No, being crystallized from liquid magma there are virtually nopore spaces so it has a low porosity and fluids can not flowthrough it very easily. However granite usually has lage openjoints in it (a result of the shrinkage during cooling) and thesedo allow water to flow.
Description : What causes gas permeable lenses to be blurry?
Last Answer : I would make an appointment with your eye doctor to have him/her check to see what the problem is. That doesn't sound like it is going to be good for your eyes.
Description : Mitochondrial membrane is permeable to (A) Short chain fatty acids (B) Medium chain fatty acids (C) Long chain fatty acids (D) All of these
Last Answer : Answer : A
Description : A lipid bilayer is permeable to (A) Urea (B) Fructose (C) Glucose (D) Potassium
Last Answer : A
Description : Methicillin resistant staphylococci do not respond to ß-lactam antibiotics because (a) They produce a ß-lactamase which destroys methicillin and related drugs (b) They elaborate an amidase which destroys ... low affinity for ß-lactam antibiotics (d) They are less permeable to ß-lactam antibiotics
Last Answer : Ans: C
Description : Which of the substances listed can be used to shield sensitive equipment from static magnetic fields? A. Glass B. Mica C. Bakelite D. Permeable iron
Last Answer : Answer: D
Description : Synthetic rubber (A) Deforms, if stretched to double of its original dimension (B) Is brittle at low temperature (C) Is softer at higher temperature (D) Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases
Last Answer : (D) Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases
Description : What is selectively permeable membrane?
Last Answer : A membrane which controls the movement of materials passing through it is called a selectively permeable membrane. It allows some but not all substances to pass through it.
Description : The following are true about blood-brain barrier: a. it is permeable at birth b. it involves tight junction between endothelial cells and end feet processes of astrocytes c. it is absent in the posterior pituitary d. all above
Last Answer : all above
Description : The blood - brain barrier: a. is permeable to bilirubin at birth b. is formed by the tight junctions between endothlial cells and the end feet processes of astrocytes c. is permeable to glucose d. all above
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 : Plasma membrane in resting condition is very permeable to a. K b. Cl c. Both d. None of them
Last Answer : Cl
Description : When a neuron is in resting state i.e., not conducting any impulse, the axonal membrane is (a) comparatively more permeable to Na+ ions and nearly impermeable to K+ ions (b) equally permeable to both ... + and K+ ions (d) comparatively more permeable to K+ ions and nearly impermeable to Na+ ions.
Last Answer : (d) comparatively more permeable to K+ ions and nearly impermeable to Na+ ions.
Description : Which of the following statements is correct? (a) The descending limb of loop of Henle is impermeable to water. (b) The ascending limb of loop of Henle is permeable to water. (c) The ... Henle is permeable to electrolytes. (d) The ascending limb of loop of Henle is impermeable to water.
Last Answer : (d) The ascending limb of loop of Henle is impermeable to water.
Description : By which action a seed coat becomes permeable to water? (a) Scarification (b) Stratification (c) Vernalization (d) All of these
Last Answer : (a) Scarification
Description : Which of the following statements regarding mitochondrial membrane is not correct ? (a) The outer membrane resembles a sieve. (b) The outer membrane is permeable to all kinds of molecules. (c) ... in the outer membrane. (d) The inner membrane is highly convoluted forming a series of infoldings.
Last Answer : (c) The enzymes of the electron transfer chain are embedded in the outer membrane.
Description : Which of the following statements regarding mitochondria is incorrect? (a) Mitochondrial matrix contains single circular DNA molecule and ribosomes. (b) Outer membrane is permeable to monomers of ... transport are embedded in outer membrane. (d) Inner membrane is convoluted with infoldings.
Last Answer : (c) Enzymes of electron transport are embedded in outer membrane.
Description : This antihelminthic agent makes the membrane permeable to calcium ions. a. Mebendazole b. Pentamidine c. Ivermectin. d. Praziquantel
Last Answer : d. Praziquantel
Description : Shales are (A) Porous (B) Permeable (C) Porous and permeable (D) Porous but not permeable
Last Answer : (D) Porous but not permeable
Description : What is the selectively permeable membrane of the cell?
Last Answer : Plasma lemma
Description : Pick up the correct statement from the following: (A) Sand consists of coarse particles of silica formed due to the disintegration of rocks (B) The grains of sand are not affected by frost (C) Sand ... and do not allow water to rise up between pores due to capillary action (D) All the above
Last Answer : Answer: Option D
Description : Cement concrete is __________________to moisture (a) Permeable (b) Impermeable (c) Rapid Harden (d) None of these
Last Answer : (b) Impermeable
Description : A permeable substance is one (a) which is a good conductor (6) which is a bad conductor (c) which is a strong magnet (d) through which the magnetic lines of force can pass very easily
Last Answer : (d) through which the magnetic lines of force can pass very easily
Description : Bacteria become erythromycin resistant by the following mechanisms except: A. Becoming less permeable to erythromycin B. Elaborating an erythromycin esterase enzyme C. Elaborating a protection ... the erythromycin binding site D. Altering the ribosomal binding site through a methylase enzyme
Last Answer : C. Elaborating a ‘protection protein’ which blocks the erythromycin binding site
Description : Methicillin resistant staphylococci do not respond to β-lactam antibiotics because: A. They produce a β-lactamase which destroys methicillin and related drugs B. They elaborate an amidase which destroys ... low affinity for β-lactam antibiotics D. They are less permeable to β-lactam antibiotics
Last Answer : C. They have acquired penicillin binding protein which has low affinity for β-lactam antibioti
Description : Which of the following statements is correct ? (1) The descending limb of loop of Henle is impermeable to water. (2) The ascending limb of loop of Henle is permeable to water. (3) The ... of Henle is permeable to electrolytes. (4) The ascending limb of loop of Henle is impermeable to water.
Last Answer : (4) The ascending limb of loop of Henle is impermeable to water.
Description : 11. Which of the following theories explain that plasma membrane is selectively permeable: (a) Unit membrane theory (b) Cascade theory © Sandwich theory (d) Fluid Mosaic theory
Last Answer : Answer: d Fluid Mosaic theory