Description : Name the outer portion of a stem or root, bounded externally by the epidermis, and internally by the cells of the pericycle.
Last Answer : ANSWER: Cortex
Description : Which of the following is not true for prokaryotic organism? A.Nucleus is not bounded by nuclear membrane B.Chromosomes does not contain histones C.80S ribosomes are distributed in cytoplasm D.Cell wall contains peptidoglycan as one of the major component
Last Answer : C.80S ribosomes are distributed in cytoplasm
Description : Which of the following is not true for prokaryotic organism? A- Nucleus is not bounded by nuclear membrane B- Chromosomes does not contain histones C- 80S ribosomes are distributed in cytoplasm D- Cell wall contains peptidoglycan as one of the major component
Last Answer : 80S ribosomes are distributed in cytoplasm
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 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 : 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 : Which of the following statement(s) is/are true concerning the cell plasma membrane? a. The plasma membrane is composed of amphipathic molecules b. The hydrophobic core of the lipid bilayer of the ... contribute to the cell coat d. The membrane proteins of nerve cells are highly voltage-dependent
Last Answer : Answer: a, b, d The plasma membrane defines the boundary of the cell and serves to contain and concentrate enzymes and other macromolecule constituents. The plasma membrane is ... and bear carbohydrate moieties primarily as oligosaccharide chains that contribute to the cell coat or glycocalyx
Description : Are larger cells with membrane-bounded organelles?
Last Answer : booty hole
Description : Which of the following is not true for eukaryotic cells? A- Nucleus is bounded by nuclear membrane B- Chromosomes contain histones C- Chloroplasts and mitochondria contains 70S ribosomes D- Gas vacuoles are present
Last Answer : Gas vacuoles are present
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 : 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 screen ?
Last Answer : The membrane through which only solvent molecules of solution (water in case of plants) can move but solvent molecules cannot move is called semipermeable screen. For example, cell membrane , inner membrane of egg shell , membrane of fish shell etc.
Description : Which cell organelle is semi-permeable?
Last Answer : Plasma membrane
Description : Cells are commonly studied in the lab. If you were examining various unlabelled slides of cells under the microscope, you could tell if the cell was from a plant by the presence of (A) A nucleus (B) A cell membrane (C) Cytoplasm (D) A cell wall
Last Answer : (D) A cell wall
Description : Select the wrong statement from the following. (a) Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane. (b) Both chloroplasts and ... mitochondria. (d) Both chloroplasts and mitochondria contain an inner and an outer membrane.
Last Answer : (a) Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane.
Description : what is a selectively permeable membrane -Biology
Description : What is the selectively permeable membrane of the cell? -Do You Know?
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 the process in which water moves from an area of high concentration to an area of low concentration across a selectivity permeable membrane?
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 : 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 : 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 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 : What is the selectively permeable membrane of the cell?
Last Answer : Plasma lemma
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
Description : In a cell, the membrane bounding the outer surface of the cytoplasm is known as: a) tonoplast b) cytoplast c) plasmalemma
Last Answer : ANSWER: C -- PLASMALEMMA
Description : Cytoplasm vs plasma membrane? -Biology
Description : What is the advantage of having folded membrane surrounding the cytoplasm?
Description : Antigens are present (a) inside the cytoplasm (b) on nuclear membrane (c) inside the nucleus (d) on cell surface.
Last Answer : (d) on cell surface.
Description : Identify the components labelled A, B, C and D in the diagram below from the list (i) to (viii) given along with Components : (i) Cristae of mitochondria (ii) Inner membrane of mitochondria (iii) Cytoplasm (iv) Smooth endoplasmic ... viii) (vi) (c) (vi) (v) (iv) (vii) (d) (v) (i) (iii) (ii)
Last Answer : (a) (v) (iv) (viii) (iii)
Description : The main area of various types of activities of a cell is (a) plasma membrane (b) mitochondrion (c) cytoplasm (d) nucleus.
Last Answer : (c) cytoplasm
Description : Which of the following statements about inclusion bodies is incorrect? (a) They are not bound by any membrane. (b) These are involved in ingestion of food particles. (c) They lie free in the cytoplasm. (d) These represent reserve material in cytoplasm.
Last Answer : (b) These are involved in ingestion of food particles
Description : The protists have (a) only free nucleic acid aggregates (b) membrane bound nucleoproteins lying embedded in the cytoplasm (c) gene containing nucleoproteins condensed together in loose mass (d) nucleoprotein in direct contact with the rest of the cell substance.
Last Answer : (b) membrane bound nucleoproteins lying embedded in the cytoplasm
Description : The main difference in Gram (+)ve and Gram (–)ve bacteria resides in their (a) cell wall (b) cell membrane (c) cytoplasm (d) flagella.
Last Answer : (a) cell wall
Description : Difference in Gram positive and Gram negative bacteria is due to (a) cell wall (b) cell membrane (c) ribosome (d) cytoplasm.
Description : The phospholipids present in cytoplasm membrane of the archaeo- bacteria is A- phosphoglycerides B- polyisoprenoid C- polyisoprenoid branched chain lipids D- none of the bove
Last Answer : polyisoprenoid branched chain lipids
Description : All of the following are found in prokaryotes and eukaryotes, except a. acell (plasma) membrane b. mitochondria c. cytoplasm d. ribosome
Last Answer : b. mitochondria
Description : Which does NOT occur in a cell stimulated by a steroid hormone? A) The steroid hormone enters the cell by crossing the plasma membrane. B) The hormone binds to a receptor molecule in the ... activates certain genes. E) DNA is transcribed, mRNA is translated, and the result is protein synthesis.
Last Answer : C) The second messenger cyclic AMP is stimulated by the hormone-receptor complex. D) The hormone-receptor complex binds the chromatin and activates certain genes.
Description : The glucocorticoid receptor is located: A. On the outer surface of the cell membrane B. On the inner surface of the cell membrane C. In the cytoplasm D. Inside the nucleus
Last Answer : C. In the cytoplasm