Description : Hydrogen diffuses . . . . . . . . . . chlorine (a) Faster than (b) Slower than (c) At the same rate as (d) None of these
Last Answer : Ans:(a)
Description : All the following statements regarding calcium are correct except (A) It diffuses as a divalent cation (B) It freely diffuses across the endoplasmic reticulum of muscle cells (C) It can exist in the blood as ionic form and also protein bound (D) It is found in high concentration in bones
Last Answer : Answer : B
Description : Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant duri
Last Answer : Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal ... durign day time, and the other at night.
Description : Which of the following product of PIP`""_(2)` diffuses into the cytoplasm triggering the release of `Ca^(2+)` for intracellular calcium-mediated proce
Last Answer : Which of the following product of PIP`""_(2)` diffuses into the cytoplasm triggering the release of `Ca^(2 ... `IP_3` B. DG C. cAMP D. Protein kinase
Description : What molecule diffuses into the chloroplast that is needed for the Calvin cycle?
Last Answer : What is the answer ?
Description : Oxygen diffuses through this structure, but a sodium ion may need active transport. Which structure is this statement most likely referring to?
Last Answer : A semipermeable membrane (APEX)
Description : Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above ... Both processes can happen together because the diffusion coefficient of water and CO2 is different
Last Answer : (d) Both processes can happen together because the diffusion coefficient of water and CO2 is different
Description : Which one of the following is one of the paths followed by air or O2 during respiration in the adult male Periplaneta americana as it enters the animal body? (a) Spiracle in ... prothorax, tracheoles, trachea, oxygen diffuses into cells (d) Hypopharynx, mouth, pharynx, trachea, tissues
Last Answer : (a) Spiracle in metathorax, trachea, tracheoles, oxygen diffuses into cells
Description : Enrichment of uranium by gaseous diffusion relies on the fact that uranium-235 diffuses through holes in the barriers more readily than uranium-238 does because uranium-235 is: w) a different chemical ... x) a different wavelength. y) resistant to magnetism. z) slightly lighter than uranium-238.
Last Answer : ANSWER: Z -- SLIGHTLY LIGHTER THAN URANIUM-238.
Description : During osmosis w) Pure solvent diffuses through a membrane but solutes do not. x) Pure solutes diffuse through a membrane but solvent does not. y) Pure solvent and a solution both diffuse at the same time through a membrane. z) Gases diffuse through a membrane into a solution and build up pressure.
Last Answer : ANSWER: W -- PURE SOLVENT DIFFUSES THROUGH A MEMBRANE BUT SOLUTES DO NOT.
Description : Most of the carbon dioxide picked up by the blood in the tissues: a) dissolves in the plasma b) unites with hemoglobin c) forms microscopic bubbles d) diffuses into the alveoli
Last Answer : ANSWER: A -- DISSOLVES IN THE PLASMA
Description : On a dry day, water diffuses out of the intercellula spaces of the leaf through what part of the leaf?
Last Answer : ANSWER: STOMATA
Description : If I want the outside of a cake to cook faster because I am using a smaller pan, should I raise the cooking temperature or maybe put the pan on a lower rack?
Last Answer : I would think lower the temperature a little and go a little longer with the cooking. I would have to figure that out by trial and error though. Slower cooking so it goes all the way through seem logical.
Description : Why the reaction between magnesium and acid goes faster when the temperature is raised?
Last Answer : The atoms have greater kinetic energy and move faster when the temperature is raised, resulting in more frequent contact between the magnesium atoms and acid molecules, which will cause the rate of the reaction to increase.
Description : Why mold grows faster in higher temperature?
Description : Pressure Cooker cooks faster because (1) boiling point decreases with rise of pressure (2) it cooks the food at low pressure (3) higher temperature is attained for cooking (4) the material of the cooker is a good conductor
Last Answer : (3) higher temperature is attained for cooking Explanation: In pressure cooker boiling point of water increases due to high pressure.
Description : Pick out the wrong statement. (A) The binary diffusivity in liquids is of the order of 10 -5 cm2 /sec (B) Molecular diffusion in solid is much faster than that in liquids ( ... Poiseuille's law, the permeability decreases with increase in temperature for flow of a gas through a given capillary
Last Answer : (B) Molecular diffusion in solid is much faster than that in liquids
Description : Ceramic compounds as compared to metallic compounds (A) Crystallise faster (B) Resist greater tensile stress at room temperature (C) Have higher melting temperature (D) Are better conductor of electricity at higher temperature
Last Answer : Option C
Description : Foods cooked in salt water compared to unsalted water will: w) cook faster x) boil at a lower temperature y) not be affected in any way z) will cook slower because of the action of the salt
Last Answer : ANSWER: W -- COOK FASTER
Last Answer : higher temperature is attained for cooking