Description : Urinary 17 ketosteroids (A) Are not found in women (B) Reflect the total production of androgenic substances (C) Indicate the total production of sex hormone (D) Are highly active androgens
Last Answer : Answer : B
Description : Second messengers a. are substances that interact with first messengers inside cells b. are substances that bind to first messengers in the cell membrane c. are hormones secreted by cells ... the intracellular responses to many different hormonesand neurotransmitters e. are not formed in the brain
Last Answer : mediate the intracellular responses to many different hormonesand neurotransmitters
Description : Name the gelatin-like substance which is prepared fro various species of red algae growing in Asiatic waters. The prepared product appears in the form of cakes, coarse granules, long ... or in combination with various nutritive substances, as a medium for culturing bacteria and various fungi
Last Answer : ANSWER: Agar-agar or just Agar
Description : Two substances, A and B were made to react to form a third substance, A2B according to the following reaction 2A + B → A2 B. Which of the following statements concerning this reaction are incorrect? -Chemistry 9th
Last Answer : (c) (i), (iii), (iv) Consider the example of H2O
Description : what All substances have characteristic properties. If one of these properties can be observed without changing the identity of the substance, it must be A. universal property. B. physical property. C. biological property. D. chemical property.?
Last Answer : B: Physical Property
Description : What is the ability a substance to change and form one or more new substances?
Last Answer : Need answer
Description : What is two or more substances that are together but do not combine to form a new pure substance?
Last Answer : What is the answer ?
Description : In animals that do not present the circulatory system the transport of substances occurs by cell to cell diffusion. The blood is a fundamental means of substance transport for larger animals ... there are tissues distant from each other and from the environment thus making diffusion impossible.
Last Answer : What are the two types of circulatory systems?
Description : (1) a homogeneous mixture of two or more substances Explanation: A homogeneous mixture of two or more substances uniformly dispersed throughout a single phase is called solution. In such a mixture, a ... the solvent including its phase, and the solvent is commonly the major fraction of the mixture.
Last Answer : Choose the incorrect statement pertaining to organic compounds - (1) They have low melting and boiling points (2) They do not dissolve in water (3) They are not easily combustible (4) They contain mainly carbon and hydrogen
Description : Hygroscopic substances are those substance which ready absorb
Last Answer : Water Vapors
Description : Two substances are in equilibrium in a reversible chemical reaction. If the concentration of each substance is doubled, then the value of the equilibrium constant will be (A) Same (B) Doubled (C) Halved (D) One fourth of its original value
Last Answer : (A) Same
Description : "The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction is proportional to the product of active masses of the reacting substances". This is the (A) Lewis- ... (B) Statement of Van't Hoff Equation (C) Le-Chatelier's principle (D) None of these
Last Answer : (D) None of these
Description : In the method of condensation polymerization, (A) Low-molecular substances are removed from the high molecular substance (B) The reaction proceeds with an evolution of ammonia (C) The reaction proceeds with an evolution of hydrogen chloride (D) All of the above
Last Answer : Answer: Option D
Description : .In functional allelopathy a). Toxic substances are released as such from the plants b). A precursor is released and is converted into active substances by some microorganisms c). No release of any toxic substance d). release of nitrogen from nodule of legume takes place
Last Answer : b). A precursor is released and is converted into active substances by some microorganisms
Description : Which one of the following best defines the word allotropes ? A Different structural forms of an element B A pair of substances that differ by H+ C Elements that possess properties intermediate between ... a specific number of neutrons E The different phases (solid, liquid or gas) of a substance
Last Answer : A Different structural forms of an element
Description : List four substances in water having deleterious effects. State their effects on concrete.
Last Answer : Substances in water: 1. Suspended particles 2. Inorganic salts 3. Acids and Alkalis 4. Algae 5. Sugar content 6. Mineral oil Effects of deleterious materials on concrete: ... reduces strength of concrete and vegetable oil shows detrimental effects on concrete strength at its later stages.