OBJECTIVES
abidaMultiple Choice Questions MCQs Four options are given at the end of each statement. You should encircle one option from them. The number of electrons present in nature are: (a)…
MODEL SUBJECTIVE QUESTION
What are elements? Give major and trace element. What is atom? Give its structure. Write note on isotopes. What are energy levels or shell? How many shells are present in…
DEFINITIONS AND KEY POINTS
TERMS DEFINITIONS Matter Anything that occupies space and has mass is called Mass The amount of matter in an object is called Mass Element The chemical substances that in ordinary …
IPIDS ENERGY, INTERFACES, AND SIGNALS
L•ds are nonpolar organic molecules that are insolubfr- in polar water but s luble in nonpolar organic solvents like ether, alcoh( , and chloroform. P ospholipids and cholesterol are lipids.…
CARBOHYDRATES
STORED ENERGY AND STRUCTURAL SUPPORT Polyhydroxy aldehyde or ketones are called carbohydrate. Carbohydrates are major source of energy for animals. Most animal cells have chemical machinery. It breaks down the…
HE MOLECULES OF ANIMALS
The molecules present in the animals are called organic molecules. The portant groups of organic molecules in animals include carbohydrates, lipids, oteins, nucleotides, and nucleic acids. There are two types…
ACID,BASES AND BUFFERS
Electrolytes A substance that conducts electricity in solution form is called electrolyte. Its example is sodium chloride (NaCI). Many fluids contain strong electrolytes hat break down (ionize) into ions. Most…
ENERGY LEVEL SHELLS
The electrons of an atom are distributed around its nucleus in orbital called energy-level shells or clouds of electrons. Location of these electrons greatly influences reactions. Seven energy level shells…
THE CHEMICAL BASIS OF ANIMAL LIFE
Atoms and Elements: Bui'Jing block of all matter, compounds molecules: Aggregate of atoms, Acids, Bases and Buffers, The molecules of Animals, Fractional account of Carbohydrates, Lipids, Proteins , Nucleotides, and…
DEFINITIONS AND KEY POINTS
Write note on genetic unity. Discuss cell as a unit of life. Discuss evolutionary oneness and diversity of life. Write note on different energy sources. Discuss chlids as an example…