Tag Biology 12

Solved Exercise, Bio-12, Ch-17

COORDINATION AND CONTROL FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Neurotransmitter molecules bind to the receptors on the _______ membrane at synapse. (post-synaptic) (ii) Excess of _______ hormone is secreted in Addison’s disease. (Melanophore stimulating hormone) (iii)…

Solved Exercise, Bio-12, Ch-16

SUPPORT AND MOVEMENTS FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Each muscle is enclosed by a membrane known as ______. (sarcolemma) (ii) Osteoporosis in caused by the decrease in the level of ______. (estrogen) (iii) The “molting”…

Solved Exercise, Bio-12, Ch-15

HOMEOSTASIS FILL IN THE BLANKS Q.01: Fill in the blanks: (i) ________ is the ability of an organism to regulate its fluid contents. (osmoregulation) (ii) The detoxification of ammonia to _________ requires the precursor of ornithine. (urea) (iii) In kidney,…

Question Bank | BIO-12

This is chapter-wise collection of important MCQs, short questions and long questions, selected from previous eigth (8) years board papers of all Punjab & AJK boards. NOTE: Consult these question banks, and give yur feedback to improve our effort. Thanks!

Assessment Tests, Bio-12, Ch-27

Chapter-27: Man and Environment The important topics of this chapter concerning the tests are: Introduction & nomenclature of carboxylic acids, preparation of carboxylic acids & their physical properties, chemical reactions of carboxylic acids such as esterification, amide formation, partial and…

Assessment Tests, Bio-12, Ch-26

Chapter-26: Some Major Ecosystem The tests correspond to the following topics of chapter-12: Introduction and nomenclature of aldehydes and ketones, preparation of aldehydes & ketones, nucleophilic addition reactions of carbonyl compounds such as addition of hydrogen cyanide, addition of sodium…

Assessment Tests, Bio-12, Ch-25

Chapter-25: Ecosystem Following topics of the chapter are relevant to the tests below: Introduction, classification and nomenclature of alcohols, phenols & ethers, industrial preparation of methanol, preparation of ethanol by fermentation, reactions of alcohol, identification tests for primary, secondary &…