Ejaz H. Abbasi

Ejaz H. Abbasi

Solved Exercise, Bio-12, Ch-24

EVOLUTION FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Archaebacteria can tolerate high temperature up to _______. (120oC) (ii) The first eukaryote appeared about _______ years ago. (1.5 billion) (iii) _______ presented the theory of the origin of…

Solved Exercise, Bio-12, Ch-23

BIOTECHNOLOGY FILL IN THE BLANKS Q.01: Fill in the blanks. (i) The use of polymerase chain reaction (PCR) creates a _______ of copies in a laboratory test tube. (lesser number) (ii) _______ free living organisms in the environment that have…

Solved Exercise, Bio-12, Ch-22

VARIATION & GENETICS FILL IN THE BLANKS Q.01: Fill in the blanks: (i) ______ is the basic unit of biological information. (gene) (ii) A sudden change in the structure of a gene is called ______. (mutation) (iii) _______ is the…

Solved Exercise, Bio-12, Ch-21

CELL CYCLE FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Mongolism is also known as _______. (Down’s syndrome) (ii) During _______, homologous chromosomes get close to each other. (leptotene) (iii) _______ phase precedes G2 phase. (S) (i) Polar…

Solved Exercise, Bio-12, Ch-20

CHROMOSOME & DNA FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Particular tRNA molecules become attached to specific amino acids through the action of activating enzymes called _______. (aminoacyl-tRNA synthetase) (ii) _______ is the transfer of genetic material…

Solved Exercise, Bio-12, Ch-19

GROWTH & DEVELOPMENT FILL IN THE BLANKS Q.01: Fill in the blanks: (i) The influence of notochordal cells on the ectodermal cells to become nervous system was called _______. (embryonic induction) (ii) _______ is a condition in which individuals have…

Solved Exercise, Bio-12, Ch-18

REPRODUCTION FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Asexual reproduction requires only a single ______ organism. (parent) (ii) Sexual reproduction usually involves ______ parents. (two) (iii) Phytochromes are the special ______ sensitive pigments. (light) (iv) External fertilization…

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,…