Gujranwala Board 2007 Bio Part 2

1) muscle fatigue is caused by a) CO2 b) accumulation of lactic acid c) fumaric acid d) ethyl alcohol 2) the neuron net of hydra lacks a) neurons b) direction of impulse flow c) connections d) dendrites 3) every gene starts with codon AUG which normally encodes the amino acid a) arginine b) cutruline c) methionine d) lysine 4) in klinefilter syndrome a) one x chromosome missing b) additional sex chromosome c) sex chromosome fail to segregate d) none 5) drosophila males are a) homozygous b) heterozygous c) semizygous d) hemizygous 6) one common type of vector is a a) chromosome b) lysosome c) plasmid d) mitochondria 7) The living plants which can store water , during drought, in their fleshy stems are : a) cacti b) euphorbia c) both a and b d) none of these