Question

c) allotype 7. The genetic composition (makeup) of an organism is called the: a) phenotype b) genotype 8. Which of the following is a polar covalent bond: a) C-H b) O-H c) O-O d) none of d) idiotype c) allotype d) idiotype these 9. Which of the following is a nonpolar covalent bond: a) N-C b) O-H c) C-H d) none 10. Natural selection requires : a) a stable hereditary mechanism b) a mechanism(s) to insure random variation of heritable traits within every generation c) variant heritable traits that contribute to success of the organism d) all (a,b &c) are correct e) none 11.A mutated form of a heritable trait whose frequency in a population will decrease to zero because of natural selection would be characterized as: a) beneficial b) conditional c) lethal d) silent e) moral 12. When an enzyme is heated and subsequently loses its enzymatic activity, this is an example of : a) catalytic conversion b) endothermic hydrolysis c) thermal denaturation d) a-heix fixation e) none of these 13 The observation that all life today employs ATP as the only usable form of energy is strong evidence for: a) intelligent design of life b) common ancestry for all life c) Lamarckianevolution d) biochemical diversity 14. Which is not a postulate of cell theory: a) all life is made of cells b) all cells come from pre-existing cells c) all cells are microscopic d) all are in cell theory e) none 15. Which is a postulate of Darwinian Evolution, a) species characteristics are unfixed and mutable b) all life is related by common ancestry c) natural selection drives

Answer 1

7. Option B is correct
The genetic composition of an organism = Genotype

8. Option B is correct
Polar covalent is formed between two atoms that differ significantly in their electronegativities.

9. Option C is correct
C-H is a non-polar covalent bond.

10. Option D is correct
All the given options are true about natural selection.

11. Option C is correct
A lethal mutation would not be maintained and eventually eliminated from the population

12. Option C is correct
An enzyme loses its activity due to high temperature (Thermal denaturation)

13. Option B is correct
The common ancestry of life = All organisms share common metabolic pathways and metabolites.

14. Option C is correct
All cells are microscopic is not a postulate of cell theory.