491. Different species of plants and animals living in the same habitat are called __?
A. Population
(B. Community)
C. Biome
D. Habitat
492. In animals, coordination is achieved by means of_________?
A. Respiratory system
B. Nervous system
C. Endocrine system
(D. Both B and C)
493. _ is the potential source of chemical energy for cellular activities?
(A. C-H bond)
B. C-O bond
C. C-N bond
D. P-O-C bond
494. The branch of biology that deals with the study of social behavior and communal life of human beings living in any environment is called________?
A. Environmental biology
(B. Social biology)
C. Human biology
D. Both B and C
495. The concept that various organisms dominated this planet during various geological time periods and thus placing organisms in a time sequence came from the studies by________?
A. Environmental biologist
(B. Paleontologist)
C. Marine biologist
D. Social biologist
496. PCR stands for _?
(A. Polymerase chain reaction)
B. Poly carbomyl reaction
C. Peptide chain reaction
D. Pentapeptide chain reaction
497. The innate tendency of offspring to resemble their parents is called________?
(A. Heredity)
B. Heridisk
C. Variation
D. None
498. Ribosomes were discovered by_______?
A. Golgi
B. De Duve
(C. Palade)
D. R. Brown
499. Which character differentiates living things from non-living organisms___________?
A. They live in the same ecosystem.
B. They are acted upon by the same environment
(C. They are highly organized and complex, made of one or more cells and contain genetic material)
D. Both A and B
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