INTRODUCTION TO BIOLOGY Flashcards
research (6 cards)
the number of naturally occurring chemical elements in biochemical reactions is _______
92
in case of cloning the donor nucleus is taken from the _______
somatic cell
gymnosperms appeared in _________
Paleozoic era
communities are dynamic due to fluctuations in ________________
abiotic factors
branch connected with study of cell structure is called__________
cytology
a fossil is a _____________
organic relic of the past