What happens during the g1 phase of the cell cycle? the cell copies its entire dna. the cell grows to its mature size. the cell reproduces its organelles. the cell divides into daughter cells.

The cell reproduces its organelles.

Explanation:

G1 phase, S phase and G2 phase are collectively termed as interphase.  Interphase is the phase in which cell enters just after it has been born by its mother cell. Its newborn and lacks essential things which are required for its proper functioning and maintenance. This all happens in interphase that prepares this newborn cell to perform advanced functions.

G1 phase is the first step of interphase which is also called as first gap phase,in which cell copies its  organelles, grows physically big in size and formulates the molecular building blocks that it needs in later steps of the life cycle.

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the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

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