The leaves of a plant are dotted with openings known as stomata. when open, stomata allow the plant to exchange gases and allow moisture to evaporate, to draw water from the roots up into the plant. these activities the plant to: . maintain homeostasisb. synthesize mineralsc. produce light energyd. decompose organic matter

Explanation:

Plants maintain homeostasis in two ways:

1. By keeping their stomata open to allow the diffusion of gases so that photosynthesis reaction takes place in the organisms.

2. By maintaining the water content in plants by evaporating the excess amount of water through leaf stomata. The loss of water is own of the cause of the transpirational pull in the plants.

Thus, plants maintain their homeostasis by these two mechanisms.

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.