Beginning within the nucleus, the first step leading to the synthesis of a polypeptide is beginning within the nucleus, the first step leading to the synthesis of a polypeptide is transferring of information from dna to messenger rna translation of an rna nucleotide sequence into a sequence of amino acids translation of a dna nucleotide sequence into a sequence of amino acids removal of introns from rna and the stitching together on exons linking of nucleotides to form a polypeptide

Hey there!

The purpose of guard cells is to control the opening and closing of the Stomata, keeping it the correct width, or size.

Therefore, your correct answer would be Option 3, control the size of the Stomata.

Hope this helps!

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humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of invasive species (such as new predators and food competitors), overhunting, and other influences. explosive, unsustainable human population growth is an essential cause of the extinction crisis.

explanation:

i didn't have the answer choices , but i tried my best.