Which of the following was most likely the first living organism on earth

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

Explain how the parts of the peripheral nervous system work with the central nervous system to produce a response to the stimulus

Kara has a plant that produces either purple or white flowers. she crosses a plant that has two recessive alleles for white flowers with a plant that has two dominant alleles for purple flowers. which result would be true of all of the offspring? a) all of the offspring would have two recessive alleles and white flowers. b) all of the offspring would have two dominant alleles and purple flowers. c) all of the offspring would have one recessive allele, one dominant allele, and white flowers. d) all of the offspring would have one recessive allele, one dominant allele, and purple flowers