Can someone explain how it is possible for a single molecule of steroid hormone to create a significant and lasting response in an organisms cell?

Could someone me with number one you

Which of the following is not a defining characteristic of plants?

Which of the following statements is true? a. there are more chromosomes in an organism than there are genes. b. there are more genes in an organism that there are chemical bases. c. dna is made of sugar, phosphate, and carbon. d. genes are found in specific locations on a chromosome.