Which of the following body systems detects a stimulus and creates a response? 1. response system 2. skeletal system 3. nervous system 4. muscular system

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity hurry!

The cluster of developing cells from conception until birth is called an

The structure of a dna molecule is best described as a. one long strand of nucleic acids b. two strands of dna nucleotides joined by hydrogen bonds c. two strands of amino acids joined by hydrogen bonds d. one long strand of amino acids