1 Which statements about DNA are true? Choose more than one
answer.
DNA stands for ribonucleic acid
DNA is arranged in a spiral-shaped double helix
Genes are inherited from both parents
Scientists have yet to map the human genome
There are at least 20,000 human genes
Research on DNA can lead to new treatments for diseases
C D

c is the answer : )               your welcome

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

the answer is c. it will give up it's valence electron to the other atom.