Biology is defined as the study of life.

Which of the following statements describes an organism’s interactions with the physical environment? 

Which one of the following statements about the equation for the speed of sound,

Which macromolecule is composed of nucleotides?

What is the difference between a monosaccharide and a disaccharide?

What is the primary structure of proteins?

Which macromolecule is composed of glycerol and three fatty acids?

Which macromolecule is composed of amino acids?

Which type of fat is commonly found in animal products, such as meat and dairy?

Maria is a typical healthy 1-year-old who weighs 24 pounds. Which is the best estimate of her birth weight?