Which of the following is true? O
A
Nucleotides are the building blocks of nucleic acids.
B
Fatty acids are the building blocks of amino acids.
о
c. Lipids are the building blocks of polysaccharides.
о
D
Lipids are the building blocks of proteins.

Restriction enzymes are used in making recombinant dna. describe the role restriction enzymes perform when constructing recombinant dna.

How have high taxes on tobacco products impacted the number of people who use them? a. the number of tobacco users has increased. b. the number of tobacco users has decreased. c. the number of tobacco users has not changed. d. the number of adolescent tobacco users decreased, while the number of adult users increased

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of