What three components make up a nucleotide? A. a deoxyribose, a phosphate, and an enzyme
B. a phosphate, an enzyme, and a nitrogenous base
C. an enzyme, a deoxyribose, and a nitrogenous base
D. a phosphate, a deoxyribose, and a nitrogenous base

(drag each tile to the correct identify which questions can be answered by what can be answered by science or which cannot. -is it right or wrong to use genetic engineering to produce new food products? -what are the most common social settings that tend to produce accomplished artists? -if a new gene is added to the genome of a tomato species, will that species be more resistant to insects? -should humans use biotechnology to bring extinct organisms from the fossil record back to life? -do the types of organisms found in the fossil record appear in consistent sequences in different parts of the world? -are michelangelo's paintings more impressive than rembrandt's?

Explain why phospholipid molecules form a bilayer. (3 marks)

What is the 77 element on the periodtic table