What do disaccharides, such as sucrose, and
polysaccharides, such as starch, have in common?
a they are lipids made of fatty acids.
b they are proteins made of amino acids.
c they are nucleic acids made of nucleotides.
d they are carbohydrates made of simple sugars.

Which of the following statements are true chromosomes make up genes

In some plants, pointed leaves (p) are dominant over rounded leaves (p). a plant with a genotype of pp

Ihave no idea how to solve these. plus there's another question that is 2) a 10 kilogram meteorite is collected in space and brought back to earth. it is composed of 1.25 kg of uranium-238 and 8.75 kg of lead-206. how many u-238 half lives have passed? what is the approximate age of the meteorite?