How does rna differ from dna? a. rna contains uracil; dna contains thymine b. rna is a polymer of amino acids; dna is a polymer of nucleotides c. rna contains one less -oh than does dna d. rna is double-stranded; dna is single-stranded e. in rna g pairs with t; in dna g pairs with c?

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.

What's the waste product of electrons and pyruvate combining in fermentation?  

2. which is the last step in the scientific method?