Below is a list of steps that must occur for DNA to be replicated. 1. Hydrogen bonds are broken between nitrogen bases
II. Two double helixes form
III. DNA Unwinds
IV. Free nucleotides are added to template strands
Which of the following correctly identifies the order of the steps?
I, II, III, IV
II, I, III, IV
O 1H, I, IV, 11
1. IV. II, 11

Six amino acids have side chains that are polar but not charged. these are serine (ser), threonine (thr), cysteine (cys), asparagine (asn), glutamine (gln), and tyrosine (tyr). these amino acids are usually found at the surface of proteins, as discussed in the proteins 2 module.

Glucose, also called grape sugar, blood sugar or corn sugar, is among the simplest and one of the primary naturally occurring sugars. produced naturally by plants as the primary photosynthesis product, it is heavily used by living beings as a main energy source and is necessary for cellular respiration. chemically, it is a monosaccharide carbohydrate and serves as a building block for complex sugars like starch.