Digestion <span>breaks carbohydrates down into basic subunits ("building blocks") called saccharides, or sugars. </span>
Hello. this is very simple. i know it and im in middle school. dont highschoolers know that you can just ask google and get a verified answer in just a few seconds?
sighs, well i guess older kids dont get technology as much as we do.
no offense, but seriously if you pay more attention in class you might not be asking this silly question right now.
Molecule which enzyme<span> acts on = the substrate. 5. Substrate molecule is held within the active site by bonds that temporarily form between certain amino acids of the active site and groups on the substrate molecule. ... This folds in a particular way = each </span>enzyme<span> has a </span>specific<span> tertiary </span>structure<span>.</span>
Answer:
I believe that the protists were the first organisms on earth. And the other 5 kingdoms then came from the protists.
I think that's it! :)
DNA is composed of nucleotides, which are composed of three parts:
1. A five carbon carbohydrate (pentose)
Pentose is classified as a monosaccharide (simple carbohydrate), and its molecular formula is represented by 
. They are water soluble molecules with sweet taste. Monosaccharides may have from three carbon atoms (trioses) to six (hexoses). In DNA is present pentose (5 carbon atoms)
2. A nitrogenous base
Nitrogenous bases are ring-shaped compounds that contain nitrogen in their molecular structure. They are classified into two groups: purines and pyrimidines
The purine bases are adenine (A) and guanine (G). They are larger and contain more than one ring in their structure,.
The pyrimidines, cytosine (C), uracil (U) and thymine (T), are smaller and composed of a single ring.
3. One or more phosphate groups
A phosphate consists of a trivalent anion that contains one phosphorus atom and four oxygen atoms. Its molecular formula is expressed by 
.
