Answer:
c. 20 amino acids
Explanation:
There are 20 different amino acids that makeup proteins. The four-letter "alphabet" is referring to how DNA and RNA utilize ATCG and AUCG respectfully. DNA and RNA encode for amino acids that become proteins. Hope this helps :)
Similar DNA may support "common" ancestry. ☺
Answer:
Molecules diffuse across the plasma membrane. A concentration gradient exists for these molecules, so they have the potential to diffuse into or out of the cell by moving down it.
Answer:
The correct answer would be carbohydrate.
In biology, organic compounds are the chemical compounds which are generally made up of carbon, hydrogen and oxygen or nitrogen. There are four major groups of organic compounds namely carbohydrates, proteins, lipids, and nucleic acids.
Saccharide is a term alternatively used for sugar or carbohydrate. Carbohydrate is a biomolecule made up of carbon (C), hydrogen (H), and oxygen (O). It usually has a empirical formula C<em>m</em>(H₂O)<em>n </em>(<em>m</em> and <em>n </em>can be same or different).
The sachharides are of four types depending upon the number of monomer units involved in the formation of that sugar:
- Monosachharide: smallest or single unit such as glucose, fructose (fruit sugar) etc,
- Disachharide: made up of two units joined by glycosidic bond such as lactose (milk sugar), sucrose (cane sugar) etc.
- Oligosachharide: made up of 3-10 monomers of sugar.
- Polysachharide: made up of more than 10 monomers such as starch, glycogen etc.