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13 Cards in this Set

  • Front
  • Back
Proteins are composed of molecules known as ____ _____ linked with ______ _____.
amino acids
peptide bonds
Proteins are equal to ___ calories per gram.
What 4 elements are amino acids made up of?
Carbon, hydrogen, Oxygen, Nitrogen
Which 2 amino acids have sulfur present in them?
Methionine and Cysteine.
What are the 8 essential amino acids?
# Lysine
# Threonine
# Methionine
# Valine
# Phenylalenine
# Leucine
# Isoleucine
# Tryptohpan
Enzymes are _______. They are organic catalysts.
Coenzyme + Apoenzyme =
non-protein protein part
Extracellular enzymes (exoenzymes) function:
outside the cell;
Intracellular enzymes (endoenzymes) function:
inside the cell.
Constitutive enzymes are always..
present in the cell.
Inducible enzymes are present only when...
when a suitable substrate is present
Examples of Enzymes:
1. Hydrolase - Hydrolytic or digestive
2. Oxidase - Oxidizes its substrate (adds oxygen or removes hydrogen)
3. Reductase - Reduces its substrate (adds hydrogen)
4. Dehydrogenase - Removes hydrogen
5. Decarboxylase - Removes carbon dioxide
6. Carboxylase - Adds carbon dioxide
More examples of enzymes:
7. Transferase - Transfers small groups from one molecule to another
8. Permease - Transports molecules across membranes
9. Sucrase (invertase) - Digests sucrose
10. Lipase - Hydrolyzes lipids
11. Protease - Hydrolyzes proteins
12. Nuclease - Hydrolyzes nucleic acids