Some organisms use uncommon amino acids in synthesizing specialized proteins. Homoserine and homocysteine (pictured) are used in metabolism as intermediates in the production of common amino acids. Some scientists believe that homoserine and homocysteine could be used in proteins. Which of these could function as an amino acid in proteins? A) Neither homoserine nor homocysteine could be used in proteins because they both have an extra carbon unit in the side chain.
B) Only homoserine can be used in protein production because homocysteine contains a sulfur atom, which cannot be a part of proteins.
C) Only homocysteine can be used in protein production because homoserine contains an extra hydroxyl group, which will denature the protein.
D) Both homoserine and homocysteine could be used in protein production because they contain both the amine group and carboxylic acid required for peptide bonds.

1. dermis

2. chemical

3. urine

4. viruses

5. antibodies

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation:

events in order:

1.       vishnu schist

2. zoroaster granite

3. bass limestone

4. hakatar   shale

5. igneous intrusion

6. shinumo quartzite

7. dox sandstone

8. tapeats limestone

9. bright angel shale

10. muav limestone

11. temple butte limestone

12. redwall limestone  

nonconformity

answer: the unkar group shows angular unconformity because the layers are turned at angle.

unconformity

answer: specifically the angular unconformity occurs between the cambrian and precambrian rocks. the dox sandstone, shinumo quartzite, hakatar shale, and bass limestone have been filled. an angular unconformity occurs between the cambrian and precambrian rocks. the dox sandstone, shinumo quartzite, hakatar shale, and bass limestone have been filled.

disconformity

answer: the disconformities aremarked irregular lines between the sedimentaryrocks layers.

sorry, is there a picture? i do not see any arrows.

wut? unius0123 wut?