There are four major classes of biological macromolecules:
carbohydrates.
lipids.
proteins.
nucleic acids.
True
Explanation:
Aqueducts are constructed channels for transporting water from one point to another.
- They were first constructed by the Roman to move water from hollow valleys and narrow areas.
- Today, aqueducts include canals, ditches, gutters, channels that are used to carry water.
- Aqueducts aids the movement of water from one place to another.
- Development of aqueducts by the Romans was seen as a great advantage in that civilization.
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the answer is A. I took the test and got it right. The question is specifically asking about the THIN filaments, making it actin- and only actin.
It would be #2 because it dosent have those specific antigens to defend the pathogen.