Specialized cells perform specialized functions in multicellular organisms.
A. They trap some of the Sun’s heat energy within the atmosphere, helping to maintain Earth’s average temperature.
Answer:
Double Helix
The structure of DNA is called a double helix.
The correct answer is; "Assembling molecules in either hydroxyl or carboxyl functional groups"
Polymers are formed from monomers either by condensation or by addition of monomers.
A polymer is formed by the joining of one or more monomers. This can happen in either of the following ways;
Condensation polymerization involves the loss of a small molecule. When the molecule that is lost is water, we can call it dehydration. Loss of molecules does not occur in addition polymerization.
The two monomer molecules that join to yield the polymer by dehydration must have H and OH moieties in suitable positions for dehydration to occur. A typical example is assembling molecules in either hydroxyl or carboxyl functional groups.
For more about condensation polymerization, see
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Answer: animals with backbones include mammals, birds, reptiles, amphibians, and fish. Vertebrates make up just 3 per cent of all known animal species.
Explanation: