Answer:
Explanation:
An element only has <u>one</u> type of atom and cannot be broken down by chemical means.
Let's analyze the answer choices.
1. This has two types of atoms, so it cannot be an element. It has more than one type of atom.
2. This has two types of atoms that are bonded together. It cannot be an element because there is more than one type of atom and the bonds can be broken.
3. This has one type of atoms, so it is an element.
Therefore the best answer choice is 3.
Answer:
C. Burying dead/religious beliefs
the first answer as blood needs to be oxygenated to be passes round the body then when its deoxgenated it will return to the heart to be pumped around the body again
Large polymers are created during dehydration synthesis, which are typically referred to as biological macromolecules. These compounds include proteins, lipids, carbohydrates, and nucleic acids.
As a result, the dehydration reaction is responsible for the formation of protein, lipid, and nucleic acids.
1. Protein structure
- Amino acid polymers form proteins. There are four different types of proteins, based on structure.
- The amino acid sequence of a protein is represented by its primary structure, which is a linear chain.
- The backbone (main chain) atoms of a polypeptide are arranged locally in space to form the protein's secondary structure.
- A polypeptide chain's whole three-dimensional structure is referred to as a protein's tertiary structure.
- The protein's quaternary structure, which is a three-dimensional arrangement of the subunits of a multi-subunit protein.
2. Lipid structure is a crucial element of the cell membrane. The structure is mostly composed of a glycerol backbone, two hydrophobic fatty acid tails, and a hydrophilic phosphate group.
3. Nucleic acids' structure: Nucleotide polymers make up nucleic acids. Each nucleotide is made up of an aromatic base with a N-atom connected to a pentose sugar with five carbons, which is then joined to a phosphate group.
To know more about biological macromolecules visit:
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Seasonal variations of climate impact the state of an ecosystem. In areas that experience a cold season, some elements of the ecosystem change their residence or even hibernate to survive. Succession can be considered a higher state of development of the ecosystem.
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