Answer:
Well protines come in diffrent shapes, for there diffrent functions. The first level, or primary structure, is the linear sequence of amino acids that creates the peptide chain. In the secondary structure, hydrogen bonding between different amino acids creates a three-dimensional geometry like an alpha helix or pleated sheet. An alpha helix is simply a spiral or coiled molecule, whereas a pleated sheet looks like a ribbon with regular peaks and valleys as part of the fabric. The tertiary structure describes the overall shape of the protein. Most tertiary structures are either globular or fibrous. Generally, nonstructural proteins such as enzymes are globular, which means they look spherical. The enzyme amylase is a good example of a globular protein. Structural proteins are typically long and thin, and hence the name, fibrous. Quaternary structures describe the protein's appearance when a protein is composed of two or more polypeptide chains. Often the polypeptide chains will hydrogen bond with each other in unique patterns to create the desired protein configuration.
some hormones are proteins; and some proteins are involved with digestion, respiration, reproduction, and even normal vision, just to mention a few.
f the three-dimensional structure of the protein is altered because of a change in the structure of the amino acids, the protein becomes denatured and does not perform its function as expected.
Explanation:
The answer is B because:
Cell walls are made of cellulose and proteins (hence II).
Animal cells don't have cell walls (only cell membrane) but plant cells do so IV
They must be semipermeable since materials for example carbon dioxide and water for photosynthesis have to go into the cell <em>some</em> way.
Answer: The bottom zone of the ocean
Explanation:
The bottom zone of ocean has the lowest biodiversity because of the temperature and high pressure.
There are only few organism that are found at such an variable condition.The fishes that are found there have no eyes and are flat in structure.
There is no light and aquatic animals use their receptors to sense their food and enemy.
The correct answer is bottom zone of ocean has the least variety of biodiversity.
Dead soft-bodied organisms are usually preserved as carbon films fossils over time, unlike higher organisms that have skeletons. These carbon outlines are formed when the organisms die and are buried in deep and deeper layers of sediment. The pressure and temperatures cause the volatile elements, that make up the organism, such as oxygen and nitrogen to escape leaving behind a more stable carbon skeleton.