Answer:
A. There are fossils of extinct ancestors of horseshoe crabs and the species is still alive today.
Explanation:
C and D have more to do with how it can be a fossil. It is a living fossil because its ancestors have been found in fossils, yet it continues to live today.
Mitosis in an eukaryotic cell cycle occurs after the G2 phase (option b). This is the final stage of interphase and during this time, the cell continues to grow as well as create new proteins
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1. Sand particles are too big to dissolve so their density sinks them
2. Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles.
In the context of protein digestion, protein breakdown into its amino acid constituents is completed by <u>proteases </u><u>produced in the small intestine</u>
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- Protein-degrading enzymes are referred to as proteases. These enzymes are produced by bacteria, fungus, plants, and mammals.
- Proteins in the body or on the skin are broken down by proteolytic enzymes.
- This may aid in digestion or the breakdown of proteins that contribute to inflammation and pain.
- The small intestine, pancreas, and stomach all manufacture protease.
- The stomach and small intestine are where the majority of chemical reactions take place.
- Pepsin is the primary digestive enzyme that targets proteins in the stomach.
- Proteases are released by the pancreas into the proximal small intestine, where they combine with proteins that have already been altered by gastric secretions and break them down into amino acids, which are then absorbed and utilized by the body as necessary.
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The observation that indicates that it is a living thing that is multicellular because it has membrane-bound organelles. The correct answer is option B. Multicellular organisms' cells are macroscopic which are naked to the visible eye. These organisms are eukaryotic so this means that their cells contain membrane-bound structures.