<span>A kind of sedimentary rock formed from plant material over a long period of time is : Coal
In order for coal to be created, it needed a lot of decomposition from dead organisms, such as dead plants and animals.
our nature need million of years before it could naturally transform the dead substances into a flammable substance such as coal and oil</span>
Answer:
Enzymes made in the salivary glands, the stomach, the pancreas and the small intestine are amylase,lipase, chymotrypsin, pepsin, trypsin, enteropeptidase, lactase and maltase.
Explanation:
- Amylase: Breaks down carbohydrates
- Lipase: Breaks down lipids
- Chymotrypsin: Breaks down proteins
- Trypsin: Breaks down proteins
- Enteropeptidase: Breaks down proteins
- Lactase Breaks down lactic acid
- Maltase: Breaks down maltose
- Sucrase: Breaks down sucrose
The concept presented to explain the origin of eukaryotic cells form a bacterial cell parasitized by another descendant cell is called endosymbiosis.
<h3>What is the endosymbiotic theory?</h3>
The endosymbiotic theory is a well-sustained theory in biology about the origin of eukaryotic cells.
According to this theory, eukaryotic cells emerged by endosymbiosis between primitive eukaryotic cells and bacteria that converted into mitochondria and chloroplast organelles.
The endosymbiotic theory is well sustained in several scientific observations such as the existence of DNA in mitochondria and chloroplasts that is independent of nuclear DNA, the size of ribosomal units, etc.
In conclusion, the concept presented to explain the origin of eukaryotic cells form a bacterial cell parasitized by another descendant cell is called endosymbiosis.
Learn more about endosymbiosis here:
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Answer:
O They are made of just one cell
Explanation:
Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells.