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NNADVOKAT [17]
3 years ago
6

There are various hypotheses as to the origin of prokaryotic and eukaryotic cells. Because all cells are similar in nature, it i

s thought that all cells came from a common ancestor cell called the last universal common ancestor or LUCA. The LUCAs evolved into three different cell types, each representing a domain in the modern system of classification. The three domains are the Archaea, the Bacteria, and the Eukarya. We know that all three domains are cellular in nature, but they have one other feature in common. And this second common feature helped provide the biochemical evidence to support this newest step in classification. Cite the evidence utilized in this classification scheme.
Biology
2 answers:
Paha777 [63]3 years ago
7 0

Answer:

D

Explanation:

Organisms can be classified into one of three domains based on differences in the sequences of nucleotides in the cell's ribosomal RNAs.

RSB [31]3 years ago
4 0

Answer: D

Explanation: took the usatestprep quiz

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The salivary glands, stomach, and pancreas secrete<u> lipase enzymes</u> to break down triglycerides into monoglycerides, fatty acids, and glycerol.

Lipases are a set of water-soluble enzymes that hydrolyze substrates such as triglycerides and phospholipids, have a similar structure and are essential in the metabolism of lipoproteins and lipids.

That is, the function of lipase enzymes is to hydrolyze triglycerides to generate diglycerides, monoglycerides, fatty acids and glycerol.

<u>About lipase enzymes</u>:

  • It acts on the neutral fats in the diet, splitting them into triglycerides or diglycerides and these to monoglyceride, which is the most easily absorbed fatty compound.

  • The action of lipase is much more manifest on triglyceride, and it is also much faster the higher the molecular weight of the fatty acid present.

  • It acts on the surface and in an aqueous medium, the emulsifying agent represented by bile salts is essential for optimum effectiveness.

  • They are widely distributed, with a presence in the animal and plant kingdoms and even in the simplest unicellular organisms.

Therefore, we can conclude that the salivary glands, stomach, and pancreas secrete lipase enzymes to break down triglycerides into monoglycerides, fatty acids, and glycerol.

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