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Mrrafil [7]
3 years ago
6

Which is characterized by an absence of jaws?

Biology
2 answers:
shusha [124]3 years ago
4 0
I believe the correct answer from the choices listed above is the first option. A lamprey is characterized by an absence of jaws. This animal is have no jaws and are only full of teeth. <span>Lampreys are any jawless fish of the order Petromyzontiformes. Hope this answers the question.</span>
Novosadov [1.4K]3 years ago
3 0

The above answer is correct. Lampreys don't have jaws, possessing just cartilage.

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the salivary glands, stomach, and pancreas secrete ____________ enzymes to break down triglycerides into monoglycerides, fatty a
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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>:

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  • 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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