Answer: presence of L-glycerol in the membrane lipids
Bacteria and eukaryotes have D-glycerol in their membrane lipids. 
Explanation:
 
        
             
        
        
        
Turtles belong to the order <u>Testudines</u><u>.</u>
Snakes and marine iguanas below to the order <u>Squamata Oppel</u>
<h3>What are reptiles?</h3>
Reptiles are the animals in the class Reptilia, a paraphyletic grouping comprising all sauropsids except birds. Living reptiles comprise turtles, crocodilians, squamates and rhynchocephalians.
The marine iguana, also known as the sea iguana, saltwater iguana, or Galápagos marine iguana, is a type of iguana that can only be found in the Galapagos Islands. It is a marine reptile that can forage in the sea for algae, which accounts for nearly all of its diet, making it unique among modern lizards.
Turtles are a type of reptile known as a Testudine, and they have a shell made primarily of their ribs. The Pleurodira and Cryptodira groups of modern turtles are distinguished by the way their heads retract.
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Answer:
Key molecules that contain carbon include proteins, nucleic acids, carbohydrates and lipids. Carbon is an integral part of many biological processes, including reproduction, photosynthesis and respiration. We often assume that life in other parts of the universe, if we ever find it, will be carbon-based.
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Answer:
C. Are hydrophobic
Explanation:
The plasma membrane consists of phospholipids. Phospholipids have a hydrophilic head, and hydrophobic tails that are in the interior of the plasma membrane.