The lipid bilayer is a membrane composed of two layers of phospholipids. A phospholipid is a molecule made up of a polar phosphate head and non-polar fatty acid chains.
- The diagram makes reference to the different components of the lipid bilayer.
- The main components of the lipid bilayer are phospholipids and cholesterol.
- The lipid bilayer is also composed of different proteins such as transmembrane integral proteins (channels) and peripheral proteins.
The structures observed in the diagram are as follow:
- Phospholipid molecule (A). Function: structural.
- Polar (hydrophilic) head of the phospholipid (B). Function: stabilize the membrane by its interaction with water.
- Integral glycoprotein (C). Function: signaling pathways and cellular communication
- Oligosaccharide attached to a peripheral protein (D). Function: form the glycocalyx.
- Cholesterol (E). Function: provide fluidity to the lipid bilayer.
- Integral protein (F). Function: signaling pathways and cellular communication.
- Phospholipid bilayer (H-I). Function: Semipermemable barrier that separates the intern cell medium from the surrounding environment.
- Transmembrane integral protein (protein channel) (G). Transport of materials.
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The answer is because energy cannot be created or destroyed.
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Answer:
Etymology. The word arthropod comes from the Greek ἄρθρον árthron, "joint", and πούς pous (gen. podos (ποδός)), i.e. "foot" or "leg", which together mean "jointed leg".
Answer:
A
Explanation:
the function of DNA polymerase is to unzip the double helix structure of DNA by breaking down the weak hydrogen bond
Answer:
The advantage that hominids had when they developed bipedalism is truly great. Walking on two legs instead of four allowed hominids to free up their arms. Using their arms they could now make tools, stretch trees, and use their hands for social communication. The development of bipedalism also allowed for long-distance walking and eventually endurance running. Bipedalism, basically, was a key step for hominids' "brains to grow".
