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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Answer:
Which of these statements is correct about wood and common salt?
Common salt is a mineral because it has a definite crystal structure but wood is not a mineral because it is organic.
Explanation:
Common salt occur in sea and are made of chemical constituents such as sodium chloride and occur in its natural state while wood is organic as the natural form is the timber that occur naturally in the forest. Before a timber is converted into a wood, it has passed through series of processes before such conversion to a finished product
The right answer is They compare quantities for particular categories.
The bar graph is composed of horizontal bands. The categories are presented on the ordinate (Y axis - vertical). The length of each bar is measured by the values arranged on the abscissa (X axis - horizontal).
It draws attention to the comparison of values rather than a period followed by time (as in the case of the bar chart).
Economic growth means an increase in real output (real GDP). ... The environmental impact of economic growth includes the increased consumption of non-renewable resources, higher levels of pollution, global warming and the potential loss of environmental habitats.
Answer:
To me we wouldn't know as much as we do. There is so much they don't want us to know about space. Just watch the moon at night and you can get a better answer.
