Answer:
compression and rarefaction
Explanation:
This kind of wave is called a longitudinal wave and an example of such a wave is a sound wave. The center of compression can be analogous to the top of a crest of a transverse wave while the center of the rarefaction would be analogous to the bottom of the trough of a transverse wave.
Answer;
Cell membrane
A cell membrane acts as a boundary that separates things that are inside the system from those that are outside the system.
Explanation;
It is a thin semipermeable structure that surrounds the cytoplasm of a cell.
The membrane functions to protect the integrity of the internal environment of the cell by allowing selective movements of materials in and out of the cell.
The membrane consists of a phospholipid bilayer with proteins embedded in it.
Answer: presence of L-glycerol in the membrane lipids
Bacteria and eukaryotes have D-glycerol in their membrane lipids.
Explanation:
It helps to classify all the different organisms out there in an orderly way.
Answer:
The bones would not have adequate support and stability.
Explanation:
The surfaces of bones are mostly not smooth and have several raised or rough regions which are called bone marking. Depression and opening are the surface markings of bones that serve to provide passage for blood vessels, nerves, tendons, ligaments, etc. Some of these bone markings include sinuses, foramen, fossae, etc.
When these bone openings are larger than normal, the bone will become thinner and would not be able to withstand the forces and stress. It would make the bones weaker and prone to breakage.
