Hairs are mostly fibrous proteins and are composed of keratin, and also the main constituent of skin, nails, wool, woof, feathers etc.
Keratin is the essential fibrous protein which has a structural and protective functions in the epithelium.
Answer: 2. endospores
An endospore is a structure that remains in the dormant state in some bacteria. The term endospore refers to the seed like form, but actually it is not a true spore. Endospore allows bacteria to restrain it's biological activities like obtaining food and reproduction under harsh environmental conditions like freezing and drying. Under favorable conditions these endospores reactivates. The endospore consist of bacterial DNA and ribosome.
Answer:
The correct answer is physical boundary.
Explanation:
In my opinion, the kind of boundary it signifies is the physical boundary. The physical boundary is the most general type and is a naturally taking place obstruction in between the two regions due to the existence of either an ocean, river, desert, or mountain ranges. At various occasions, the political boundaries between the states or the countries form along the physical boundaries.
Because its being viewed by a different angle. nothing looks the same a different angles but something highly symmetric. in this case a cell is definitely not symmetric
That's right, what really happens is that the cell needs a "trash can", just like we do, because sometimes, things can go wrong along the process.
The processes that the lysosomes can be involved are quite a lot, but the main one is the protein making. Why? Well, it's simple, there's a chance of mistake in each part of a protein our cells make through all the process, and when this happens, the cell recognizes it before this protein goes outside the cell, after this recognition, some flags are put in it to mark it.
This mark will work in a way that the protein will go into the lysosome, and in a lysosome, there are several kinds of enzymes, so this protein can be degrated into little components again, the amino acids, and these can be used again in the process of making a new one. This is the process of recycling the protein, whether it's a misfolded protein or even the ones that the body won't need it for now.
