The payot (pronounced pay and the ot from hot) have nothing to do with virginity. The Bible commands that the hair on the temples is not to be cut, thus the hair on the temples grown much longer. This mitzvot only applies to Jews.
The curls are either natural or (more often) curled to look nice. Many people simply tuck the hair behind the ears.
No. Along with the rest of mankind, Jews are commanded to have children (Genesis ch.1). The great majority of Jews do so. Religious Jews get married relatively young (early 20s is common). We are also commanded to remain virgins until marriage.
The Jewish sidelocks are called Peyot. They are grown by some (not all) Orthodox Jews, in a voluntarily strict interpretation of the command to not shave off our sideburns (Leviticus 19:27). Among those who do grow them long, some curl the sidelocks (these are the "braids" you mentioned), and some don't. Typically, many Hassidim (one branch of Orthodox Jews) have the custom of curling the sideburns, while the Yeshiva community grows them to about 3-4 inches and puts them behind the ears.It is not something particularly reserved for Rabbis, but in a particular community all or most of the men will have peyot.
No.
Yes, non-Orthodox Jews can become Orthodox by becoming more observant. Non-Jews can become Orthodox Jews through Orthodox conversion.
Orthodox Jews are strictly observant. Hassidic Jews are even more strict.
Orthodox and Ultra-Orthodox Jews are strict followers of Jewish law.
Unfortunately, in Israel, only Orthodox Jews get all the special privileges.
They are Jews who keep the Torah.
Haredi Jews are ultra orthodox Jews found around the world.
Orthodox Jews or Torah Jews.
Symbols do not destinguish Orthodox Jews from other kinds of Jews. Orthodox Jews are distinctive in that they adhere to the idea of the of the binding nature of Jewish law.
In South Africa, like most countries aside from the USA and the UK, the Jewish communities are overwhelmingly Orthodox. Whether or not a person who attends an Orthodox Synagogue is Orthodox in his "non-synagogue activities" is purely up to the believer. So, some members of the Orthodox community may not actually be observant Jews and would appear like Reform Jews in the USA. However, they would not call themselves Orthodox, but Jews who happen to belong to an Orthodox synagogue. Actual Orthodox Jews in South Africa would be indistinguishable from Orthodox Jews in the USA.