Yes. Most, of a galaxy's mass is stars and nebulae, not black holes.
That depends exactly how you interpret the term "strong". In its vicinity, the black hole distorts space more than anything that is NOT a black hole; so much that nothing can get out of the black hole. But at some standard distance, a galaxy, for example, would have more gravitational attraction than a black hole, simply because it has more mass. At least, so far no black hole of the mass of an entire galaxy has been found.That depends exactly how you interpret the term "strong". In its vicinity, the black hole distorts space more than anything that is NOT a black hole; so much that nothing can get out of the black hole. But at some standard distance, a galaxy, for example, would have more gravitational attraction than a black hole, simply because it has more mass. At least, so far no black hole of the mass of an entire galaxy has been found.That depends exactly how you interpret the term "strong". In its vicinity, the black hole distorts space more than anything that is NOT a black hole; so much that nothing can get out of the black hole. But at some standard distance, a galaxy, for example, would have more gravitational attraction than a black hole, simply because it has more mass. At least, so far no black hole of the mass of an entire galaxy has been found.That depends exactly how you interpret the term "strong". In its vicinity, the black hole distorts space more than anything that is NOT a black hole; so much that nothing can get out of the black hole. But at some standard distance, a galaxy, for example, would have more gravitational attraction than a black hole, simply because it has more mass. At least, so far no black hole of the mass of an entire galaxy has been found.
No. At least, the black holes in existence so far are much smaller in size, and have much less mass, than a galaxy. However, note that the black hole in the center of the largest galaxies can have more mass (but not more diameter) than some dwarf galaxies.
If you mean that somehow the black hole can be removed or flung out of the galaxy than, no it can't, because the galaxy (or more specifically all the stars, gases, and asteroids, and dust clouds) orbit around the central black hole in a galaxy, they are just moving to fast and to far away to be pulled into the black hole, and if a black hole where to move the surrounding stars and debris would follow is path.
No - The volume of the Milky Way galaxy is larger than the volume of its host black hole. The accumulated mass of the Milky Way galaxy is greater than the mass of its host black hole. The density of the Milky Way galaxy is much smaller than the density of its host black hole.
The black hole in the Andromeda galaxy is estimated to be around 140 million times more massive than our sun. It is located at the center of the galaxy and plays a crucial role in shaping its evolution and dynamics.
The universe definitely has more than one black hole. Just in our galaxy alone there's an estimated 100 million of them, and the observable universe has at least 100 billion galaxies.
Yes, a galaxy is typically much larger than a black hole. Galaxies can contain billions to trillions of stars and vast amounts of gas and dust, while black holes are typically formed from the remnants of massive stars with a gravitational pull so strong that not even light can escape from it.
Almost every galaxy has a super massive black hole in its centre and this fact is widely accepted now days . Milky way galaxy also have a super massive black hole of its own, weighing more than 4 million times more than our sun's mass. Andromeda galaxy is our nearest neighbour having a super massive black hole in its centre weighing 114 million solar masses .
All galaxy's contain one or up to 2 (that we know of) super massive black holes. these keep all the stars, planets everything together. Everything in the galaxy orbits the super massive black hole. It is also a theory that there is a much larger black hole than a super massive black hole, (about a thousand times bigger) in the centre of the universe.
Good question - The black hole(s) (i.e. Sagittarius A*) at the center of the Milky Way are estimated to be a little more than 4 million solar masses (e.g. stars like our Sun). The Milky Way galaxy is a barred spiral galaxy 100,000-120,000 light-years in diameter and has been estimated to be hosting 200-400 billion stars, and at least as many planets. Therefore the answer is that the accumulated mass of the Milky Way galaxy (of course excluding its centric black hole(s)) is greater than the mass of the black hole(s) at the center of the Milky Way.
The center of many galaxies is suspected to house a "supermassive black hole". The black hole may even weigh more than all the stars in that galaxy combined. Spiral galaxies are more likely to contain a supermassive black hole.
Most identified black holes are much smaller than the Milky Way. If there was a black hole the mass of the Milky Way (which is probably 100,000 light years across) it would only be about 2/5ths of a single light year in width. Even the largest known black hole is much smaller than our galaxy.