Question

If mass is not created nor destroyed how can a baby multiply in size to become a fetus in a mom's uterus? Did the first humans start with all the mass to for it to become the amount of people we have today?

Answer 1

mitosis.

Answer 2

Thank you!

Answer 3

As for the second question, it all started with the big bang, when all the madder in the universe was condensed into a mass no bigger then a golf ball. When it exploded, madder went flying everywhere but it then joined up to create what are now planets, stars and consequently solar systems. All life started out as single cell organisms (kind of like bacteria), in fact the original single cell organisms didn't even have all of the organelles. For example, the mitochondria wasn't apart of the cells, initially it was it's own cell. However, the other single celled organisms absorbed it and because the cell didn't have the right enzymes to break it down, the mitochondria became apart of the cell and is now present in every single cell on earth. All of the madder that makes up animals, plants, etc. originated from the big bang, it of course grew through the course of mitosis. When a fetus is made, the sperm and the egg go through mitosis. It is because of mitosis that the first ever organism didn't have to contain all of the madder that now makes up the plants, animals, etc.

Answer 4

If the first organism contained all of the mass required for the billions of living things, we would all be quite small!

Answer 5

Mitosis is the process of a cell's DNA multiplying so that the cell can be divided into two cells.

Answer 6

Well, the process itself is far more complex than what is usually presented in high-school and undergraduate level biology. This is usually gone far more into detail when you take graduate level biology such as embryology.
But here's a simple explanation of how mitosis and fetus development from what I understand. Since you know that mitosis is cell division, the cells of the embryo continuously divide and re-divide to form three distinct layers called as germ layers. These are the ectoderm, endoderm, and mesoderm. These layers "differentiate"(key term!) into various types of tissues, and then organs in the later fetal development stages. So by continuous mitosis, these cells differentiate into various tissues like the nervous tissue and muscle tissue. These tissues differentiate into organs like the brain, heart, limbs, and spinal cord, etc...

Remember that a group of cells make up tissues, a group of tissues make up organs, and organs make up a system and so forth and so forth...

Answer 7

The question you posed seems to miss one crucial part about energy, All the energy mother consumes is used to nourish the fetus and it divides by consuming the energy, energy is converted to mass. If mom stops eating thats the end of story. Hope I have made my point clear.

Answer 8

you mom converts energy into mass, is she a star? because mine only rearranged the atoms she ingested in ways to form structures and tissues.

Answer 9

energy in the sense nutrients or food, another view point.

Answer 10

oh, the layman's term of energy, got it.

Answer 11

LOOL!!