True or false: vitamin b12 can build up in your system and cause damage.

Which form of reproduction is most commonly used by prokaryotes and involves the replication of genetic material before the division of the cell into two daughter cells?

Which is composed of amino acids and determines all the structures and functions of organisms? DNA ribosome mRNA protein

How many presents are humans made from water?

Which of the following statements is true? Bone is not an actual tissue because it is too hard. The most abundant tissue in most animals is muscle tissue. Axons receive information and dendrites transmit it. Blood is a special type of nervous tissue.

2. Which of the following is a main part of the cell theory? a. All organisms are made up of one or more cells. b. All the life functions of an organism occur within cells. C. All cells come from preexisting cells. d. All of the above

True or false? Gas particles never touch each other. A. True B. False

A butterfly young shed its skin a lot of time. Why does it needs to undergo the process if moulting?

What are three to nine chain carbohydrates called? A. Polysaccharides B. Monosaccharides C. Trisaccarrhides D. Oligosaccharides

What gas is necessary for the candle to efficiently burn?

Why aren't mineral deposits harvested from deep water?