1. It is the one-celled embryo known as the zygote.

2. Note that the zygote-the one-celled nucleus-at no stage contains a single nucleus.

3. A small, typically one-celled, prokaryotic micro-organism.

4. Any of a group of one-celled, microscopic green algae characterized by great variation in cell shape.

5. Malaria is caused by a one-celled parasite called a plasmodium.

6. The one-celled animals react to food by moving toward it and react to danger by moving away.

7. Protozoan Diseases, Protozoa are one-celled animals found in great numbers almost everywhere in nature.

8. A one-celled animal or plant cannot, of course, survive the destruction of its one cell.

8. try its best to collect and build good sentences.

9. The one-celled embryos, created at the University of Newcastle, were destroyed within days, as required by law.

10. For example, one-celled animals always live in water, which helps the cell hold its shape.

11. There are five kingdoms: animals, plants, fungi, chromists—including one-celled plants such as diatoms—and protozoa, or one-celled organisms.

12. The nasty bacterium responsible is a one-celled microscopic organism that kills by causing an infection in the small intestine.

13. By showing algae's essential role in the evolution of photosynthesis, it also explores the innumerable species of plants which all have their origins in this one-celled life form.

14. The sometimes tubular, sometimes bean-shaped structures are remnants of an ancient bacterium captured by a one-celled organism more than a billion years ago, experts believe.

15. Ultraviolet radiation may also damage marine life by killing one-celled plants called phytoplankton, which form the base of the ocean's food chain.

16. In short, all living things are developments from these one-celled organisms. They have developed step by step through change upon change from these first, simple, living things.

17. Life began, men think, in the salty sea, Near the land, where the waters Were not deep, very small one-celled organisms came into being.

18. If there was not a drive toward complexity, why not stop at bacteria and invent millions of more one-celled varieties.