Can I get treated for an STD while Iâm pregnant? It depends. STDs, such as chlamydia, gonorrhea, syphilis, trichomoniasis and BV can all be treated and cured with antibiotics that are safe to take during pregnancy. STDs that are caused by viruses, like genital herpes, hepatitis B, or HIV cannot be cured.
Explain how multicellular life evolved from unicellular life. The first evidence of multicellularity is from cyanobacteria-like organisms that lived between 3 and 3.5 billion years ago. In order to reproduce, true multicellular organisms must solve the problem of regenerating a whole organism from germ cells (sperm and egg cells), an issue that is studied in developmental biology. Therefore, the development of sexual reproduction in unicellular organisms during the climax Mesoproterozoic is thought to have precipitated the development and rise of multicellular life
The transition from one-celled microbes to multicellularity was a huge step in the evolution of life on this planet, but as daunting as this evolutionary step seems, it didn't happen just once. Today's plants, fungi, animals, and various types of algae are all descendants of separate transitions to multicellular life.ight now on earth there are primitive multicellular organisms that, in many ways, resemble the first multicellular creatures that existed a billion years ago. Researchers are using these organisms to understand what kinds of genetic changes are needed to turn a single-celled organism into a multicellular one.