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
Complex multicellular forms of life are surprisingly recent on our planet. They have existed only for about 600,000,000 years or slightly more. When these creatures began to appear, 87% of the earth's existence had already gone by, and 83% of the total time life has existed had already passed as well.