Transferring microbes from culture to sterile medium without contamination of the culture, yourself, others, or the environment is termed .

Aseptic technique

Explanation:

Aseptic technique is employed to avoid environmental bacteria (e.g., of bacteria source can be from the air) from infecting cultures. This explains why flaming (fixing the Bunsen burner in such a way that its flame gives an inner and outer cone) of the mouths of the culture tubes is necessarily carried out before and after transferring bacteria. It involves transfer of microbes from pure culture to sterile culture without contamination of oneself, fellow workers, the environment, the source culture, or the medium being inoculated.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.