PCBs were frequently used in electrical transformers. A young man digs in an abandoned industrial site, finding old transformers, and sells the copper wire from them to a scrap yard. What health problems might the young man have in the future?

What will be an ideal response?


PCBs may have a feminizing effect on him and reduce his sperm count or even cause prostate or testicular cancer.

Biology & Microbiology

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Pseudomonads are aerobic, gram-positive, polar flagellated, bacillus-shaped cells

Indicate whether the statement is true or false.

Biology & Microbiology

Genetic maps are constructed by estimating the distances between linked genes based on the calculation of ____________________

Fill in the blank(s) with correct word

Biology & Microbiology

Active transport ________.

utilizes energy cannot transport molecules against a concentration gradient cannot be saturated requires cofactors

Biology & Microbiology

What is the correct unit of measurement for the size of most viruses?

a. picometers b. nanometers c. micrometers d. centimeters e. decimeters

Biology & Microbiology