First chemicals used to induce cancer? A. Bleach B. Battery acid C. Antifreeze D. Coal tar condensates

the transfer of genetic material during bacterial conjugation requires? a. flagella b. sex pili c. periplasmic flagella d. fimbriae e. cilia

What is the difference between an antiseptic and a disinfectant?  A. Antiseptics are used against microbes on non living objects, disinfectants are used on living tissue.  B. Antiseptics are used against microbes outside the body, and disinfectants are used inside the body.  C. Antiseptics are used against microbes inside the body, disinfectants are used outside the body.  D. Antiseptics are bactericidal against microbes, disinfectants are bacteriostatic.  E. Antiseptics are used against microbes on living tissue, disinfectants are used on non living objects.

Describe why cancer is so difficult to treat. Give specific details to support your explanation based on what you know about the causes of cancer.

Which cell is responsible for skin pigmentation?     A. melanocytes   B. Merkel's cells   C. keratinized cells   D. lucidium cells

Which stain is used to distinguish differences between the cell walls of medically important bacteria? a. simple stain b. acridine orange stain c. Gram staind. negative stain

The backbone of DNA molecule is made of?   a. nucleotides   b. alternating phosphates and bases   c. alternating bases and sugars   d. alternating sugar and phosphate molecules

why are UV rays dangerous to our bodies? What can they do?    A. UV rays can mutate the DNA in our skin cells   B. UV rays can cause skin cancer   C. UV rays can destroy folate   D. All of the above

Viruses are composed of which type of genetic material inside of a protein shell? a. Not all viruses contain genetic material b. RNA c. DNA d. DNA or RNA