Griffith first proposed the "transformation principal" through his studies on Streptococcus pneumoniae bacterium.  Which of the following molecules was later found to be responsible for this phenomenon?

A. protein
B. RNA
C. bacteriophage
D. phage
E. DNA


Answer: E

Biology & Microbiology

You might also like to view...

Candida albicans is normally found in the vagina but does not usually cause disease because the acidic pH created by the lactobacilli prevents their overgrowth.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Allosteric enzymes

a. have regions that bind with inhibitor or activator molecules. b. are associated with important energycarrying nucleotides. c. are not affected by temperature or pH. d. have two active sites. e. have all of these

Biology & Microbiology

A 25-year-old woman has just had the Implanon or Nexplanon system inserted for contraception. Six months later, she is concerned because she is not menstruating. This is ________, and the reason is that she has an increased level of ________

A) normal; progesterone B) abnormal; follicle stimulating hormone (FSH) C) normal; estrogen D) abnormal; luteinizing hormone (LH)

Biology & Microbiology

Which of the following diseases is transmitted by the bite of human body lice?

A. bubonic plague B. tularemia C. Pontiac fever D. trench fever E. brucellosis

Biology & Microbiology