Question

What did Frederick Griffith find in his work with pneumonia-causing bacteria and mice?

All bacteriophages cause pneumonia in mice.
The carbohydrate coat on bacteriophages causes pneumonia.
A substance from the pathogenic cells was transferred to nonpathogenic cells, making them pathogenic.
Heat-killed pathogenic cells caused pneumonia.

Answer 1

@Somy @pooja195

Answer 2

http://en.wikipedia.org/wiki/Griffith's_experiment
read
your answer is there

Answer 3

is it c or d @Somy

Answer 4

i dont know
i gave you the link

Answer 5

i know and i dont kniw what one it is still

Answer 6

reread last two paragraphs

Answer 7

what is that

Answer 8

assesment

Answer 9

@Somy

Answer 10

Are you taking a quiz/test? like an exam

Answer 11

no homework

Answer 12

did u read the link i posted?
if so
can u say what it said there
specially in last two paragraphs

Answer 13

just tell me what you read there
in your own words

Answer 14

yes i read it the s strains were killled by heat and then the dead ws strains were put togeter with the r strains and the mice died (Transforming principal)

Answer 15

so i think the answer is d?

Answer 16

@Somy

Answer 17

good u got the point)
but the options here i quite off =_=

Answer 18

i dont think its d

Answer 19

what do you think it is then? @Somy

Answer 20

heat killed pathogenic cells caused the non virulent bacteria to transform to virulent form (DNA recombination, to be specific - its called 'transformation')
so it looks like C thought i dont know hmmm
wait i have a good animation on this

Answer 21

so C?

Answer 22

i think so
tho chances are it might be d

Answer 23

but well C is more reasonable for me

Answer 24

http://www.sbs.utexas.edu/psaxena/MicrobiologyAnimations/Animations/HorizontalGeneTransfer/PLAY_horizontal.html

Answer 25

i think it is c then @Somy