Question

QUESTION 29 1. In Avery, MacLeod and McCarty's experiment, what enzyme was present in the mixture of R & S Strain that when injected into the mice did not result in death?

a. Protease b. All the enzymes were present c. DNASE d. RNASE

QUESTION 31

1. Frederick Griffith's experiments resulted in which of the following novel findings?

	a.	Bacteria are sometimes pathogenic/virulent and other times it is harmless.
	b.	none of the answers are correct
	c.	Bacteria can transfer a compound to another bacteria
	d.	If pathogenic bacteria is mixed with non-pathogenic bacteria, the pathogenic bacteria become harmless.

Answer 1

29) in the experiment performed by Avery,Macleod and McCarty ,if they mixed the enzyme DNASE along with the s and R strain and injected into the mice and mice didn't died.

Because the experiment performed by Avery Macleod and McCarty proved that DNA from s bacteria enter into R bacteria as a result of which R bacteria become pathogenic. So if DNASE is mixed with the bacteria that enzyme will degrade the DNA of s bacteria as a result the T bacteria will not get the DNA of s bacteria and remain harmless so mice didn't died.

The RNA degrading enzyme RNase and protein degrading enzyme protease didn't have any effect in the process as they are not associated with transformation.

31) Griffith experiment find out that bacteria can transfer compound to another bacteria.

When Griffith performed the experiments in the bacteria streptococcus pneumoniae he told that ,this bacteria has two strain S which is virulent or pathogenic and R which is nonvirulent. But after the experiment he found out that DNA or protein ( he was not confirmed at that time) from S bacteria enter into R bacteria and which made R bacteria pathogenic.