Answer:
c. The harmless bacteria had been transformed.
Explanation:
Fredrick Griffith carried out the first experiment that showed bacteria can get DNA by transformation in 1928.
He used two different strains of the bacteria Streptococcus pneumoniae a)type-III-S or smooth strain-Covered by a protective polysaccharide capsule hence lethal
b) type II-R or rough strain-Lacked the polysaccharide hence non-lethal
In his experiment he observed heat killed Type-III-S strain was not able to kill the mice. However, when its remains was added with rough strain then the blend was able to kill the mice.
When he collected blood from the dead mice it had live strains of both smooth and rough type.
He came to a conclusion that non-lethal type II-R strain was transformed into lethal type II-S strain by a "transforming principle" that was supposed to be the part of dead III-S strain bacteria.
Answer: As we all grow, why don’t the cells just get bigger instead of getting more of them? Cells are limited in size because the outside (the cell membrane) must transport the food and oxygen to the parts inside.
Explanation:
Answer:
Petroleum and other fossil fuels will most likely increase in price because they will be scarce in quantities since more and more people are using them to power their cars and other machines.
Explanation:
Answer:
big pp BIG PP small pp :(
