Answer:
a. A chemical derived from dead bacteria can produce heritable changes in the traits of living cells.
Explanation:
In 1928 Griffith conducted an experiment with two strains of bacteria <em>Streptococcus pneumoniae</em>, II-R and III-S. III-S was a virulent strain which killed the mice on injecting with it while II-R strain was non virulent and did not harm the mice. When heat killed III-S strain was injected into mice,they again survived because the bacteria were dead.
Griffith then injected heat killed III-S and live II-R strain into the mice. To his surprise, the mice died. He then concluded that living cells of non virulent II-R strain had inherited a chemical from heat killed virulent III-S strain and thus were able to kill the mice. This chemical was called as transforming principle and later was discovered to be DNA. Non virulent strain had been transformed into virulent strain by taking up the DNA from the latter.
The 4 target exercises would be Hill Sprints, Fartlek, Trail running, “rising” running and which muscle group or groups would be the quadriceps.
<h3>Running</h3>
Running at a steady and steady pace compromises the dynamism of the race, making your strides heavy. The race ends up dragging, and there's no way to improve performance that way.
Break the monotony by inserting short but regular sprints into your workout.
Running is not just about training endurance: the body needs strength
When running, be flexible with speed, stride frequency, and power.
“Vary the surfaces: you only have to win”
With this information, we can conclude that The 4 target exercises would be Hill Sprints, Fartlek, Trail running, “rising” running and which muscle group or groups would be the quadriceps.
Learn more about running in brainly.com/question/17438349
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Answer:
Hey Emanuel, Popeye's chicken sandwich was so popular when it first came out as you may know, but now it has been slow decreasing in popularity for some unknown reason over the world.
Hope that helps you a little and let me know if you want me to explain something else for you. :)
Your friends, younger siblings, a partner, yourself.
