What did j. j. thomson’s experiments with cathode ray tubes imply about the mass of an electron?
electrons are many thousand times larger than the nucleus and negatively charged.
electrons are many thousand times smaller than the nucleus and positively charged.
electrons are many thousand times smaller than the nucleus and negatively charged.
electrons are many thousand times larger than the nucleus and possess no charge.

Correct C). Electrons are many thousand times smaller than the nucleus and negatively charged.

J.J Thomson in his first experiment with cathode ray tube discovered that cathode rays and the charge that was deposited are intrinsically linked together.

In his second experiment, he discovered that the charge in the cathode ray tube was negative. And from that, he deduces that cathode rays are made of negatively charged particles.

the right answer is a. skin cells forming from sunlight.

the liver is an organ endowed with a fantastic ability to regenerate

. thus, if a hepatectomy (ablation) of 70% of the hepatic mass is performed in the rat, there is complete recovery in 7 to 10 days.

prokaryotes are beings that have existed since the existence of life on earth, and do not come from another realm.

ribosomes are organelles that exist naturally in eukaryotes, either in free form or attached to the endoplasmic reticulum.

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