Homointernal adalah hewan yang bersuhu tubuh panas dan tetap hewan-hewan ini adalah:
1)Ikan, terbagi
-ikan hiu
-ikan pari
2)Amfibi terbagi
-Kodok
3)Reptil
-buaya
-kura-kura
4)Burung terbagi
-ayam
-merak
-kasuari
Protista is <span>very </span>diverse kingdom,. It includes a wide range of organisms that are not particularly related. The members<span> of the protista kingdom are called </span>protists. They are not <span>animals, </span>plants or fungus.
<span>|Protista are reclassified as scientists learn more about their diversity.
Correct answer: C</span>
Answer:
Dopamine
Explanation:
Dopamine is an inhibitory neurotransmitter involved in the pathology of schizophrenia.
<h2>DNA </h2>
Explanation:
1) Experiment done by Griffith:
- Griffith used two related strains of bacteria, known as R and S
- R bacteria were nonvirulent, meaning that they did not cause sickness when injected into a mouse whereas mice injected with live S bacteria developed pneumonia and died
- Griffith tried injecting mice with heat-killed S bacteria (that is, S bacteria that had been heated to high temperatures, causing the cells to die), the heat-killed S bacteria did not cause disease in mice
- When harmless R bacteria were combined with harmless heat-killed S bacteria and injected into a mouse, not only did the mouse developed disease and died, but when Griffith took a blood sample from the dead mouse, he found that it contained living S bacteria
- Griffith concluded that the R-strain bacteria must have taken up what he called a transforming principle from the heat-killed S bacteria, which allowed them to transform into smooth-coated bacteria and become virulent
2) Experiment done by Avery:
- Avery, McCarty and MacLeod set out to identify Griffith's transforming principle
- They began with large cultures of heat-killed S cells and, through a long series of biochemical steps progressively purified the transforming principle by washing away, separating out, or enzymatically destroying the other cellular components
- These results all pointed to DNA as the likely transforming principle but Avery was cautious in interpreting his results
- He realized that it was still possible that some contaminating substance present in small amounts, not DNA, was the actual transforming principle
3) Experiment done by Hershey and Chase:
- Hershey and Chase studied bacteriophage, or viruses that attack bacteria
- The phages they used were simple particles composed of protein and DNA, with the outer structures made of protein and the inner core consisting of DNA
- Hershey and Chase concluded that DNA, not protein, was injected into host cells and made up the genetic material of the phage
