Answer:
C. Yes, the results of his experiment were probably inaccurate the
first time.
Answer:
In an experiment, the researcher needs to have a control group with an experimental group where both groups are identical in every way except that the controlled group does not gets the experimental treatment.
Sometimes, it is not possible to do a test or the experiment utilizing a controlled trial (due to ethical reasons or no practical method available). All things considered, a researcher may test a theory by making predictions about outcomes or patterns that ought to be found in nature if the hypothesis is right.
Answer:
A community
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Antibiotics should be taken under the supervision of a well qualified doctor. Course (intake) of antibiotics should be completed as prescribed by the doctor. Antibiotics should be taken in the right amount and at the right time. A wrong dose of antibiotics makes the drug ineffective.Explanation:
Answer:
B. Three
Explanation:
Messenger RNA : mRNA : Encodes amino acid sequence of a polypeptide.
Transfer RNA: tRNA : Brings amino acids to ribosomes during translation.
Ribosomal RNA: rRNA : With ribosomal proteins, makes up the ribosomes, the organelles that translate the mRNA.