Table 1:
17 protons and 17 electrons
78 protons and 78 electrons
32 protons and 18 electrons
38 protons and 36 electrons
13 protons and 13 electrons
15 protons and 18 electrons
14 protons and 14 electrons
Table 2:
Ba2+ ion
Radon
Polonium
Tin
Selenium
Cesium
Magnesium Ion
IT WAS SUPER TOUGH!!!
Answer:
Gene expression is primarily controlled at the level of transcription, largely as a result of binding of proteins to specific sites on DNA. ... The regulator gene codes for synthesis of a repressor molecule that binds to the operator and blocks RNA polymerase from transcribing the structural genes.
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Do organisms always stay in the same level? Explain your answer. No, organisms such as humans are omnivores, meaning they can eat both meat and plants and may act as 1st, 2nd or 3rd level heterotrophs.
Answer:
B
Explanation:
evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. The theory of evolution is based on the idea that all species? are related and gradually change over time