Answer:
Half-Life is the time for a substance (U-235 in this case) to decay to 1/2 its original mass.
Since the problem is asking for the time for U-235 to decay to 1/2 its original mass (100 grams to 50 grams) then the decay time is 1 half-life, or 700 million years.
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Answer:
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The answer is D- it allows the phage DNA to be replicated during bacterial replication
Bacteriophage can use two different cycles: the lysogenic cycle or lytic cycle.
the lysogenic cycle is a method by which a bacteriophage can replicate its DNA using a bacteria cell. In this cycle the DNA is only replicated, not translated into proteins so the bacteria won't be killed.
Answer:
Tooth enamel is the hardest substance in the body.
This resilient surface is 96 percent mineral, the highest percentage of any tissue in your body – making it durable and damage-resistant.
Answer: D
Explanation: All of the Above
