Answer: By definition, if the atomic number =
7
, then there are 7 protons, 7 electrons, and 8 neutrons!
Explanation:
The atomic number is by definition the number of protons, positively charged particles, contained within the atomic nucleus. So if there are 7 protons, there MUST be 7 electrons, 7 negatively charged particles. Why? Because matter is electrically neutral, and positive and negative particles must be equal.
Electrons have negligible mass; the mass number depends on the number of protons contained within the nucleus, PLUS the number of neutrons. Given that we have 15 N
, there must be 8 neutrons contained within the nucleus. does this help?
The answer is Over-the counter.
Over-the-counter are medications sold without prescription. They got their name they are passed over the counter from the pharmacist to the patient. However, they, together with prescription and illegal drugs, are able to change the central nervous system.
<span>James Ussher was a creative scholar, a church leader
and became famous for his genuine letters of the church. He is the Archbishop
of all Ireland and majorly impacted Reformation theology. He is best
known for his chronology research that concluded Adam was created in 4004
B.C. In reality, Ussher was a first-class scholar very involved in
scholarly research. He regularly interacted with “the most learned men of the
day” to intellectually savor their ideas. He was also “a real connoisseur of
books,” and there was scarcely a book in any British library that he was
unfamiliar with. While James Hutton is known as the Father of Modern Geology,
Hutton is a Scottish Geologist and a naturalist who originated the concept of
earth’s crust during geological history, which explains the features of the
Earth's crust by means of natural processes over geologic time. Hutton
had formulated controversial theories of the origin of the earth and of
atmospheric changes known as 'uniformitarian’s'. This paved the way for modern
geological science.</span>
Answer:
each of the two daughter DNA molecules contains one strand from the original DNA molecule and one newly synthesized strand.
Explanation:
DNA replication is a semi-conservative process. The two parental DNA strands are separated from each other by the action of helicases. The separated DNA strands serve as the template. Primase enzyme forms primers which are elongated by DNA polymerase enzymes. These enzymes elongate the primer by the addition of deoxynucleotides complementary to the sequence of the template DNA strand.
Therefore, DNA replication forms two DNA double helices from one parental DNA molecule. Each of the daughter DNA molecules contains one parental DNA strand and one newly formed DNA strand making the process semi-conservative.
