During DNA Replication, the DNA molecule unzips itself so that there are two free strands of DNA. Both of those strands then create new complementary strands of DNA. Thus every subsequent generation of DNA uses one of the parent cell's strand of DNA as a template, which is why DNA replication is said to be semi-conservative. Hope this helped!
They are the same density.
The event last in 15,600 seconds.
Answer: Option B
<u>Explanation:</u>
We know that there is 60 seconds in one minute i.e., 1 minute = 60 seconds
There is 60 minutes in one hour. i.e., 60 minutes = 1 hour.
Given : An event lasts 4 hours and 20 minutes
4 hours contains 240 minutes,

When the above expressed in seconds,
------>eq. 1
When 20 minutes expressed in seconds,
------->eq. 2
Adding both eq. 1 and 2, we get
4 hours and 20 minutes = 14400 + 1200 = 15600 seconds
The answer is nuclear medicine technologists, they use diagnostic imaging techniques to detect map radioactive drugs in the human body, they administer radioactive pharmaceuticals to patient and them monitor the characteristics and functions of tissues or organs in which they localize. Abnormal areas show higher or lower concentrations of radioactivity than normal ones do. Nuclear medicine technologists are equipped in 1-year certificate programs accessible by hospitals to those who are already radiologic technologists, medical technologists or registered nurse or who are in 2 to 4 year programs accessible in university schools of allied health and oblige to come across the least federal principles on the management of radioactive drugs and the operation of radiation recognition apparatus.