Answer:
Chromosome 11 is made of over
⇒ 130 million base pairs.
Approximately ⇒ 2000 genes are found on chromosome 11
Answer:
They can mimic a natural hormone and lock onto a receptor within the cell. The disruptor may give a signal stronger than the natural hormone, or a signal that occurs at the "wrong" time.
Explanation:
Answer:
42
Explanation:
Atoms have a neutral charge overall, which means they have an equal numbers of positively-charged protons and negatively-charged electrons. Here, an atom of arsenic with 33 electrons must also have 33 protons.
The mass of any atom is contained in its <em>nucleus</em>, a part made up of protons and neutrons - particles with no charge. Both protons and neutrons are exactly 1 atomic mass unit each, so to find the atomic mass of an atom, we can use the formula
(# of protons) + (# of neutrons) = atomic mass
or equivalently:
atomic mass - (# of protons) = (# of neutrons).
For arsenic, we have an atomic mass of 75 amu and 33 protons, so using our formula:
# of neutron = 75 - 33 = 42 neutrons
They recommend for women at the age of 20 to start doing regular "breast self exams" BUT at the age of 40 is when they start screening mammograms because your insurance should cover all of that cost.. Something like that.
> Breast exams for ages | 40 - 49 | 1 - 2 years but by the time you turn 50 it becomes a yearly appoint/screening
