The nucleus of an atom contains protons and neutrons. Hydrogen-1 is the lone exception. It has a single proton in its nucleus. Protons and neutrons, when they make up an atomic nucleus, are called nucleons. Links can be found below for more information.
Vitamin D is an important vitamin that many people are not getting enough of. It is not easy to get sufficient amounts of vitamin D naturally in foods, but many foods are fortified with it. Vitamin D has numerous extremely important functions, although the most commonly thought of is for calcium absorption. Without vitamin D the body cannot properly absorb calcium to promote bone growth and density.
Populations the most at-risk for vitamin D deficiency are breast-fed infants, elderly, individuals with darker skin and others with limited UV ray absorption. If you live in a cold climate with excessive cloud-covering or that keeps you in doors often, you are not getting enough vitamin D from the sun.
To be sure you consume enough vitamin D turn to fish, fortified foods, supplements and sun. UV-B ray absorption from the sun for roughly 5 to 10 minutes a day will promote vitamin D synthesis, however the risks associated with UV ray absorption cause many professionals to recommend seeking your vitamin D from food or supplements. Additionally, if you have dark skin it is much harder for your skin to absorb and synthesize vitamin D, meaning you may need 10 times more sun exposure. Fish, such as salmon, tuna and sardines have high levels of naturally occurring vitamin D. Alternatively, you can purchase milk and Orange Juice fortified with vitamin D. If you are still lacking on vitamin D consumption consider taking a daily supplement.
The recommended daily intake is 200 international units (IU), more if you are over 50. You can be tested for your vitamin D level and make steps to improve it if you are low. Ideally your number should be between 40 and 50. If you find out your number is low you can easily bump it up through supplementation or sun exposure. Need more reason to have healthy vitamin D levels? It is extremely important to your immune system function, and is associated with a reduced risk of cancer and type 2 Diabetes.
Although exact healthy amounts are unclear and vary from person to person, toxicity may occur with levels greatly exceeding 1000 IU per day. However, vitamin D from the sun cannot cause toxicity.
protons and neutrons are found in the nucleus of an atom.
Atoms aren't cells so they don't have a nucleus.
THE ELECTRONS AND NEUTRONS
The center of an atom is called a nucleus (nucleifor plural).Center of an atom is called the "Nucleus".
the denser part of an atom is the nucleus. about 99% of the mass of an atom is concentrated within the atom.
Nuetrons are found in the center of an atom which is called the nucleus.
The proton is located in the atom's nucleus, with the neutrons (if there are any).
The nucleus of a helium atom is composed of two protons and two neutrons. Alpha particles have the same composition as the nucleus of a helium atom.
The center of an atom is called a nucleus (nucleifor plural).Center of an atom is called the "Nucleus".
the denser part of an atom is the nucleus. about 99% of the mass of an atom is concentrated within the atom.
The nucleus forms the centre of the atom. The protons and neutrons are found in the nucleus of the atom.
The center of an atom is the atomic nucleus.
in the nucleus of the atom
Protons are found in the nucleus of atoms along with the neutrons of the atom. The nucleus is always in the centre of the atom.
The nucleus is the central part of the atom. (It's in the center)
Without a nucleus it can not be either an atom or hydrogen.
the center of an atom is called a nucleus. the nucleus contains the atom's protons and nuetrons.
The atomic nucleus contain protons and neutrons; a nucleus is in the center of the atom and is electrically positive
The nucleus of an atom is made of 'Protons' and 'Neutrons'. The nucleus of an atom is then surrounded by 'Electrons'.
The nucleus of an atom is the central part of an atom containing practically all the mass of the atom. The nucleus is composed from protons and neutrons.