Answer:
They are called Trace elements
they function as catalysts for enzymatic reactions
in some oxidation-reduction reactions (Cu) for some metabolic reactions to for ATPs synthesis,and
also as oxygen carrying elements in Hb and myoglobin muscles e,g(Fe)
Explanation:
Basically Trace elements are group of minerals in small quantity in living organisms.Their functions may be important or essential to the organisms,or needed in small amounts non essentials.
Example of these elements are Fe,Zn,Se,Cu,I,Mn Mb. etc
They are also involved in prevention of some diseases .Generally when they are consumed in large amounts they are toxic to living cells.
others like aluminum, cadmium, mercury lead may beneficial to living organisms,but there role has not yet be verified.
It is called a population since they are all the same species
Answer:
<em><u>"</u></em><em><u>Stars are made of very hot gas. This gas is mostly hydrogen and helium, which are the two lightest elements.</u></em><em><u>"</u></em>
True
Crossing over involves homologous chromosome pairs "crossing over" and exchanging genetic information.
I have attached an image that might help you understand the concept a bit better.
I hope this helps! I'm happy to answer any other questions you might have :)
[Image sourced from: http://www.qsstudy.com/biology/define-crossing-importance]
The extraocular or extrinsic eye muscles, considering their relatively small size, are incredibly strong and efficient. There are the six<span> extraocular muscles, which act to turn or rotate an eye about its vertical, horizontal, and antero-posterior axes: medial rectus (MR), lateral rectus (LR),</span>