Answer:
A carbon atom can form up to four covalent bonds as one carbon atom has four valence electrons (in outermost shell). It is a fact that the number of valence electrons in a atom determines the number of covalent bonds it will form. Thus, each electron in carbon atom is used to form four covalent bonds with various four atoms.
Explanation:
A bond between a carbon and hydrogen atom is a non-polar covalent bond. The non-polar covalent bond are the bonds between two atoms which share equal number of electron(s) with each other. Example: as in case of methane, where one carbon atom shares its 4 outer valence electrons with four hydrogens by sharing equal number of electron.
In contrast, polar covalant bond are the bonds between two atoms which share unequal number of electron(s) with each other. Thus these bonds are partially ionic.
Insulin is released into the blood when oxygen levels are low and blood glucose levels are high
Antibodies are located in human body,and they are giant protein molecules.
<h3>What are antibodies?</h3>
Antibodies are protein molecules, they are large and are used by the immune system to identify objects that are foreign such as harmful microrganism.
They can also destroy the effect of this foreign body by identifying the pathogens antigens.
Therefore, antibodies are giant protein molecules.
Learn more on antibodies here
brainly.com/question/785248
<span>The middle childhood is the period between ages 7 and 11.</span>
One of the major advances in brain function in middle childhood is the development of automatization. Children this age can master plenty of skills with a little motivation and a lot of practice.
<span>They also immerse themselves in play and it is important for them to get a lot of healthy, physical activity.</span>
