MasteringA&P

In plasma, a typical body fluid, protein floating around would be considered to be which of the following?

A solute, specifically both a colloid and an electrolyte. Since most proteins have a negative charge, they are also considered to be electrolytes.

Which of the following is not produced through chemical bonding? atoms adipose (fat) tissue cells the heart

Atoms. Chemical bonding begins with atoms, it does not produce them.

What happens in oxidation-reduction (redox) reactions?

Electron Exchange occurs

Atoms of oxygen have a total of 8 electrons. Are these atoms stable, and why or why not?

No, because the atoms have only 6 valence electrons, but need 8 for stability.

If a molecule contains only carbon and hydrogen, it is __________ __________.

Non-polar covalent

What type of compound is NOT likely to dissolve in water?

Non-polar covalent bond

Cortisol is a type of lipid hormone. Which type of lipid would cortisol be classified as?

Steroid

A mixture that contains insoluble particles that are large enough to be visible

Suspension

Which two organ systems work to maintain pH balance in the body?

Urinary and Respiratory

Which parts of atoms can interact (react) to form chemical bonds?

Valence electrons

Foods are broken down into their building blocks by adding water. This would be an example of which characteristic of water?

Water acts as a reactant.

Water acts to dissolve molecules in the body. How does water dissolve the salt (NaCl) in your mouth from a salty pretzel?

Water acts as a solvent because the partial negative charge on the oxygen in water attracts sodium, while the partial positive charge on hydrogen attracts chloride. This results in the separation of sodium from chloride, thus breaking the ionic bond.

Carbon atoms have four valence electrons. Are they likely to react with other atoms, and why or why not?

Yes, because they can become more stable by doing so.