Make Up Quiz

We say water is a polar molecule because

• the oxygen atom is negatively charged and the hydrogen atom is positively charged

• the oxygen atom is partially negatively charged and the hydrogen atom is partially positively charged

• the ionic bond between the atoms creates a charge differential

• none of the above

When an atom is electronegative, it means it

• pushes electrons away from it

• has a negative charge

• pulls electrons toward it

• has a bad attitude

These are all biological monomers

• Amino acids

• Glycerol+fatty acids

• Starch

• Nucleotides

• Triglycerides

What is the role of DNA

How many valence electrons does carbon have, and how many bonds can carbon form?

• 1

• 2

• 6

• 4

Is sodium chloride (table salt) - Na Cl- organic??

• yes

• no

Which of these will increase your risk for developing a blood clot or heart disease?

• Saturated fatty acid

• Unsaturated fatty acid

• Neither

• Both

The primary function of an enzyme is to slow down biological reactions

• true

• false

• sometimes true

An endergonic reaction ________________, and an endothermic reaction ________________.

• Absorbs energy, releases heat

• Releases energy, absorbs heat

• Absorbs energy, absorbs heat

• Releases energy, releases heat

Lactose is a

• dipeptide

• diglyceride

• disaccharide

• nucleic acid