AP Bio Unit 1

Which element(s) make up about 96% of living matter?

• carbon

• hydrogen

• nitrogen

• oxygen

• all of these

The attraction between an oxygen of one water molecule and the hydrogen of another is called a

• ionic bond

• covalent bond

• hydrogen bond

• Van der Waals interaction

What would happen if Oxygen had similar electronegativity to carbon?

• it would form stronger hydrogen bonds

• it would not form hydrogen bonds

• it would have a higher evaporation temperature

• it would be a lipid

Liquid water

• has a low specific heat

• is nonpolar

• is less dense than ice

• has a high specific heat compared to other substances

Peptide bonds happen in

• carbohydrates

• lipids

• proteins

• nucleic acids

Which of the following is FALSE. Saturated fatty acids

• have double bonds

• are solid at room temperature

• are lipids

• are more common in animals

A list of amino acids in the order they appear in a protein is its

• primary structure

• secondary structure

• tertiary structure

• quaternary structure

Multiple, fully folded protein chains interacting with each other is a

• primary structure

• secondary structure

• tertiary structure

• quaternary structure

What does Thymine bond with?

• Guanine

• Cytosine

• Adenine

• Uracil

A covalent bond is likely to be polar when ________.

• the two atoms sharing electrons are of the same elements

• one of the atoms sharing electrons is more electronegative than the other atom

• carbon is one of the two atoms sharing electrons

• the two atoms sharing electrons are equally electronegative