The crown study guide

Which of the following lists is correctly ordered from most inclusive to least?

Domain, Phylum, Order

If the pH of a solution is 11, what is the concentration of hydroxide (OH-) ions?

[OH-] 10^−3 M

If pH of a solution drops from 7 to 5, which of the following is/ are true?

A & B: hydrogen ion concentration increases and decreases by 100x

Hydrocarbons may vary in all the following ways EXCEPT:

# of electrons shared between carbon and hydrogen

Organic acids contain which functional group?

COOH

Which of the following would most likely be liquid at room temp?

A cis-unsaturated fat

Lipids perform all of the following roles EXCEPT?

Enzymes

Which shows a decrease?

Biosphere → community→ cell→ molecule→

In a covalent bond, ________

Electrons are SHARED between atoms

The same molecular formula and different arrangements of covalent bonds, NO carbon double bonds, and no asymmetric carbons represents what?

Structural isomers

Alpha helices and beta sheets are formed in the ______ structure of proteins?

Secondary

What molecule is not used for energy storage in cells? 

Casein 

Which protein structure matches its description? 

Tertiary = interactions between R groups of amino acids

Which of the following is NOT a common feature of ALL living organisms?

Dependence on oxygen

Which of the following is not considered a domain of life?

Plantae

ONLY at neutral pH:

Hydroxide ion concentration=hydrogen ion concentration

Which of the following statements about buffers is NOT true?

Hydrochloric acid is an important biological buffer

Hydrocarbons may vary in all the following ways EXCEPT:

Number of electrons shared between carbon and hydrogen

T or F: The monomers in starch and cellulose are the same, but linkages are different

True

Which of the following classes of organic molecules is correctly paired with its linkage type?

Triglyceride (lipid): ester

In general, biological macromolecules are built by:

Hydrolysis

Which of the following is NOT a grouping of the 20 amino acids?

Halogenated