1. what is one distinguishing feature between domain bacteria and domain archaea?
a. bacteria and archaea have different cell membrane composition.
b. one group is prokaryotic, and the other is eukaryotic.
c. bacteria have flagella, but archaea do not.
d. archaea are much larger than bacteria.

2. why are protists and fungi placed in the same domain?
a. they are both types of bacteria.
b. both have membrane-enclosed nuclei.
c. protists and fungi have similar physical features.
d. like plants, protists and fungi are photosynthetic.

3. why is the system of binomial nomenclature useful?
a. binomial nomenclature is in latin, so it allows people who speak that language to converse easily about an organism.
b. once a species is scientifically named, it will not be changed, so studying an organism's history is easier with its binomial name.
c. it allows people around the world to use only one name for an organism, and it gives information about the relationship of that organism to others.
d. the naming system consists of the phylum and species of an organism, so it is simple to determine organisms' phyla from their scientific names.

4. which statement best describes why biological classification of organisms has changed over time?
a. the older systems of biological classification were not based upon valid scientific reasoning.
b. the discovery of new species means that previously existing species became outdated.
c. as scientists have developed new techniques, evolutionary relationships have become better understood.
d. similarities in physical characteristics can now be determined at the microscopic level, making classification more accurate. description