Classification

Front 1

Kingdom

Back 1

A main classification of living organisms that includes all animals.

Front 2

Domain

Back 2

The hierarchy of biological classification's eight major taxonomic ranks, which is an example of definition by genus and differentia.

Front 3

Eukarya

Back 3

any cell or organism that possesses a clearly defined nucleus.

Front 4

Prokaryotes

Back 4

single-celled organisms that are the earliest and most primitive forms of life on earth.

Front 5

Autotroph

Back 5

an organism capable of synthesizing its own organic substances from inorganic compounds

Front 6

Heterotroph

Back 6

an organism requiring organic compounds for its principal source of food

Front 7

Evolutionary Tree

Back 7

a diagram showing the evolutionary interrelations of a group of organisms derived from a common ancestral form

Front 8

Which of these scientific names of species is correctly written?

Back 8

Crotalus horridus (the timber rattlesnake)

Front 9

What is the most inclusive of the major taxonomic categories?

Back 9

domain

Front 10

ow does molecular genetics help us to distinguish and evaluate the degree of evolutionary relatedness among species?

Back 10

by allowing us to compare nucleotide sequences of DNA from the same chromosomal regions from different species

Front 11

What is the least inclusive of the major taxonomic categories?

Back 11

species

Front 12

Why can classification schemes (taxonomies) change from year to year?

Back 12

all of the above

Front 13

Which of the following is NOT used by taxonomists (biologists who classify organisms) to distinguish one species from another?

Back 13

similar features due to convergent evolution acting on distantly related species

Front 14

Changes at the domain or kingdom levels of classification occur __________ than at the species level.

Back 14

more rarely

Front 15

The most fundamental difference between prokaryotes and eukaryotes is that eukaryotes have __________.

Back 15

a membrane-bound nucleus and other organelles

Front 16

hich of the following characteristics is believed to be an evolutionary advantage of multicellular eukaryotic organisms?

Back 16

Both B and C are correct.

Front 17

Using the evolutionary chart (link below) as a guide, indicate which species of primate are most closely related. Start with the chimp as number 1 and continue to number the rest of the primates in descending order as they diverge farther and farther from the chimp.

Back 17

chimp, pygmy chimp, human, gorilla, orangutan, gibbon

Front 18

What is a domain?

Back 18

the broadest taxonomic category, of which there are three

Front 19

Which of the following would be an advantage of multicellularity?

Back 19

all of the above

Front 20

Pretend that you could divide a funnel into seven horizontal layers and then you put all of the taxonomic categories into the funnel. Which taxonomic categories, representing individual species, would trickle out of the bottom of the funnel, one at a time?

Back 20

genus and species (or genus species, i.e., the scientific name)