ATI TEAS EXAM LIFE SCIENCE LATEST
2022 RATED A
The eight levels of taxonomy hierarchy (biological classification system): ✔✔Domain, Kingdom,
Phylum, Class, Order, Family, Genus, Species.
What does the domain level co
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ATI TEAS EXAM LIFE SCIENCE LATEST
2022 RATED A
The eight levels of taxonomy hierarchy (biological classification system): ✔✔Domain, Kingdom,
Phylum, Class, Order, Family, Genus, Species.
What does the domain level consist of? ✔✔Archea, Eukarya, and Eubacteria.
***Eukarya consists of: animailia, fungi, plantae, and protista.
*** Archea consists of: archeabacteria.
***Eubacteria consists of: eubacteria.
Binomial nomenclature: ✔✔Used when classifying individual species, the Latin name of the genus
and species is written in Italiacs with the genus name capitalized and the species not capitalized.
Natural selection: ✔✔Occurs when some individuals of a species are better able to survive in their
environment and reproduce than others; also known as "survival of the fittest".
Genes: ✔✔Stretches of DNA on a chromosome that provide information for an organism's
characteristics; are responsible for heredity.
Alleles: ✔✔Different forms of genes in which some contain one or more mutations.
Mutations: ✔✔Changes in the DNA that affect the way a gene functions.
Adaptation: ✔✔A process through which mutations and combinations of alleles, some individuals
of a species are better able to survive and adapt to the environment in which they live.
***Although adaptation is the end result, the process of natural selection produces it.
Two strains of yeast are placed in a hot environment. Strain A has a mutation in a gene that results
in an ability to tolerate and grow at the high temperature. Strain B does not have a mutation in the
same gene and is unable to survive as well in the hot environment. The yeast strains are allowed
to grow and reproduce for a time. After a number of generations, a sample is tested and only strain
A is found. This is an example of what? ✔✔Natural selection.
The action of natural selection is due to the presence of mutations in the DNA that are passed on
from generation to generation. (True or False) ✔✔True.
What is the function of nucleic acids? ✔✔To store and transmit hereditary information.
What is a nucleic acid? ✔✔A chain of nucleotides that consists of a pentose, a phosphate group,
and a nitrogenous base.
Pentose: ✔✔A type of sugar. In nu
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