Hx of the Earth
What is Half Life?
the amount of time it takes for exactly half of a radioactive sample to decay (break down) into something else
Who is the Father of Genetics?
Gregor Mendel
What is the primary function of DNA in cells?
Store genetic information
vestigial structures
A structure that has lost its original function over time
Why does the atomic number of an element remain constant even when the number of neutrons changes?
Because atomic number is determined by the number of protons, which defines the element
What is the Law of Superposition?
The deeper you dig, the older the rocks are.
Why are dominant traits more likely to be expressed than recessive traits?
They are always expressed if present
What is conversion of DNA into RNA?
transcription
What is embryology?
the study of how living things develop from a fertilized egg into a fully formed organism.
An ion has 18 electrons and a +3 charge. How many protons does this ion have?
21 protons
What era is known as the Age of Reptiles?
In certain species of fish, silver scales (S) are dominate over blue scales(s). Two heterozygous fish (Ss) are crossed. What fraction of offspring will have blue scales?
25%
DNA molecule segment is : TTACGCAAG The mutated DNA segment is TTCGCAAG. This is an example of what kind of point mutation.
deletion
The study of how and why plants and animals live where they do
biogeography
atomic # - mass #
How do you calculate the number of neutrons?
What is Radiometric Dating?
Radiometric dating is a method scientists use to find the exact age of rocks or fossils by measuring the amount of radioactive "parent" atoms left inside them
How many chromosomes do humans typically have?
46
What is the role of mRNA in protein synthesis?
carrying instructions from DNA in the nucleus to ribosomes
If modern organisms share a lot of homologous structures, what inference might you make about those organisms?
they share a common ancestor
(M1 x P2 ) + (M2 x P2)
How to calculate the average atomic mass
What evidence suggests that all continents were once joined together in Pangaea?
Similar fossil records across continents
How are genes and chromosomes related?
Chromosomes are made of genes
Which kind of mutation causes the most damage?
Frame shift
The wing of a bird and the wing of a butterfly are examples of what kind of sturcture?
analogous
Which subatomic particles are responsible for almost all of an atom's mass, and where are they located?
protons and neutrons, located in the nucleus