Speciation & Natural Selection
This type of speciation occurs without physical separation.
What is sympatric speciation?
The energy of motion.
What is kinetic energy?
This subatomic particle defines the atomic number.
What is the proton?
The substance that gets used up first in a chemical reaction.
What is the limiting reactant?
The process by which cells make identical copies of themselves.
What is mitosis?
Isolation caused by different mating times.
What is temporal isolation?
Stored energy due to an object's position or condition.
What is potential energy?
A measure of how strongly an atom attracts electrons in a bond.
What is electronegativity?
According to Boyle’s Law, when pressure increases, this decreases (at constant temperature).
What is volume?
If a DNA strand reads TAC-CGT-AAA, what is the corresponding mRNA sequence produced during transcription?
What is AUG-GCA-UUU?
A trait that increases fitness in a particular environment.
What is an adaptation?
A 2.0 kg object is moving at 3.0 m/s. Calculate its kinetic energy.
What is 9.0 J?
This type of bond occurs between metal and nonmetal atoms.
What is an ionic bond?
Temporary dipole-dipole interactions
What are LDF?
During this phase of meiosis, homologous chromosomes separate.
What is anaphase?
This concept explains how allele frequencies change over time due to environmental pressures.
What is natural selection?
The heat content of a system
What is enthalpy?
How many grams of water are produced when 4.00 g of hydrogen reacts completely with excess oxygen? (Use H₂ + O₂ → H₂O)
What is 36.0 g of H₂O?
A reaction should produce 25.0 g of product but only gives 18.0 g. Calculate the percent yield.
What is 72.0%?
This type of genotype will express a recessive trait.
What is homozygous recessive?
This type of natural selection favors both extreme phenotypes over the average.
What is disruptive selection?
This law states that entropy in an isolated system always increases.
What is the Second Law of Thermodynamics?
If 12.0 g of carbon reacts with 32.0 g of oxygen to form CO₂, which is the limiting reactant, and how many grams of CO₂ are produced? (C + O₂ → CO₂)
Limiting: O₂; CO₂ produced = 44.0 g
A 3.00 L gas at 2.00 atm is compressed to 1.00 L. What is the new pressure (constant temp)?
What is 6.00 atm?
A DNA sequence reads: TAC-GGA-TTC-ACA. A mutation changes it to: TAC-GAA-TTC-ACA. Identify the type of mutation
What is a point mutation (or substitution)?