Origin of Life
What gases were present in Earth’s early atmosphere?
Methane and ammonia
The science of naming and classifying organisms.
What is taxonomy?
What does the fossil record provide evidence for?
a. The extinction of dinosaurs
b. The gradual change of species over time
c. The migration of animals
d. The age of the Earth
What is b. The gradual change of species over time
This scientist proposed the theory of natural selection.
Who is Charles Darwin?
This molecule carries genetic information in most organisms.
What is DNA?
What did the Miller-Urey experiment demonstrate?
Organic molecules could form under early Earth conditions.
These are the three domains used to classify all life.
What are Bacteria, Archaea, and Eukarya?
What is an example of a vestigial structure?
a. Human appendix.
b. Bird wing.
c. Fish gills.
d. Whale flipper.
What is a. Human appendix
Natural selection acts on these traits.
What are inherited traits?
The shape of a DNA molecule is described as this.
What is a double helix?
What does the RNA world hypothesis suggest?
RNA was the first self-replicating molecule.
Organisms in this domain are prokaryotic and often live in extreme environments.The broadest taxonomic category.
What is Archaea?
How does embryology provide evidence for evolution?
a. By showing differences in development.
b. By showing similarities in early stages of development.
c. By showing how species diverge later in life.
d. By showing unrelated species.
What is b. By showing similarities in early stages of development.
The process by which humans breed organisms for desired traits
What is artificial selection?
This law states that alleles for different traits are passed to offspring independently of one another.These structures in the nucleus contain DNA.
What is the law of independent assortment?
What is panspermia?
a. The idea that life originated at hydrothermal vents.
b. The idea that life or organic molecules came to Earth from space.
c. The process of photosynthesis in early life.
d. The formation of fossils on early Earth.
What is b. The idea that life or organic molecules came to Earth from space.
Organisms in this kingdom are multicellular and make their own food.
What is Plantae?
What can molecular biology reveal about evolution?
a. Genetic similarities between species.
b. Differences in fossil structure.
What is A. Genetic similarities between species.
Why do individuals with advantageous traits have a higher fitness?
a. They are stronger.
b. They are more likely to survive and reproduce.
c. They avoid competition.
d. They produce fewer offspring.
What is b. They are more likely to survive and reproduce.
This tool is used to predict the possible genetic outcomes of a cross.A segment of DNA that codes for a protein is called this.
What is a Punnett square?
Which hypothesis suggests life could have originated in extreme underwater environments?
a. RNA world hypothesis
b. Hydrothermal vent hypothesis
c. Panspermia
d. Abiogenesis
What is b. Hydrothermal vent hypothesis (Correct Answer)
Organisms in this kingdom are eukaryotic, multicellular, and absorb nutrients from their surroundings.
What is Fungi?
How does antibiotic resistance demonstrate evolution?
a. By showing mutations are harmful.
b. By showing bacteria adapt to survive.
c. By showing bacteria stay the same.
d. By showing antibiotics are ineffective.
What is b. By showing bacteria adapt to survive.
What is the role of environmental pressure in natural selection?
a. It eliminates all competition.
b. It favors traits that increase survival.
c. It reduces inherited variation.
d. It stops the struggle to survive.
What is b. It favors traits that increase survival.
If a tall pea plant (Tt) is crossed with another tall plant (Tt), this is the chance the offspring will be short.
What is 25%?