Molecules to Organism
This term describes the process by which the body keeps internal conditions stable despite changes in the environment.
What is homeostasis?
In the food web shown, these organisms make their own food using sunlight.
What are producers?
A gene for eye color has two forms: B and b.
What are these different forms called?
Alleles
Organisms with traits better suited to the environment survive and reproduce.
What evolutionary mechanism is described?
Natural Selection
The Largest part of the brain is responsible for thinking and decision-making
This type of feedback loop works to reverse a change in the body, such as lowering blood glucose when it gets too high to maintain stable internal conditions.
What is a negative feedback loop?
A decrease in predator population causes an increase in herbivores.
What will most likely happen to plant populations?
Plant populations will decrease
Two heterozygous parents (Bb × Bb) cross.
What is the probability of offspring with the recessive trait?
(Create a Punnett Square)
Allow 20 Seconds
25%
Scientists compare forelimb bones of whales, bats, and humans.
What evidence of evolution do these structures represent?
Homologous structures
This part of the brain controls balance and coordination.
What is the cerebellum
The diagram shows an enzyme binding to a substrate molecule.
If the enzyme’s shape changes due to temperature, what will most likely happen?
The reaction rate will decrease because the substrate cannot bind properly to the active site.
Energy decreases at each trophic level because organisms use energy for metabolism.
Approximately what percentage of energy transfers to the next trophic level?
About 10%
In the pedigree diagram, most affected individuals are males, while females are typically unaffected carriers.
Which inheritance pattern is most likely?
X-linked recessive
Bacteria exposed to antibiotics develop resistance over generations.
Why does this occur?
Natural selection favors resistant bacteria
The basic functional unit of the nervous system shown transmitting signals
What is a neuron?
A plant leaf is exposed to light. Carbon dioxide levels decrease while oxygen levels increase.
Which process explains this observation?
Photosynthesis
The relationship between wolves and deer shown in the graph represents this ecological interaction.
Predator-Prey (Predation)
The pedigree shows that the trait appears in every generation and affected individuals have at least one affected parent.
What inheritance pattern does this represent
Autosomal dominant
Which type of evidence compares DNA sequences between organisms to determine evolutionary relationships?
Molecular evidence
The small gap between neurons where signals pass
What is a synapse
Researchers block the electron transport chain in mitochondria.
Which cellular outcome would most likely occur?
ATP production would significantly decrease.
The movement of carbon between the atmosphere, organisms, and Earth, shown in the diagram, is called what?
What is the carbon cycle
A trait is controlled by two genes located on different chromosomes.
What genetic principle explains their independent inheritance?
Law of Independent Assortment
A long‑term drought causes one plant species to die out, while another plant species with deeper roots thrives.
This difference in survival demonstrates what relationship between environmental conditions and species traits?
What is species with advantageous traits survive and increase, while those without them decline or go extinct?
A rapid automatic response to a stimulus controlled by the nervous system.
What is a reflex