Unit 1
What is Scientific Thinking?
induction, deduction, experimental design, causal reasoning, concept formation, hypothesis testing, and so on.
What is Cell Theory?
cell theory is the historic scientific theory, now universally accepted, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells.
What are the Roles of Genes?
What is Natural Selection?
the process whereby organisms better adapted to their environment tends to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution.
What are innate behaviors?
Innate behavior is behavior that's genetically hardwired in an organism and can be performed in response to a cue without prior experience
How does photosynthesis work?
plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. This transforms the water into oxygen and carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.
How Is DNA packaged?
DNA is tightly packed up to fit in the nucleus of every cell. As shown in the animation, a DNA molecule wraps around histone proteins to form tight loops called nucleosomes.
What are Punnett squares?
The Punnett square is a square diagram that is used to predict the genotypes of a particular cross or breeding experiment.
What is Embryology?
What are physical adaptations?
There are two main types of adaptation: physical adaptations are special body parts that help a plant or animal survive in an environment, and behavioral adaptations are actions plants and animals take to survive.
What is the difference between atoms and molecules?
Atoms are single neutral particles. Molecules are neutral particles made of two or more atoms bonded together. An ion is a positively or negatively charged particle.
What is Cell division?
Cell division is the process by which a parent cell divides into two or more daughter cells. Cell division usually occurs as part of a larger cell cycle.
Who was Gregor Mendel?
Gregor Mendel was an Austrian monk who discovered the basic principles of heredity through experiments in his garden. Mendel's observations became the foundation of modern genetics and the study of heredity, and he is widely considered a pioneer in the field of genetics.
What is artificial selection?
Artificial selection is the identification by humans of desirable traits in plants and animals, and the steps taken to enhance and perpetuate those traits in future generations.
What is homeostasis?