biology unit 0

Do all scientists agree on what’s living and nonliving?

No

What are some of the things that life does (aka properties of life)?

Evolve. interact with environment, have order, reproduce, grow and develop, homeostasis, evolutionary adaptations, and energy utilization.

3 domains of life

Bacteria, Archaea, Eukarya

List of the Hierarchy of life (least to greatest)

Molecule, Organelle, Cell, Tissue, Organ/Organ system, Organism, Population(evolution), Community, Ecosystem, Biosphere

Lowest level of organization that can carry out basic functions of life

Organelle

Level of organization that’s capable of evolving

Population

What does it mean for an organism to be a producer in an ecosystem?

It makes its own food/energy

4 big ideas of AP biology

Evolution, Energy and matter, Information, and System interactions

Overarching theme of biology

evolution

major driving mechanism of evolution

natural selection

the ultimate source of energy for almost all life on earth

the sun

what is the law of conservation of matter/energy

matter can’t be created/destroyed; it can only change forms

specific example of negative feedback

blood sugar regulation when your glucose levels increase, so insulin is released to lower your glucose levels back down

give an example of positive feedback

contractions in childbirth, as the baby pushes against the cervix it causes stronger and more contractions which cause the baby to push against the cervix more

what’s the difference between a hypothesis and a theory?

Hypotheses usually are relatively narrow; theories have broad explanatory power.

why is it important to have a control group in an experiment?

you compare the results of the experimental group with the control group, it allows you to isolate a variable and compare its effect

example of model organism

fruit fly, mouse, yeast, zebrafish

science benefits from a ____ approach and ____ viewpoints

Cooperative, Diverse

What two characteristics must a hypothesis have to be a good hypothesis?

must be able to test it, it must be falsifiable

What kind of energy is stored in the chemical bonds of a molecule?

potential energy

_______ requires genetic variation, involves differential reproductive success, and results in descent with modification.

natural selection