Chapter 1: Themes in the Study of Life

Eukaryotic

Contains membranes

Prokaryotic

DNA not separated

Theory

Broader than hypothesis, can make new hypothesis.

Genes

the units of inheritance that transmit information from parents to offspring

DNA

The substance genes are made of.

Genome

The entire “library” of genetic instructions that an organism inherits.

Negative Feedback

• What it does: Keeps things balanced by reversing changes.

• Purpose: Makes sure things like body temperature, blood sugar, or other conditions stay steady and don't go too high or too low.

Positive Feedback

• What it does: Speeds things up or increases a response until the job is done.

• Purpose: Helps your body complete tasks quickly, but it doesn't keep balance.

Three Domains of Life

Bacteria & Archaea are Prokaryotic

Eukarya is Eukaryotic

Kingdoms of Eukarya

Protista, Plantae, Fungi, and Animalia

Discovery Science

Describing natural structures and processes as accurately as possible through careful observation and analysis of data.