Unit 1
What is an observation?
An observation is information gathered using senses.
What is the cell?
The cell is the basic structural unit of all living organisms.
What is DNA proved to be shaped as?
A double helix.
What is a species?
A group of potentially interbreeding organisms that have the ability to produce fertile offspring
What are Behavioral Adaptions?
Behaviors or activities performed by an organism that increase its fitness
What is an inference?
An inference is an explanation for an observation.
What is the cell theory?
Cell theory is the theory that describes cells and how they operate.
What is a gene?
A gene is a section of DNA that affects a trait.
What is a fossil?
Mineral replacements, preserved remains, or traces of organisms that lived in the past
What are physical adaptions?
Anatomical features that increase an organism's fitness.
What is matter?
Matter is any substance that has mass and takes up space by having volume.
When was cell theory first put together?
1838
What is an allele?
An allele is any several forms of the code for a gene.
What is extinction?
An occurrence where a species dies out
What is Homeostasis?
A balanced and stable environment within cells and organisms
What is a scientific theory?
A scientific theory is an explanation for observable phenomena.
Which two scientists made an X-ray model of a DNA molecule?
Wilkins and Franklin.
What is probability?
A measure of the likelihood that an event will occur, often expressed as a percent
What is strata?
A set of layers of sedimentary rock within the earth
What is one way that plants maintain homeostasis?
Leaves closing their pores to reduce water loss.
What is scientific law?
A predictable pattern in natural phenomena.
What is DNA?
DNA is a molecule that carries genetic information in cells.
What is a Punnett Square?
A diagram used to show possible genotypes that can result from a cross.
What is absolute dating?
A method using radioactive decay to determine the age of fossils and rocks