Unit 1: Intro to Biology
The study of all living things
Biology
The cells control center where DNA is found.
Nucleus
Cells spend most of their time in this stage of the cell cycle
Interphase
What is the trait that is not expressed in a heterozygous gene
Recessive
Measuring the age of fossils in years called
Absolute Dating
The basic unit of structure and function of living things
Cells
Simple cells with no nucleus
Prokaryotes
During this phase of mitosis, the chromosomes condense and the nuclear membrane disappears
Prophase
The branch of biology that studies heredity is called
Genetics
What reptiles of the Mesozoic era are the best known
Dinosaurs
The first step of the scientific method
Make an OBSERVATION
The organelle responsible for waste breakdown
Lysosome
The process in which two gametes unite
Fertilization
Which term refers to the outward or physical expression of an allele pair
Phenotype
What era are we currently living in?
Cenozoic
In the scientific method, what do you do after you formulate your hypothesis?
Experiment!
What is the plasma membrane made of?
Phospholipid Bilayer
How many chromosomes do human body cells have
46
The process of synthesizing mRNA from DNA is called
Transcription
The first eukaryotic cells likely evolved through a process called
Endosymbiosis
Maintaining a stable internal environment
Homeostasis
A long, whip-like projections that function in cell movement
Flagella
Prokaryotes divide through what process?
A permanent change in the structure of DNA
Mutation
What do scientists think life developed from?
Organic Molecules