Chapter 1 Flashcards
What is Biology?
Scientific study of living things
Biology is derived from 2 greek words Bios and Logus, which each mean?
Bios means life and logus means science
What is the basic structural and functional unit of life?
Cells
Major difference between Prokaryotes and Eukaryotes?
Eukaryotes have a nucleus and Prokaryotes dont
What is a chromosome?
A structure that contains DNA
How are chromosomes lined up in Prokaryotes vs Eukaryotes?
Prokaryotes are lined up Circular while Eukaryotes are lined up Linear
What are Chromosomes composed of?
DNA and Proteins ( Histone for Eukaryotes and non-histone Prokaryotes)
What is DNA?
Molecule that carries genetic information for growth, development and reproduction
What is a gene?
Specific sequence of DNA that codes for a specific protein
Chromosomes are located in what organelle in a eukaryotic cell? Prokaryotic cell?
Eukaryotic cell is located in Nucleus and Prokaryotes are located in Nucleoid
What is transcription?
Synthesis of mRNA from DNA
What is translation?
Synthesis of Proteins from mRNA
What is the product of gene expression?
A new functional protein
The DNA structure is a?
Double Helix
Both strands run?
Antiparallel