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Biology Exam 1 terms
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plasma membrane
-membrane that surround sthe cell and separates it from the outside/ selectively permeable
DNA
-genetic material of the cell/ stores instructions for making parts of the cell and new cells
genes
-instructions to make parts of cells or new cells
transcription
-copying the gene into a message molecule called RNA
-occues in nucleus
translation
-creating the protein from the gene's plan via the RNA copy
-occurs in cytoplasm
ribosomes
-workbenches that put the proteins together from the amino acids building blocks.
-translates nucleic code into protein code
cytoplasm
-all material inside plasma membrane and outside nucleus.
-filled with proteins, lipids, nucleotides
cell
-smallest units that retain all the properties of life.
proteins
-working machines
lipids
-membrane building blocks
nucleotides
-DNA building blocks
metabolic activity
- sum of all biochemical reactions that make life possible
- mostly occurs in cytoplasm
prokaryotic cells
-single celled bacteria and archaea
-have no nucleus*
2 types of cells
-prokaryotic
-eukaryotic
eukaryotic cells
-found in eukaryotes
-everything other than bacteria and archaea
-have a nucleus*
earliest cells were...
prokaryotic
DNA of eukaryotic cells
-contained within a nucleus
DNA of a prokaryotic cell
-not enclosed in a nucleus or other structure
features of eukaryotic cells
-much bigger than prokaryotic cells
-contain organelles, parts in a cell
-contain a cytoskeleton
cytoskeleton
-network of protein structures that give shape and organization to eukaryotic cells
-attached to organelles
nucleus
-largest organelle in the cell
- 3 parts
- has pores but DNA never leaves because it can't
-stores DNA
3 parts of nucleus
-nuclear envelop
-chromatin
-nucleolus
chromatin
-complex of proteins with DNA of the cell
-arranged in chromosomes
nucleolus
-where ribosomes are put together
Author
Anonymous
ID
34603
Card Set
Biology Exam 1 terms
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Biology Exam 1 terms
Updated
2010-09-14T05:22:21Z
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