Term
| What happens to the cell during G1 phase of the cell cycle? |
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Definition
| cell grows ND REPLENISHES ITS RESOURCES |
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Term
| What happens in the S phase of the cell cycle? |
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Definition
| cell synthesizes DNA in preparation for cell division |
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Term
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Definition
| makes other proteins and cellular components necessary forcell division |
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Term
| What are the four stages of mitosis? |
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Definition
| prophase, metaphase, anaphase,telophase |
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Term
| What shape does DNA have ? |
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Definition
| double helix- ladder with rungs that is twisted |
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Term
| What are the components of a nucleotide? |
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Definition
| five- carbon sugar, phosphate group, bases |
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Term
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Definition
| splits DNA strands apart, starting at replicaion origins |
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Term
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Definition
| binds complementary DNA nucleotides starting at 3' end of RNA primer |
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Term
| Why are proteins important to cells? |
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Definition
| proteins are used to build cell structure and are used as enzymes |
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Term
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Definition
| using different sequences of amino acids |
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Term
| What are the pieces of info in DNA called? |
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Definition
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Term
| Is DNA unzipped in protein synthesis? |
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Definition
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Term
| How many strands are used in protein synthesis? |
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Definition
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Term
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Definition
| One subunit at a time, and transcrobes (copies) the genetic information from the DNA |
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Term
| What is the different base pair in RNA that DNA does not have? |
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Definition
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Term
| What does the mRNA (messenger RNA) do in protein sythesis? |
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Definition
| Carries genetic message-leaves nucleus and travels to a ribosome to build a protein molecule |
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Term
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Definition
| formed in nucleus to get gene info, from the chromosomes |
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Term
| RNA leaves nucleus, where does it go ? |
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Definition
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Term
| What happens in the ribosome when mRNA gets there ? |
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Definition
| genetic info. will be translated by the ribosome to make protein |
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Term
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Definition
| sequence of subunits (like a chain) that tells how to build a protein |
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Term
| What is he info. on the mRNA? |
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Definition
| three subunits- Each set of three is the code for a paticular amino acid- describes which amino acids should be in the protein chain |
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Term
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Definition
| carries in the proper amino acid, one at a time |
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Term
| How are the amino acids linked together ? |
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Definition
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Term
| What is a chain of amino acids called? |
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Definition
| polypeptide --- very long- protein |
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Term
| What happens to the cell after mitosis? What is it called? |
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Definition
| Cytokinesis- two- new cells form, daughter cells- duplicate set of chromosomes |
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Term
| Describe what happens in DNA replication ? |
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Definition
DNA helicase enzyme unzipps the DNA molecule, unzipped strands become template for new DNA
----DNA polymerase enzyme- attaches bases to form complimentary strands |
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Term
| Transcription vs. Translation |
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Definition
TRanscription- construction of DNA- DNA helicase unzips double- stranded DNA
---Translation-- begins at stART codon (AUG) anticodons match up with RNA codons |
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