Term
| Difference between RNA & DNA |
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Definition
1. Sugar in RNA is ribose instead of deoxyribose.
2. RNA is single stranded & DNA is double stranded.
3. RNA contains uracil in place of thymine. |
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Term
| Main job of RNA molecules. |
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Definition
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Term
| What is messenger RNA's function? |
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Definition
| To carry information from DNA to other parts of the cell. |
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Term
| What is ribosomal RNA's function? |
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Definition
| Combines with proteins to form ribosomes. |
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Term
| What is transfer RNA's function? |
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Definition
| Carries amino acids to the ribosome & matches them to the coded mRNA message. |
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Term
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Definition
| Segments of DNA serve as templates to produce complete RNA molecules. |
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Term
| What is the function of RNA polymerase? |
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Definition
| Binds to DNA during transcription & separates the DNA strands. |
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Term
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Definition
Introns:Not involved for coding proteins.
Exons: Codes for proteins. |
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Term
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Definition
| Long chains of amino acids. |
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Term
| How many amino acids are typically found in a polypeptides? |
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Definition
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Term
| What is the genetic code? |
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Definition
| Three "letters" at a time so that each "word" is 3 bases long and corresponds to a single amino acid. |
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Term
| What is a codon and what does it code for? |
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Definition
A codon is a set of three consecutive mRNA bases or "letters".
A codon codes for one particular amino acid. |
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Term
| What is the roll of rRNA is translation? |
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Definition
| Amino acid assembles into polypeptides. |
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Term
| How are the codon and anticodon related? |
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Definition
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Term
| Why is the genetic code universal? |
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Definition
| Read left to right; groups of 3. |
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Term
| What does gene expression mean? |
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Definition
| The way in which DNA,RNA & protein are involved in putting genetic info into action in living cells. |
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Term
| Example of harmful & beneficial mutation. |
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Definition
Harmful-Weak immune system
Beneficial-Strong immune system |
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Term
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Definition
| Group of genes regulated together. |
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Term
| How is the lac operon regulated? |
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Definition
| It is regulated by the lac genes in E. coli. |
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Term
| How are most eukaryotic genes regulated? |
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Definition
| Transcription factors and enhancer sequences. |
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Term
| What is the function of homeobox genes? |
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Definition
| Code for transcription factors that activate other genes that are important in cell development & differentiation. |
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Term
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Definition
| Micrograph of the complete diploid set of chromosomes grouped together in pairs arranged in order of decreasing size. |
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Term
| How can you use karyotypes to identify a species? |
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Definition
| By the number of chromosomes. |
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Term
| How are sex-linked traits inherited? |
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Definition
| Through the organisms parents. |
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Term
| What does a pedigree show? |
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Definition
| Possible outcomes of traits in offspring. |
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