click below
click below
Normal Size Small Size show me how
genes/dna
Chapter 6 Study Questions
| Question | Answer |
|---|---|
| What is the full name for DNA? | deoxyribonucleic acid |
| How many pairs of chromosomes do we have? | 23 |
| Who discovered the rules of nucleotide base pairing? | Chargaff |
| Who discovered that DNA was shaped like a spiral? | Franklin |
| Who was the first to develop the double helix model for DNA? | Watson and Crick |
| What are the parts of a nucleotide? | sugar, base, and a phosphate |
| What are the 4 bases of DNA? | thymine, guanine, cytosine, and adenine |
| What does adenine bond with? | thymine |
| If 30% of the DNA was thymine, how much would be adenine? | 30 % |
| If 10% of the DNA was guanine, who much would be thymine? | 40% |
| How does the double helix help DNA perform its functions? | It allows it to coil into a small space and allows for it to split apart for replication. |
| Where are genes found? | On a chromosome |
| What is the function of t-RNA? | It brings the amino acid to the ribosome for protein production. |
| What is the process called when mRNA is produced by copying the code of DNA? | transcription |
| Where are proteins made? | In the cytoplasm by the ribosome. |
| Why does DNA make a copy of a sequence onto RNA for protein production? | DNA is too large to leave the nucleus. |
| How does 2 meters of DNA fit into the nucleus of a cell? | It is coiled tightly around proteins. |
| Which is smaller a gene or a chromosome? | A gene |
| What is a gene? | A gene is a portion of the strand of DNA that codes for a specific protein. |
| What is the name given to a sequence of 3 bases? | A codon. |
| How many amino acids could be made from a sequence of 15 bases? | 5 because it takes a sequence of 3 bases to code for an amino acid. |
| What is made in the ribosome? | proteins |
| How are genes related to the traits that we have? | Genes code for specific proteins to be made. These proteins then carry out the functions of our body and make up the traits that we possess. |
| What is the name given to a specific strand of DNA that codes for a specific protein? | a gene |
| DNA has deoxyribose as its sugar, RNA has: | ribose |
| DNA uses thymine as a base; RNA uses | uracil |
| What can a mutation produce? | the wrong protein |
| An example of a substitution mutation is: | Sickle Cell Anemia |
| What is it called when a scientist changes an organism's genes? | genetic engineering |
| Agent orange caused damage to people's DNA; agent orange is a __________________? | mutagen |
| What is it called when the wrong base is added? | substitution |
| What is it called when a base is left out? | Deletion |
| What is it called if a base is added? | insertion |
| What are the subunits that make up DNA called? | nucleotides |
| What are chromosomes made of? | protein and DNA |