 | Term | Definition |
| |
DNA replicates frequently during the life of a cell. |
False |
| |
RNA splicing occurs in eukaryotic cells. |
True |
| |
Some mutations may be helpful. |
True |
| |
A deletion mutation is usually more severe than a substitution mutation. |
True |
| |
There are 5 "stop" codons. |
False |
| |
In DNA, purines can only pair with other purines. |
False |
| |
Replication occurs simultaneously at many points on a DNA molecule. |
True |
| |
Uracil is a pyrimidine. |
True |
| |
There are three "start" codons. |
False |
| |
Factors in the environment that cause mutagens are called mutations. |
True |
| |
Chase and Hershey are credited with discovering the structure of DNA. |
False |
| |
DNA is shaped like a double helix. |
True |
| |
In DNA cytosine always pairs up with guanine. |
True |
| |
DNA replication always follows mitosis. |
False |
| |
Which of the following is a nucleotide found in DNA? |
Deoxyribose + Phosphate group + Cytosine |
| |
What did Griffith observe when he injected a mixture of heat-killed, disease-causing bacteria and live harmless bacteria into mice? |
The mice died |
| |
What is protein synthesis? |
Process that takes the code from DNA to assemble amino acids |
| |
During the DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases... |
GATCCA |
| |
How many codons are needed to specify three amino acids? |
3 |
| |
Which is not a type of RNA? |
Protein RNA |
| |
Transcription occurs in the... |
Nucleus |
| |
What is produced during transcription? |
mRNA molecules |
| |
What happens during the process of translation? |
The cell uses information from messenger RNA to produce proteins |
| |
What are the noncoding regions of DNA or RNA in eukaryotic cells called? |
Introns |
| |
Which of the following describes a three-base section of mRNA that codes for an amino acid? |
Codon |
| |
Avery's experiments showed that bacteria are transformed by... |
DNA |
| |
What is the sequence of the three bases found on tRNA called? |
Anticodon |
| |
Unlike DNAm RNA contains... |
Uracil |
| |
Replication occurs in the... |
Nucleus |
| |
Protein synthesis involves the process of... |
Transcription and Translation |
| |
What are the short sequences of DNA that code for a protein and are spliced together following transcription? |
Exons |
| |
RNA contains the sugar... |
Ribose |
| |
The process in which a DNA molecule makes two exact copies of the original is called... |
Replication |
| |
During transcription, mRNA leaves the nucleus and moves to... |
Ribosome |
| |
The enzyme that makes the covalent bonds between that nucleotides of DNA is |
DNA polymerase |
| |
What type of mutation only disrupts a single codon? |
Base subsutition |
| |
Translation occurs at the... |
Ribosome |
| |
During transcription, a DNA strand that has the bases CTAGGT would produce a strand of mRNA with the bases... |
GAUCCA |
| |
The complementary anticodon for the codon GAC would be... |
CUG |
| |
The purines found in DNA include... |
Adenine and Duanine |
| |
The pyrmidines found in DNA include... |
Thymine and Cytosine |
| |
DNA contains the sugar... |
Deoxyribose |
| |
The two scientists credited with discovering the structure of DNA were... |
Watson and Crick |
| |
The two scientists who worked with radioactive bacteriophages in their experiments were... |
Chase and Hershey |
| |
Avery was able to reach his conclusion after.... |
Destroying DNA prevented transformation of harmless bacteria |
| |
In DNA the nitrogen base thymine always bonds with... |
Adenine |
| |
Which of the following is true concerning RNA? |
RNA consists of a single strand |
| |
Sickle cell disease is the result of a... |
Base subsutition |
| |
In RNA the nitrogen base uracil always pairs up with... |
Adenine |
