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If adenine makes up 30% of the bases in a DNA double helix, what percent of the bases are thymine, cytosine, and guanine?
During replication, the two strands of DNA separate at a point called an origin of replication to make what?
What are the steps of DNA replication?
1. Begins at the origin of replications where the DNA strands separate
2. Each parent strand becomes a template for the complementary base pairs of the daughter strand
3. DNA polymerase covalently bonds nucleotides
4. Replication goes in both directions forming bubbles which progress until they join and you have two separate identical daughter DNA molecules
If the sequence of bases on one strand of DNA is TCGATAC, what is the sequence of bases on the complementary strand?
If DNA in a cell is radioactively tagged and the cell divides, how much of the DNA will be radioactive in the daughter cells?
What are the additional nucleotides that are added to the ends of the RNA transcript to protect the RNA called?
cap and tail
What is the process that joins the mRNA continuous coding sequence (the part that actually codes for protein) before it leaves the eukaryotic nucleus called?
What would be the sequence of bases in mRNA transcribed from the following DNA sequence: TACGCAAT
Once translation (polypeptide synthesis) starts, what is the order of the three main steps by which it elongates?
1. codon recognition
2. peptide bond formation
3. translocation of the tRNA and mRNA through the ribosome
What kind of mutation in a DNA sequence may or may not alter the amino acid in a polypeptide?
What kind of nucleic acid makes up viral genomes?
RNA or DNA, but not both. RNA in plants. RNA or DNA in animals
How is it possible for some of a host cell's genome to end up in a virus?
Lysogenic cycle combines viruses DNA with host cell when it goes back to lytic cycle to separate, some of the host DNA might stay with virus
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