click below
click below
Normal Size Small Size show me how
Microbio Rue week 4
| Question | Answer |
|---|---|
| bacteriophage (phage) | a virus that infects bacterial cells |
| base substitution | the replacement of a single case in DNA by another base, causing a mutation; also called a point mutation |
| donor cell | a cell that gives DNA to a recipient cell during genetic recombination |
| gene | a segment of DNA (a sequence of nucleotides in DNA) encoding a functional product |
| genetic code | the mRNA codons and the amino acids they encode |
| genotype | the genetic makeup of an organism |
| mutagen | an agent in the environment that brings about mutations |
| phenotype | the external manifestations of an organism’s genotype, or genetic makeup |
| repression | the process by which a repressor protein can stop the synthesis of a protein |
| recipient cell | a cell that receives DNA from a donor cell during genetic recombination |
| Artificial selection | choosing one organism from a population to grow because of their desirable traits |
| Biotechnology | the industrial application of microorganisms, cells, or cell components to make a useful product |
| DNA probe | a short, labeled, single strand of DNA or RNA used to located its complementary strand in a quantity of DNA |
| Clone | a population of cells arising from a single parent cell |
| complimentary DNA (cDNA) | DNA made in vitro from an mRNA template |
| DNA sequencing | a process by which the nucleotide sequence of DNA is determined |
| Genetic screening | techniques for determining which genes are in a cell’s genome |
| Protoplast | a gram-positive bacterium or plant cell treated to remove the cell wall |
| recombinant DNA (rDNA) | a DNA molecule produced by combining DNA from two different sources |
| transformation | 1. The process in which genes are transferred from one bacterium to another as “naked” DNA in solution, and 2. The changing of a normal cell into a cancerous cell |
| Capsid | the protein coat of a virus that surrounds the nucleic acid |
| contact inhibition | the cessation of animal cell movement and division as a result of contact with other cells |
| envelope | an outer covering surroundin the capsid of some viruses |
| fusion | the merging of plasma membranes of two different cells, resulting in one cell containing cytoplasm from both original cells |
| lysis | 1. Destruction of a cell by the rupture of the plasma membrane, resulting in a loss of cytoplasm, and 2. In disease, gradual period of decline |
| lysogenic cycle | stages in viral development that result in the incorporation of viral DNA into host DNA |
| lysogeny | a stage in which phage DNA is incorporated into the host cell without lysis |
| lytic cycle | a mechanism of phage multiplication that results in host cell lysis |
| plaque | a mechanism of phage multiplication that results in host cell lysis |
| prophage | phage DNA inserted into the host cell’s DNA |