FL 2 Flashcards
Nondisjunction
The failure of homologous chromosomes or sister chromatids to separate normally during cell division. Usually results in an abnormal distribution of chromosomes in daughter cells.
The active site of an enzyme is primarily inactivated by changes in which level of protein structure?
Tertiary
How can one gene encode for multiple proteins?
After primary transcription of the gene to pre-mRNA spliceosomes can process the primary transcript into multiple differing mRNA strands. These different strands then lead to the formation of different proteins.
Hemizygous
Only 1 copy of the gene is present in diploid cells. Males are typically homozygous for genes on sex-linked chromosomes because they have only 1 X and 1 Y chromosome.
Mutualism
Both species benefit
Commensalism
1 species benefits while the other is not affected
parasitism
One species benefits while the other is harmed
Gram-Negative Bacteria
Turns pink-red during staining of crystal violet followed by safranin.
These cells have a thin cell wall composed of peptidoglycan and an outer membrane containing phospholipids and lipopolysaccharides.
Gram-Positive Bacteria
Turns purple during staining of crystal violet followed by safranin.
These cells have a thick cell wall composed of peptidoglycan and lipoteichoic acid
Korsakoff’s Syndrome
- Chronic memory disorder
- Caused by a deficiency of Thiamine, Vitamin B-1, which can be a result of alcohol abuse
- Symptoms include inability to learn new information, inability to remember recent events and long term memory gaps as well as confabulation, making up information to fill the gaps in their memory
Working Memory
Involved in reasoning and comprehension, a breakdown in working memory prevents the brain from processing information correctly and could lead to incorrect conclusions.
