Telomere - Study guides, Class notes & Summaries

Baby Boomer cohort years correct answers How many children were born in the Baby Boom cohort? correct answers 76 million Major factors that will influence the average longevity of Baby Boomers correct answers Genes, environment, ethnicity, gender In this year the Baby Boomers began to turn 65 correct answers 2011 In this year the Baby Boomers will all have reached age 65 correct answers 2029/2030 Active life expectancy correct answers Living to a healthy old age Dependent life...

Biol 230 Exam 2 Questions and Answers Already Passed What makes cell same or different? - ️️ Different cell types have the same gene, protein makes cell different. What is central dogma (a.k.a. gene expression)? - ️️ genetic information (DNA strand) is transcribed into RNA and then translated into proteins What is exon? - ️️ RNA sequences in the primary transcript that are found in the mRNA What is intron? - ️️ 1.a non-protein coding 2.RNA sequences between exons that are...

BIOD_152_Final_Exa m Correct Answer Replication of DNA begins at a single origin of replication and then proceeds the entire length of the strand, in one direction (T/F) False What enzyme is responsible for relieving the stress associated with the twisting and untwisting of a DNA strand during replication. Topoisomerase As a replicated DNA strand elongates, what enzyme is responsible for adding nucleotides? DNA polymerase The energy required to add a nucleotide to a growing chain is s...

Free nucleotides are added at the replication fork of DNA using the enzyme DNA polymerase Which of the following is the DNA at the end of linear chromosomes? telomere In the semiconservative replication of DNA, each of the new double strands of DNA has one original strand and one newly assembled strand Nucleotide excision repair is particularly important when thymine dimers are formed from exposure to UV light The strand that is synthesized continuously in the 5' to 3' direction th...

Origin of replication Site where the replication of a DNA molecule begins on a chromosome, consisting of a specific sequence of nucleotides. Bacteria only have one, eukaryotes have many. Replication fork/bubble - A Y-shaped point that results when the two strands of a DNA double helix separate so that the DNA molecule can be replicated - Single fork in Prokaryotic cells - 100s of forks in Eukaryotic cells - Replication will proceed in both directions (form a bubble) Semiconservative replicatio...

Which structural component of a eukaryotic chromosome is the attachment point for spindle microtubules during M-phase? a. the centromere b. sister chromatids c. the origin of replication d. the telomere correct answer: a. the centromere Most body (nonreproductive) cells of humans and other multicellular eukaryotes have two sets of each chromosome. Such cells are ______ and the matching pair of chromosomes are called _________. a. diploid; homologous chromosomes b. haploid; homologo...

Cellular Theories related to aging correct answers telomeres, cross-linking, and free radicals Metabolic Theories related to aging correct answers rate of living theories, caloric restriction Genetic programming theory related to aging (aka program cell death) correct answers cells are programmed to die; appears to be the function of physiological processes, the innate ability of cells to self-destruct telomere theory correct answers there is a limit to how often cells may divide before...

Disjunction ANSWER : the separation of chromosomes during the anaphase stage of cell division Non-disjunction ANSWER : Error in meiosis in which homologous chromosomes fail to separate. Aneuploid ANSWER : Abnormal number of chromosomes. Phenotype ANSWER : An organism's physical appearance, or visible traits. Meiosis ANSWER : •Cell division that produces reproductive cells in sexually reproducing organisms •The process of cell division in gametogenesis or sporogenesis during w...

1. Epigenetic: Changes in phenotypeHeritable Not due to changes in DNA sequence DNA methylation or histone modification 2. Collective term for all different DNA molecules within a cell or organism: - Genome 3. DNA protein complex: Chromosome 4. How many DNA molecules does a male have? female have?: Male 25Female 24 5. Single ring based on carbon and nitrogen atoms C,T: Pyrimidine 6. Double ring structure A, G: Purine 7. How many bonds holds together G-C: 3 hydrogen bonds 8. How many ...

Etiology - Answer- The study of the causes, reasons and causal factors that provoke a disease Idiopathic - Answer- Cause is unknown Latrogenic - Answer- caused by unintended or unwanted medical treatment Risk Factor - Answer- a factor that may increase the likelihood of disease Pathogenesis - Answer- Evolution of disease from initial stimulus to ultimate expression of the manifestation of disease Subjective manifestations - Answer- personal feelings of abnormalities in the body ...