Telomere shortening - Study guides, Class notes & Summaries

Telomere shortening or attrition is linked to biologic aging and can be accelerated by a number of conditions associated with: - answer-inflammation and oxidative stress T/F Stress has a minor role on telomere shortening - answer-False; Stress has a major role on telomere shortening that can begin in utero by increasing early telomere damage, inflammation, and greater rate of leukocyte division T/F Childhood stress predicts telomere erosion and heightened inflammatory repsonse to psychosoc...

Bio Practice Exam 28 Questions with Verified Answers Why did DNA evolve to be the carrier of genetic information in cells as opposed to RNA? - CORRECT ANSWER the hydrogen at the 2' position in the deoxyribose of DNA makes it more stable than RNA In the mismatch repair process, enzyme complexes replace bases that were incorrectly inserted into the newly synthesized DNA strand. To function, they must be able to distinguish between the parent DNA strand and the new strand. How is this accomp...

Test Bank for Porth's Essentials of Pathophysiology 5th Edition by Tommie L Norris Test Bank for Porth's Essentials of Pathophysiology 5th edition by Tommie L Norris 1. Chapter 1 Although the basic structure of the cell plasma membrane is formed by a lipid bilayer, most of the specific membrane functions are carried out by: A) Bound and transmembrane proteins B) Complex, long carbohydrate chains C) Surface antigens and hormone receptors D) A gating system of selective ion channels Feedback: Th...

Neoplasia Part 4, UTHSC Fall 2022 D2 Pathology Resisting Cell Death or Evasion of Programmed Cell Death - Cell death by apoptosis as a protective response to several pathologic conditions that might contribute to malignancy if the cells remained viable. - Biochemical pathways leading to apoptosis - Cancer cells present mutations in the genes that regulate apoptosis What three interrelated factors are critical to the immortality of cancer cells? - Self-renewal - Evasion of senescence - Ev...

NSG 6440 Week 9 Exam Questions and Answers 2024/2025 Graded A+;South University NSG 6440 Week 9 Exam Questions and Answers 2024/2025 Graded A+;South University Question 1 (1 point) Which of the following is a primary prevention measure for a 76-year-old man newly diagnosed with a testosterone deficiency? Question 1 options: 1) Calcium supplementation 2) Testicular self-examination 3) Bone density test 4) Digital rectal examination Question 2 (1 point) Which of the following i...

True/False: Blood tests for tumor markers can make a diagnosis of cancer. Why or why not? False, only tissue can diagnose. Tumor markers are helpful to assess response to therapy or reoccurrence. What is the most important procedure in diagnosing the correct cancer and histology? tissue biopsy Explain the TNM system: T is the size and local spread of the primary tumor. N is the involvement of the regional lymph nodes. M is the extent of the metastatic involvement. 1...

Nurs 209 Midterm Exam Questions And Answers. Verified and Updated. What are the trends of the geriatric population - answerPeople are living longer and longer The population of 65+ is getting larger and larger (differentiate between 65+ and 85+) Women are living longer than men in the geriatric population The centenarian (100+) group is the fastest growing group Growing amount of 85+ living in a collective dwelling What are the trends of elderly people and their personal activites - answe...

Genetics Exam 3 Practice Test 50 Questions with Verified Answers Gene conversion results from A. Discontinuous replication B. Photoreactivation C. Mismatch repair D. Gap Repair E. C and D - CORRECT ANSWER E. C and D The picture below is two Holliday junctions in a pair of DNA molecules undergoing recombination Breakage and rejoining of the strands indicated by the arrows () and () results in crossover. A. 1 and 2 B. 2 and 3 C. 3 and 4 - CORRECT ANSWER B. 2 and 3 In eukaryoti...

Primary Aging Correct Answer Primary aging - the changes that accompany natural, normal aging Secondary Aging Correct Answer bodily changes experienced as a consequence of: i. Cumulative effects of the stress a person has experienced ii. Disuse and abuse of the body iii. Exposure to environmental hazards Disease Cellular clock theory Correct Answer focuses on events inside our body's cells to explain the aging process Diminishing telomere protection over time results in our aging ...

A4M Practice Test 37 Questions with Verified Answers 1. Identify the true statement(s) concerning the role of mitochondria in longevity, aging, and disease. a. Decreased mitochondrial function results in increased oxidative damage, caused by free radical formation combined with a decrease in antioxidant enzyme system activity. b. Maternal transmission of mitochondrial genomes is a factor in differences in longevity between male and female organisms (Drosophila model) c. Alteration of the e...