• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
DNA Damage Response in Plants: Conserved and Variable
DNA Damage Response in Plants: Conserved and Variable

... responses. The most important effector in animals is the p53 transcription, which functions as a tumor suppressor [61]. p53 plays a central role in the decision of a cell to either undergo cell-cycle arrest and DNA repair or apoptosis after DNA damage in animals [62]. The amount and transcriptional ...
DNA - Wise Science
DNA - Wise Science

... 2. RNA polymerase uses one strand of DNA as a template to produce a complimentary strand of RNA (Remember A-U in RNA). 3. RNA detaches from the DNA and transcription is complete. Transcription produces three types of RNA molecules: 1. Messenger RNA (mRNA) – takes the DNA message for conversion to pr ...
1 LIFE SCIENCES PAPER 1 SEPTEMBER 2008 LIFE SCIENCES
1 LIFE SCIENCES PAPER 1 SEPTEMBER 2008 LIFE SCIENCES

... beta-carotene which is needed by the body to make Vitamin A. As a result, 140 million children on high white rice diets are at risk of vitamin A deficiency. This deficiency results in 500 000 cases of blindness each year. In 1999, a Swiss geneticist and a German botanist succeeded in transferring ge ...
Nucleic Acids and Proteins
Nucleic Acids and Proteins

... 4. RNA primase adds a short length of RNA attached by base pairing to the template strand of DNA. This acts as primer, allowing DNA polymerase to bind and begin replication (required to get the process on). 5. DNA polymerase III starts replication next to the RNA primer and adds nucleotides in a 5-3 ...
Mossbourne Community Academy A
Mossbourne Community Academy A

... The table shows the types of DNA molecule that could be present in samples 1 to 3. Use your knowledge of semi-conservative replication to complete the table with a tick if the DNA molecule is present in the sample. ...
The Rock Pocket Mouse: Genes, Pathways, and Natural
The Rock Pocket Mouse: Genes, Pathways, and Natural

... living in areas where the ground is covered in a dark rock called basalt caused by geologic lava flows thousands of years ago. Scientists have collected data from a population of primarily darkcolored mice living in an area of basalt called the Pinacate lava flow in Arizona, as well as from a nearby ...
Comprehension Questions Key
Comprehension Questions Key

CHAPTER 8
CHAPTER 8

The History of Molecular Biology
The History of Molecular Biology

... Nobel laureate Erwin Shrödinger's What is Life? is one of the great science classics of the twentieth century. A distinguished physicist's exploration of the question which lies at the heart of biology, it was written for the layman, but proved one of the spurs to the birth of molecular biology and ...
19 extranuclear inheritance
19 extranuclear inheritance

PPT File
PPT File

Bacterial DNA Insert
Bacterial DNA Insert

TrwB: An F1-ATPase-like molecular motor involved in DNA transport
TrwB: An F1-ATPase-like molecular motor involved in DNA transport

... 2. Role of TrwB in DNA transport The crystallographic structure of the soluble fraction of TrwB reveals important similarities to F1 -ATPase and hexameric helicases [10]. Although the function of these proteins is different, they share a common feature: they all operate as molecular motors. In view ...
The interpretation of bioinformation
The interpretation of bioinformation

... probability is normally much less than 1 in 1 billion (1,000,000,000). However, the chance of a match with a relative is much higher. Identical twins have identical profiles. 2.12 If requested, laboratories will ‘type’ a sample for a series of additional markers. This could be with the purpose of in ...
DNA Replication: Bringing the Mountain to
DNA Replication: Bringing the Mountain to

... These constraints pose a problem for rapidly growing bacteria because the length of the cell cycle under optimal growth conditions is shorter than the time it takes for the replication forks to duplicate the entire chromosome. Under rapid growth conditions, bacteria solve this problem by initiating ...
Lab 1 Artificial Selection The purpose of a particular investigation
Lab 1 Artificial Selection The purpose of a particular investigation

... 1. If no new mutations occur, it would be most reasonable to expect bacterial growth on which of the following plates and be sure to justify your answer ____________________________________________________________________________ ______________________________________________________________________ ...
Topic 5 – Mutations and Genetic Variation PreClass Reading
Topic 5 – Mutations and Genetic Variation PreClass Reading

... o Usually an enzyme checks the new DNA strands for errors in the replication       process (but it can miss some) ­ Induced mutations o Arise from exposure to mutagenic agents (something that causes a mutation) o Eg. UV radiation, X­rays, certain chemicals ...
Lab Review - Warren County Schools
Lab Review - Warren County Schools

... 1. If no new mutations occur, it would be most reasonable to expect bacterial growth on which of the following plates and be sure to justify your answer ____________________________________________________________________________ ______________________________________________________________________ ...
Exercise 10 - DNA Fingerprinting - Lake
Exercise 10 - DNA Fingerprinting - Lake

Numerical Evidence for Nucleated Self
Numerical Evidence for Nucleated Self

... entropically, but we do not account for this. Finally, although the 48-nucleotide-long “boundary bricks” seem to be important in experiment, and are likely to be more important for structures more intricate than cubes, we have not simulated them. However, while it is certainly important to be aware ...
MENDEL MEETS CSI: Forensic Genotyping as a Method To Teach
MENDEL MEETS CSI: Forensic Genotyping as a Method To Teach

Bio-Tech - AgriLife Extension County Offices
Bio-Tech - AgriLife Extension County Offices

... Scientists have discovered that each gene carries the code for a specific, assigned function (such as whether a pea is wrinkled or smooth).Genetic engineering is the process in which a specific gene is taken from the DNA of one organism and inserted into the DNA of another, or a specific gene is rep ...
insertion mutation
insertion mutation

... How are mutations inherited? Only mutations that occur in gametes are passed onto offspring. Mutations in body cells (somatic cells) only affect the organism in which they occur and are not passed on. ...
Regulating Gene Expression
Regulating Gene Expression

Gender and epigenetics - Association for Contextual Behavioral
Gender and epigenetics - Association for Contextual Behavioral

< 1 ... 65 66 67 68 69 70 71 72 73 ... 275 >

DNA damage theory of aging

The DNA damage theory of aging proposes that aging is a consequence of unrepaired accumulation of naturally occurring DNA damages. Damage in this context is a DNA alteration that has an abnormal structure. Although both mitochondrial and nuclear DNA damage can contribute to aging, nuclear DNA is the main subject of this analysis. Nuclear DNA damage can contribute to aging either indirectly (by increasing apoptosis or cellular senescence) or directly (by increasing cell dysfunction).In humans and other mammals, DNA damage occurs frequently and DNA repair processes have evolved to compensate. In estimates made for mice, on average approximately 1,500 to 7,000 DNA lesions occur per hour in each mouse cell, or about 36,000 to 160,000 per cell per day. In any cell some DNA damage may remain despite the action of repair processes. The accumulation of unrepaired DNA damage is more prevalent in certain types of cells, particularly in non-replicating or slowly replicating cells, such as cells in the brain, skeletal and cardiac muscle.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report