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Chapter 13 PowerPoint Notes (DNA)
Chapter 13 PowerPoint Notes (DNA)

... amount of adenine in a DNA molecule is always equal to the amount of thymine & the amount of guanine is always equal to the amount of cytosine! ...
dna-structure-replication
dna-structure-replication

... through the sugar and phosphate molecules by strong chemical bonds to form the “backbone” of the new strand. The new molecule winds up into a double ...
Exam 3
Exam 3

... another. This shift alters the hydrogen bonding between bases which results in improper basepairing, allowing the tautomerized base to pair with bases other than the one it is normally paired with during DNA replication. Base analogues are compounds sufficiently similar to basepair with the correct ...
File - Hope Christian College Parent and Student Portal
File - Hope Christian College Parent and Student Portal

... restriction enzymes once cut, you end up with short sticky ended bits of DNA…which can then attach to other strands of DNA …as long as the ends have complimentary nucleotides This means that biologists can use a certain enzyme to cut the plasmid at a particular point and insert a gene of interest wh ...
Genetic Technology
Genetic Technology

... following definition and examples • Map of the thousands of genes on 46 human chromosomes that when mapped and sequenced may provide information on the treatment and cure of genetic disorders • There are approximately 35,000 to 40,000 genes on the 46 human chromosomes ...
Applied Biology DNA structure & replication
Applied Biology DNA structure & replication

... Each strand is template for a new, complementary strand to form. Base-pairing rules are followed. A-T G-C ...
COA: phiX174 DNA/BsuRI (HaeIII) Marker, 9, ready-to
COA: phiX174 DNA/BsuRI (HaeIII) Marker, 9, ready-to

... Store at room temperature or at 4°C for periods up to 6 months. For longer periods store at -20°C. ...
Chemical Carcinogenesis: Initiation, Promotion and Progression
Chemical Carcinogenesis: Initiation, Promotion and Progression

DNA ‐ The Double Helix
DNA ‐ The Double Helix

... the
sequence
of
bases
that
determine
which
protein
is
to
be
made.

The
sequence
is
like
a
code
that
we
 can
now
interpret.

The
sequence
determines
which
proteins
are
made
and
the
proteins
determine
 which
activities
will
be
performed.

And
that
is
how
the
nucleus
is
the
control
center
of
the
cell.
 ...
Vincience™ Biofunctionals
Vincience™ Biofunctionals

Kiwi DNA Extraction Activity
Kiwi DNA Extraction Activity

... The salt shields the negative phosphate ends of the DNA that allows these ends to precipitate out of a cold alcohol solution. 4. Put the measuring cup or beaker in a hot water bath (don't put the solution itself in the bath!) for 10-12 minutes. Keep the temperature of the bath consistently 55-60°C. ...
O - mustafaaltinisik.org.uk
O - mustafaaltinisik.org.uk

PHARMACOBIOTECHNOLOGY
PHARMACOBIOTECHNOLOGY

... The action of restriction enzymes Restriction enzymes, also called restriction nucleases (EcoRI in this example) , surrounds the DNA molecule at the point it seeks(sequence GAATTC). It cuts one strand of the DNA double helix at one point and the second strand at a different, complementary point (bet ...
013368718X_CH15_229-246.indd
013368718X_CH15_229-246.indd

... 18. An organism that contains one or more genes from another species is inbred. 19. Transgenic organisms can be made by inserting recombinant DNA into the genome of the host organism. 20. Examining the properties of a transgenic organism allows scientists to discover the function of the transferred ...
How many chromosomes?
How many chromosomes?

Discovering DNA: Structure and Replication
Discovering DNA: Structure and Replication

... • The structure of DNA was determined to be shaped like a double helix, with strands held together by the weak hydrogen bonds formed between the bases A-T and C-G. ...
1 - HCC Learning Web
1 - HCC Learning Web

... The DNA double helix makes one full turn at? What is the distance between two nucleotides of DNA? What is the number of base pairs in each turn of the double helix of DNA? The backbone of the DNA molecule is formed by what bonds? DNA strands are said to be antiparallel. Antiparallel means what? Did ...
DNA Flipbook Objective: You will create an informational Flipbook
DNA Flipbook Objective: You will create an informational Flipbook

... Objective: You will create an informational Flipbook explaining in words and pictures the parts of DNA, DNA replication, Transcription, and Translation. As you complete each task, place a check to keep track of your progress. Label each flip as outlined below. Directions: Each page should be titled ...
SBI4U: Molecular Genetics Unit Review
SBI4U: Molecular Genetics Unit Review

... 1. What is the difference between a nucleotide and a nucleic acid? Nucleic acids are made up of nucleotide subunits 2. What are the three components of nucleotides? Sugar (ribose or deoxyribose), phosphate, nitrogenous base (A,T,C,G) 3. What is the difference between the 5’ end of nucleic acids and ...
limited warranty
limited warranty

... µl of appropriate growth medium containing serum and antibiotics on the day before transfection. Incubate the cells at 37 °C and 5% CO2. The plate should be 60~80% confluent on the day of transfection. One hour before transfection, the serum-containing medium is replaced with 360 µl Opti-Medium (In ...
Introduction to molecular cloning
Introduction to molecular cloning

... Other Modifying Enzymes Ligases forms phosphodiester bonds to join two pieces of DNA utilizes ATP in the presence of Mg++ Kinases transfers phosphate groups from donor molecules phosphorylase Phosphatases catalyzes the removal of 5’-phosphate residues ...
CSI Web Adventure: Rookie Training
CSI Web Adventure: Rookie Training

... Go to http://forensics.rice.edu/ and click the section for “Case One: Rookie Training” to find the answers to complete this worksheet. Answer the Quick Poll question and click “Play game”. 1. Go to the “Forensic Biology” section and choose “Follow Greg” to answer these questions. A. What is DNA? Ans ...
chapter outline - McGraw Hill Higher Education
chapter outline - McGraw Hill Higher Education

... 2. Base analogs are structurally similar to normal nitrogenous bases and can be incorporated into DNA during replication, but exhibit base-pairing properties different from the bases they replace 3. Specific mispairing occurs when a mutagen is a DNA-modifying agents that changes a base’s structure a ...
BIO 304: General Genetics, Fall 2003
BIO 304: General Genetics, Fall 2003

... In this course we will examine the core concepts in molecular genetics, including DNA structure, replication and repair, gene expression, regulation of gene expression as well as topics involved in biotechnology. Upon completion of this course, you are expected to be able to: •Define and describe th ...
DNA
DNA

... • Replication of DNA is the initial step for cell division (both mitosis and meiosis) • This process creates two sister chromatids that are found in chromosomes that are held together by a common centromere ...
< 1 ... 226 227 228 229 230 231 232 233 234 ... 331 >

DNA repair



DNA repair is a collection of processes by which a cell identifies and corrects damage to the DNA molecules that encode its genome. In human cells, both normal metabolic activities and environmental factors such as UV light and radiation can cause DNA damage, resulting in as many as 1 million individual molecular lesions per cell per day. Many of these lesions cause structural damage to the DNA molecule and can alter or eliminate the cell's ability to transcribe the gene that the affected DNA encodes. Other lesions induce potentially harmful mutations in the cell's genome, which affect the survival of its daughter cells after it undergoes mitosis. As a consequence, the DNA repair process is constantly active as it responds to damage in the DNA structure. When normal repair processes fail, and when cellular apoptosis does not occur, irreparable DNA damage may occur, including double-strand breaks and DNA crosslinkages (interstrand crosslinks or ICLs).The rate of DNA repair is dependent on many factors, including the cell type, the age of the cell, and the extracellular environment. A cell that has accumulated a large amount of DNA damage, or one that no longer effectively repairs damage incurred to its DNA, can enter one of three possible states: an irreversible state of dormancy, known as senescence cell suicide, also known as apoptosis or programmed cell death unregulated cell division, which can lead to the formation of a tumor that is cancerousThe DNA repair ability of a cell is vital to the integrity of its genome and thus to the normal functionality of that organism. Many genes that were initially shown to influence life span have turned out to be involved in DNA damage repair and protection.
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