• Study Resource
  • Explore Categories
    • 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
old strand - TeacherWeb
old strand - TeacherWeb

... OK so how does that RNA tell our cells what to do? So now the RNA code is in the cytoplasm. A ribosome bonds to an initiation site. The ribosome “reads” this code and figures out what amino acids to put together to make a protein. The proteins made are what influences the cells behavior. So let’s l ...
RNA - TeacherWeb
RNA - TeacherWeb

... III. There are three major classes of RNA. A. Messenger RNA (mRNA)takes a message from DNA in nucleus to ribosomes in cytoplasm. B. Ribosomal RNA (rRNA)and proteins make up ribosomes where proteins are synthesized. C. Transfer RNA (tRNA)transfers a particular amino acid to a ribosome. Make a quick ...
Obs. Logs:
Obs. Logs:

... *Has nitrogen bases: Uracil (U), Adenine (A), Guanine (G), Cytosine (C) *Adenine pairs with Uracil Guanine pairs with Cytosine *phosphate & ribose (sugar) make the side ...
Protein synthesis
Protein synthesis

... and compare and contrast DNA and RNA ...
The Molecular Basis of Heredity
The Molecular Basis of Heredity

... made of 20 different amino acids in a specific sequence. This sequence influences the shape of the protein. The shape of the protein, in turn, determines its function. When proteins are formed, special chemical molecules known as messenger RNA (mRNA) carry the genetic code information of DNA from th ...
L1 - Nucleic Acids
L1 - Nucleic Acids

... • Unlike DNA, RNA is a single strand of nucleotides (with the exception of some virus). Because of this, RNA does not need complimentary pairs for each nucleotide • RNA molecules contain regions of double-helical structure where they form loops. ...
Bellwork
Bellwork

... • You need to find the complementary base pair • Remember to color on the diagonal (as shown below)—only do half, the other half is the complementary base pair ...
History of DNA
History of DNA

... Why is deoxyribose called a pentose sugar? ...
Biochemistry 6/e
Biochemistry 6/e

... A DNA with a free end: Replication stop or double-stranded DNA breaks Many proteins involved One of the keys: RecA (AAA ATPase) ...
DNA - kehsscience.org
DNA - kehsscience.org

... Proteins are larger than nucleic acids. Enzymes are good at breaking down molecules. The S-strain is more deadly than the R-strain. ...
DNA - kehsscience.org
DNA - kehsscience.org

... Proteins are larger than nucleic acids. Enzymes are good at breaking down molecules. The S-strain is more deadly than the R-strain. ...
Nucleic Acids (DNA & RNA
Nucleic Acids (DNA & RNA

... RNA is small enough to pass through the nuclear membrane and bring the message to the Ribosome in the cytoplasm 3 differences from DNA This allows the organism to recognize that the RNA is NOT the original! ...
nucleotides - Portal UniMAP
nucleotides - Portal UniMAP

... Mixture of DNA, RNA and protein migrating through this gradient separate into discrete bands at position where their densities are equal to density of CsCl.  DNA mol. with high Guanine and Cytosine content are more dense than those with a higher proportion of adenine and thyamine.  The difference ...
Powerpoint
Powerpoint

... 1. Which of the following is a nucleotide found in DNA? – A. ribose + phosphate group + thymaine – B. ribose + phosphate group + uracil – C. deoxyribose + phosphate group + uracil – D. deoxyribose + phosphate group + cytosine 2. What types of RNA are involved in protein systhesis? There are 3. 3. Du ...
A Twisted Tale…
A Twisted Tale…

... DNA, or deoxyribonucleic acid, resides inside the nucleus of every living cell. It was discovered in 1869 but the structure remained a mystery. In 1952, using X-ray photography, Rosalind Franklin observed DNA, but could not identify the shape. A year later, Francis Crick and James Watson used her im ...
DNA and RNA - Home - Deer Creek High School
DNA and RNA - Home - Deer Creek High School

... G=C – Only explanation is that T pairs with A and C pairs with G – If a DNA sample is 20% A, what % will C be? • That’s right . . . 30% (20% A = 20% T, leaves 60% for G and C, 30% each) ...
DNA and RNA Paper Lab Answer Key 1. deoxyribose C5H10O4
DNA and RNA Paper Lab Answer Key 1. deoxyribose C5H10O4

... 4. It is important that the mRNA is single-stranded so that the tRNA's can attach to the codons. 5. The mRNA came from the nucleus (in eukaryotes), where it was transcribed from DNA. 6. Amino acids are monomers of proteins or polypeptides. 7. The computer will have corrected your sequence as you com ...
Study guide-Ch12 student version
Study guide-Ch12 student version

... 22. Comparing and Contrasting Contrast process A and process B in Figure 12–6. 23. Interpreting Graphics During which process in Figure 12–6 does a segment of a chromosome become oriented in the reverse direction? 24. Interpreting Graphics In Figure 12–6, which process is a translocation? Short Answ ...
File
File

... 4) How does Watson and Crick’s discovery of the double helix model explain the similar ratios of A/T and G/C? 5) Draw and explain the steps of DNA replication. Be sure to mention all enzymes/ proteins. Label each end of the DNA with either 5’ or 3’ to show the directions of replication 6) What cause ...
DNA
DNA

... 1. Think about it! The DNA strand can be incredibly LONG! Human DNA molecules contain up to 4,639,221,000 base pairs. That means there is about 1-2 meters of DNA in each cell. How can it be kept in such a small area? ...
Presentation
Presentation

... discovered: ...
honors biology Ch. 10 Notes DNA
honors biology Ch. 10 Notes DNA

... 10.4 Explain how the structure of DNA facilitates its replication. “It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material.” Each strand can be revealed for copying by breaking the hydrogen bonds holding ...
BI 200 - Exam #4
BI 200 - Exam #4

... be more than one correct answer, and you may use an answer more than once, but put only one answer for each. ...
DNA Replication
DNA Replication

... Exons vs. Introns  what DNA is important? • Translation: RNA to protein Reading the coded message • Mutations: How can the message go wrong? • Expression: Genes can be “on” or “off.” What signals that? ...
Molecular Genetics Quiz
Molecular Genetics Quiz

... ringed nitrogen bases. 7. Pyrimidines are ringed nitrogen bases. 8. Guanine and adenine are examples of __________. 9. Uracil, cytosine, and thymine are examples of __________. 10. Label the various parts of the DNA molecule below. ...
< 1 ... 80 81 82 83 84 85 86 87 88 ... 148 >

Helicase



Helicases are a class of enzymes vital to all living organisms. Their main function is to unpackage an organism's genes. They are motor proteins that move directionally along a nucleic acid phosphodiester backbone, separating two annealed nucleic acid strands (i.e., DNA, RNA, or RNA-DNA hybrid) using energy derived from ATP hydrolysis. There are many helicases resulting from the great variety of processes in which strand separation must be catalyzed. Approximately 1% of eukaryotic genes code for helicases. The human genome codes for 95 non-redundant helicases: 64 RNA helicases and 31 DNA helicases. Many cellular processes, such as DNA replication, transcription, translation, recombination, DNA repair, and ribosome biogenesis involve the separation of nucleic acid strands that necessitates the use of helicases.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report