Biological Science
5th Edition
ISBN: 9780321743671
Author: Scott Freeman
Publisher: PEARSON
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Chapter 4, Problem 14TYPSS
Summary Introduction
To review:
Whether the double-stranded RNA (ribonucleic acid) as the genetic material of some virus particles will form a double helix or not.
Introduction:
The genetic material is a hereditary material present inside the nucleus of all eukaryotic cells. It contains all the information required for the development and functioning of the cells. Cells can have two kinds of genetic materials, DNA (deoxyribonucleic acid) and RNA. Both DNA and RNA are a string of
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Chapter 4 Solutions
Biological Science
Ch. 4 - What are the four nitrogenous bases found in RNA?...Ch. 4 - 2. What determines the primary structure of a DNA...Ch. 4 -
4. Which of the following rules apply to the...Ch. 4 - Prob. 3TYKCh. 4 - Prob. 5TYKCh. 4 -
6. What is responsible for the increased...Ch. 4 - Prob. 8TYUCh. 4 - Prob. 9TYUCh. 4 - Prob. 7TYUCh. 4 - Prob. 10TYU
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- An RNA molecule has the following percentages of bases: A = 27%, U = 38%, C=20%, G = 15%. (A) Is this RNA molecule single-stranded or double stranded? How can you tell? (B) What would be the percentage of each of the bases in the template strand of the DNA that contains the gene for this RNA?arrow_forwardLike DNA, RNA follows base-pairing rules. Experiment to find which RNA nucleotide on the right side of the Gizmo will successfully pair with the thymine at the top of the template strand of DNA. (NOTE: The DNA on the right side is the template strand.) Which RNA base bonded with the thymine?arrow_forwardIf a virus particle contained double-stranded B-DNA of 500,000 base pairs, A. How many complete helical turns would occur on each strand? B. How many atoms of phosphorus would be present? C. What would be the length (in Å) of the DNA before packing into the virus?arrow_forward
- DNA molecules consist of chemically linked sequences of the bases adenine, guanine, cytosine, and thymine, denoted A, G, C, and T. A sequence of three basesiscalleda codon. A base may appear more than once in a codon. a) How many different codons are there? b) The bases A and G are purines, while C and T are pyrimidines. How many codons are there whose first and third bases are purines and whose second base is a pyrimidine? c) How many codons consist of three different bases?arrow_forwardDraw a stylized diagram of double-stranded DNA. Use a pentagon for sugar, a circle for phosphate and a square for bases. Label each base A, T, C or G. Show two pairs of nucleotides connected via hydrogen bonds (use all 4 letters). Show the polarity of each strand and clearly indicate the number of hydrogen bonds in each pair of nucleotides. Draw a solid-line circle around a nucleotide. Draw a dashed-line circle around a nucleoside. Indicate a phosphodiester bond using an arrow.arrow_forwardYou have created a synthetic nucleotide, nucleotide X, which can be substituted into a DNA strand and is able to pair with C nucleotides. However, a C-X pairing is joined by a single hydrogen bond. If you were to create a DNA strand made with A, C, T and your new nucleotide X instead of G the new strand would... a) Denature at higher temperatures than a strand made with A, C, G, and T b) Expect helicase would have more difficulty separating these strands than strands made with A, C, G and T c) Denature at lower temperatures than a strand made with A, C, G, and T d) Not expect to see any differences in the physical properties of this DNA compared to DNA made with A, C, G and Tarrow_forward
- A virus has a double-stranded RNA genome that has 2400 base-pairs. Of these, 35 % are G:C base-pairs. How many uracil nucleotides would be present in this virus? Show all your calculations.arrow_forwardAssume you isolate a single stranded (+) RNA virus. When you examine the proteins in the virus, you find that it does NOT contain replicase enzymes within its capsid. Which of the following is true? This virus must have a gene that encodes replicase. This virus will not be able to enter a host cell. Its genome cannot be translated (the process of translation) by the host cell ribosomes. A DNA copy of the viral genome has to be made before viral genes are expressed. This virus must lack surface antigens.arrow_forwardBacteriophages are viruses that infect bacteria. Depending on the bacteriophage, their genome can be made of either single or double stranded DNA or RNA. The composition of genetic material found in a bacteriophage is found to be 25% A, 33% T, 24% G, and 18% C. What can you conclude about the genetic material of this virus? a. It is double-stranded DNA. b. It is single-stranded DNA. c. It is single-stranded RNA. d. It is double-stranded RNA.arrow_forward
- DNA is made of two strands that are antiparallel. If one strand runs from 3’ to 5’ direction the other one will go from 5’ to 3’ direction. During replication or transcription, whatever the process is, it will always follow the 5’ to 3’ direction using the 3’ to 5’ directed strand as the template strand. Therefore, if following is the DNA sequence 5’-CCG ATC GCA CAA-3’ Using this sequence as template after transcription no protein can be translated. Why? Presence of start codon Absence of start codon Due to mutation If you want to start the translation, what change you need in the second codon (from 5’ to 3’ direction)? Substitution of C with G No change4 Deletion of Both I & IIIarrow_forwardSort the phrases into the appropriate bins depending on which protein they describe. 1) Binds at the replication fork 2) binds after the replication fork 3) binds ahead of the replication fork 4) breaks H-bonds between bases 5) prevents H-bonds between bases 6) breaks covalent bonds in DNA backbone Helicase: Topoisomerase: Single-strand binding protein:arrow_forwardThe following is diagram of a generalized tetranucleotide. Carbons exist at corners on the shapes and phosphate groups are filled circles. A. Is this a DNA or an RNA Molecule? B. Where is the 3’ end of this tetranucleotide? C. Given that the DNA strand which served as a template for the synthesis of this tetranucleotide was composed of the bases 5’-ACAG-3’, where are the expected bases?arrow_forward
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