Viruses Lecture 16 Fall 2008
... • Prophage mostly silent – One gene codes to block transcription of most other genes • Some genes may be transcribed and alter bacteria – Prophage genes code for toxins in bacteria causing diphtheria, botulism and scarlet fever – Prophage in harmless E. coli strain causes food poisoning ...
... • Prophage mostly silent – One gene codes to block transcription of most other genes • Some genes may be transcribed and alter bacteria – Prophage genes code for toxins in bacteria causing diphtheria, botulism and scarlet fever – Prophage in harmless E. coli strain causes food poisoning ...
Slide 1
... Viruses • The word virus means toxin or poison • A virus cannot live, grow, or reproduce outside of a host cell • Each virus only attaches to a specific cellThis cell is called a target cell • The protein coat of the virus acts as a “key” and can only fit certain receptor sites “lock” on specific c ...
... Viruses • The word virus means toxin or poison • A virus cannot live, grow, or reproduce outside of a host cell • Each virus only attaches to a specific cellThis cell is called a target cell • The protein coat of the virus acts as a “key” and can only fit certain receptor sites “lock” on specific c ...
Genetics - Bill Nye ANSWERS
... Hemophilia is a ‘sex-linked’ disease, because it is caused by a defective gene on an X chromosome. What organism did Barbara McClintock study? corn Transposons are jumping genes. Viruses are made up of 2 things. What are they? Protein shell (caspid) and DNA Hershey and Chase studied bacteriophage vi ...
... Hemophilia is a ‘sex-linked’ disease, because it is caused by a defective gene on an X chromosome. What organism did Barbara McClintock study? corn Transposons are jumping genes. Viruses are made up of 2 things. What are they? Protein shell (caspid) and DNA Hershey and Chase studied bacteriophage vi ...
Binary fission and viral reproduction
... cells arise from other cells’. • You should use your homework time this week to make a start on this section. • I will be collecting your booklets in again on ...
... cells arise from other cells’. • You should use your homework time this week to make a start on this section. • I will be collecting your booklets in again on ...
Reading Guide for Week 5
... put those macromolecules together to make cellular structures (for example: protein + phospholipids = cell membrane). We’ll also learn about another type of microbe, the virus, and look at how it replicates itself by taking over these macromolecular-generating processes inside our own eukaryotic cel ...
... put those macromolecules together to make cellular structures (for example: protein + phospholipids = cell membrane). We’ll also learn about another type of microbe, the virus, and look at how it replicates itself by taking over these macromolecular-generating processes inside our own eukaryotic cel ...
virus reproduced
... infected with tobacco mosaic virus. A few weeks later, nearby plants were also found to be infected with the virus. Which of the following best describes how the virus reproduced? A. The virus made its own spores. B. The virus produced seeds in the tomatoes. C. The virus used the host plant’s resour ...
... infected with tobacco mosaic virus. A few weeks later, nearby plants were also found to be infected with the virus. Which of the following best describes how the virus reproduced? A. The virus made its own spores. B. The virus produced seeds in the tomatoes. C. The virus used the host plant’s resour ...
Name
... _____10. Type of bacteria that live everywhere _____11. Type of bacteria that live in extreme environments ...
... _____10. Type of bacteria that live everywhere _____11. Type of bacteria that live in extreme environments ...
Classification of Viruses
... They are not classified as living organisms because they do not have a cellular structure. They do not have any of the structures that are found in living cells. They consist of strands of DNA or RNA surrounded by a protein coat called a capsid. What are They? Virus’s are little more than mobile gen ...
... They are not classified as living organisms because they do not have a cellular structure. They do not have any of the structures that are found in living cells. They consist of strands of DNA or RNA surrounded by a protein coat called a capsid. What are They? Virus’s are little more than mobile gen ...
Hershey and Chase`s Experiment
... A bacteriophage (or, phage) is a type of virus that only infects bacteria. They have a protein coat and a piece of DNA inside. They adhere to the surface of the bacteria and inject their DNA into the bacteria. Their DNA codes for the assembly of more phages after their DNA is incorporated into t ...
... A bacteriophage (or, phage) is a type of virus that only infects bacteria. They have a protein coat and a piece of DNA inside. They adhere to the surface of the bacteria and inject their DNA into the bacteria. Their DNA codes for the assembly of more phages after their DNA is incorporated into t ...
Class: XI Subject: Biology Topic: Biological classification
... (a) What are protozoans ? Give two examples each of free-living and parasitic forms. (b) What are slime-moulds? How are they different from true fungi ? Give one example each of cellular and acellular slime moulds. ...
... (a) What are protozoans ? Give two examples each of free-living and parasitic forms. (b) What are slime-moulds? How are they different from true fungi ? Give one example each of cellular and acellular slime moulds. ...
VIRUSES
... DNA of the host cell where it reproduces along with the cell until it enters the lytic cycle and spreads. ...
... DNA of the host cell where it reproduces along with the cell until it enters the lytic cycle and spreads. ...
Prokaryote vs. Eukaryote
... 1) Classification based on capsid • protein coat that surrounds the genetic material of a virus ...
... 1) Classification based on capsid • protein coat that surrounds the genetic material of a virus ...
Outbreak! Viruses in Our Water Assessment
... C. Can be vaccinated against D. Can be pathogenic ______ 2. Which is a common virus found in water? A. Salmonella B. E. coli C. Cryptosporidium D. Gastroenteritis ______ 3. Which is NOT step in viral reproduction? A. Coating B. Assembly C. Penetration D. Attachment ______ 4. How are bacteria differe ...
... C. Can be vaccinated against D. Can be pathogenic ______ 2. Which is a common virus found in water? A. Salmonella B. E. coli C. Cryptosporidium D. Gastroenteritis ______ 3. Which is NOT step in viral reproduction? A. Coating B. Assembly C. Penetration D. Attachment ______ 4. How are bacteria differe ...
viruses! - Science with Mrs. Schulte
... Considered to be NON-LIVING because they are not cells and cannot make or take in food. ...
... Considered to be NON-LIVING because they are not cells and cannot make or take in food. ...
LN #12 Viruses
... are NONLIVING. • Viruses are simple – DNA or RNA • Instructions to build more viruses ...
... are NONLIVING. • Viruses are simple – DNA or RNA • Instructions to build more viruses ...
Intro to Virology: March 15 2009
... 12. living organism can use its genetic information and translate it but a virus cant do it alone they need to use a living organism to translate its genetic info. 13. We don’t know where viruses came from. But we assume that they are ancient beings. There is no consensis on theyre origin. The three ...
... 12. living organism can use its genetic information and translate it but a virus cant do it alone they need to use a living organism to translate its genetic info. 13. We don’t know where viruses came from. But we assume that they are ancient beings. There is no consensis on theyre origin. The three ...
Notes 3 Microbes - harnettcountyhighschools
... __________________= viral DNA that’s integrated into the host cell’s chromosome Every ________ that originates from an infected host cell has a __________________________ The lysogenic phase can continue for many _____________ At any time the provirus can activate and enter a ______________ cycle 3) ...
... __________________= viral DNA that’s integrated into the host cell’s chromosome Every ________ that originates from an infected host cell has a __________________________ The lysogenic phase can continue for many _____________ At any time the provirus can activate and enter a ______________ cycle 3) ...
Virus Questions Worksheet - Phillips Scientific Methods
... 10. Do viruses have ribosomes like cells? ...
... 10. Do viruses have ribosomes like cells? ...
DNA virus
A DNA virus is a virus that has DNA as its genetic material and replicates using a DNA-dependent DNA polymerase. The nucleic acid is usually double-stranded DNA (dsDNA) but may also be single-stranded DNA (ssDNA). DNA viruses belong to either Group I or Group II of the Baltimore classification system for viruses. Single-stranded DNA is usually expanded to double-stranded in infected cells. Although Group VII viruses such as hepatitis B contain a DNA genome, they are not considered DNA viruses according to the Baltimore classification, but rather reverse transcribing viruses because they replicate through an RNA intermediate. Notable diseases like smallpox, herpes, and chickenpox are caused by such DNA viruses.