3 - Hershey-Chase
... Background Viruses are composed of ________ (or _________) inside a protein coat/shell called a ______________ It was also known that viruses replicate by taking over the host cell’s ____________________________ to make more virus Used a virus which infects a bacterium is called a ________________ b ...
... Background Viruses are composed of ________ (or _________) inside a protein coat/shell called a ______________ It was also known that viruses replicate by taking over the host cell’s ____________________________ to make more virus Used a virus which infects a bacterium is called a ________________ b ...
Viruses, Jumping Genes and Other Unusual Genes
... • Up to 1% of DNA in a cell may be mitochondrial DNA • Mitochondrial DNA is circular • In plants, chloroplast DNA may make up 15% of the cell’s DNA • Also have complete systems for transcription and translation that resemble bacteria ...
... • Up to 1% of DNA in a cell may be mitochondrial DNA • Mitochondrial DNA is circular • In plants, chloroplast DNA may make up 15% of the cell’s DNA • Also have complete systems for transcription and translation that resemble bacteria ...
Viruses File - Learn District 196
... capsids are found in viruses that infect bacteria, called bacteriophages or phages. • The T-even phages that infect Escherichia coli have a 20-sided capsid head that encloses their DNA and protein tail piece that attaches the phage to the host and injects the phage DNA inside. ...
... capsids are found in viruses that infect bacteria, called bacteriophages or phages. • The T-even phages that infect Escherichia coli have a 20-sided capsid head that encloses their DNA and protein tail piece that attaches the phage to the host and injects the phage DNA inside. ...
Hepatitis - Arkansas State University
... – Mixing of viruses that infect birds, pigs, produce new strains able to jump to humans. – New antigenic type leaves population unprotected – Numerous epidemics throughout history • Flu of 1918-1919 killed 20 million – Asia watched very carefully: bird flu? ...
... – Mixing of viruses that infect birds, pigs, produce new strains able to jump to humans. – New antigenic type leaves population unprotected – Numerous epidemics throughout history • Flu of 1918-1919 killed 20 million – Asia watched very carefully: bird flu? ...
Taxonomy - bancejscience
... end result is the _________________ of the organism being identified Complete Activity 2.2 on page 102. We will also look at a few other classification keys. Homework: Text Page 101 # 1 – 7 ...
... end result is the _________________ of the organism being identified Complete Activity 2.2 on page 102. We will also look at a few other classification keys. Homework: Text Page 101 # 1 – 7 ...
Virus - Cloudfront.net
... - They only kill bacteria they do not work to kill viruses -How do they work? -They prevent the formation of the bacteria cell wall -They break the cell ...
... - They only kill bacteria they do not work to kill viruses -How do they work? -They prevent the formation of the bacteria cell wall -They break the cell ...
Lecture Outline - Biology Junction
... 3. Viral crystals become infectious when the viral particles they contain invade host cells. 4. The classification of viruses is based on a. their type of nucleic acid, including whether they are single-stranded or double-stranded; b. their size and shape; and c. the presence or absence of an outer ...
... 3. Viral crystals become infectious when the viral particles they contain invade host cells. 4. The classification of viruses is based on a. their type of nucleic acid, including whether they are single-stranded or double-stranded; b. their size and shape; and c. the presence or absence of an outer ...
Teacher
... Virion（: The basic infectious particle of a virus is known as the virion.The virion is composed of the nucleic acid genome, structural protein and in some viruses an enclosing lipid-containing envelope. Size : 20 -- 300 nm ( the most virus く 150 nm); Shape: the commonest shape ---- small spherical v ...
... Virion（: The basic infectious particle of a virus is known as the virion.The virion is composed of the nucleic acid genome, structural protein and in some viruses an enclosing lipid-containing envelope. Size : 20 -- 300 nm ( the most virus く 150 nm); Shape: the commonest shape ---- small spherical v ...
PART FIVE: QUESTIONS 21-25
... PART FOUR: QUESTIONS 16-20 Read the following article on flu and circle the best answer for each question. (0) has been done for you as an example Scientists believe they have uncovered a key reason why flu viruses tend to strike in cold weather. They found the viruses coat themselves in fatty mater ...
... PART FOUR: QUESTIONS 16-20 Read the following article on flu and circle the best answer for each question. (0) has been done for you as an example Scientists believe they have uncovered a key reason why flu viruses tend to strike in cold weather. They found the viruses coat themselves in fatty mater ...
Virus PPT
... RNA or double-strand DNA, but never both. Physical structure: viruses are found in several general shapes. – The structure of viruses has been deciphered by electron microscopy and X-ray diffraction. These techniques identify two shapes – Envelope: some viruses use lipids from the cell to form a lay ...
... RNA or double-strand DNA, but never both. Physical structure: viruses are found in several general shapes. – The structure of viruses has been deciphered by electron microscopy and X-ray diffraction. These techniques identify two shapes – Envelope: some viruses use lipids from the cell to form a lay ...
NOTES: CH 19
... the proviral DNA into RNA molecules ● The RNA molecules function both as mRNA for synthesis of viral proteins and as genomes for new virus particles released from the cell ...
... the proviral DNA into RNA molecules ● The RNA molecules function both as mRNA for synthesis of viral proteins and as genomes for new virus particles released from the cell ...
AP Biology Study Guide Key Chapter 18
... 1. The study of genetics of viruses and bacteria has done all of the following except b. illuminate the sexual reproductive cycles of viruses 2. Beijerinck concluded that the cause of tobacco mosaic disease was not a filterable toxin because d. the infectious agent reproduced and could be passed on ...
... 1. The study of genetics of viruses and bacteria has done all of the following except b. illuminate the sexual reproductive cycles of viruses 2. Beijerinck concluded that the cause of tobacco mosaic disease was not a filterable toxin because d. the infectious agent reproduced and could be passed on ...
Viruses and Bacteria
... They cannot reproduce without a host cell. The virus will inject a material into the host cell to take over all it's functions. The cell will eventually reproduce, but reproduces the virus not its original reproductions. ...
... They cannot reproduce without a host cell. The virus will inject a material into the host cell to take over all it's functions. The cell will eventually reproduce, but reproduces the virus not its original reproductions. ...
Viral Structure
... Same disease may be caused by a variety of different viruses Same virus may cause a variety of diseases Outcome of infection determined by the interaction of the virus and the host o Virus strain o Route of infection o Infectious dose o Host immune status o Host genetics o Virus cytotoxicity o Immun ...
... Same disease may be caused by a variety of different viruses Same virus may cause a variety of diseases Outcome of infection determined by the interaction of the virus and the host o Virus strain o Route of infection o Infectious dose o Host immune status o Host genetics o Virus cytotoxicity o Immun ...
Bio 139 Exam Review Outline: Exam #3
... Ch. 7 DNA structure & function: Know functions of three RNA types (messenger, ribosomal, transfer). RNA polymerase: synthesizes RNA from a DNA template. What is a codon? How many nucleotides does it take to encode one amino acid?(3) What is the “genetic code” and how is it “degenerate”? Know that so ...
... Ch. 7 DNA structure & function: Know functions of three RNA types (messenger, ribosomal, transfer). RNA polymerase: synthesizes RNA from a DNA template. What is a codon? How many nucleotides does it take to encode one amino acid?(3) What is the “genetic code” and how is it “degenerate”? Know that so ...
Foundations in Microbiology
... • The viral genome inserts into bacterial genome and becomes an inactive prophage - the cell is not lysed. • Prophage is retained and copied during normal cell division resulting in the transfer of temperate phage genome to all host cell progeny – lysogeny. • Induction can occur resulting in activat ...
... • The viral genome inserts into bacterial genome and becomes an inactive prophage - the cell is not lysed. • Prophage is retained and copied during normal cell division resulting in the transfer of temperate phage genome to all host cell progeny – lysogeny. • Induction can occur resulting in activat ...
Foundations in Microbiology
... • The viral genome inserts into bacterial genome and becomes an inactive prophage - the cell is not lysed. • Prophage is retained and copied during normal cell division resulting in the transfer of temperate phage genome to all host cell progeny – lysogeny. • Induction can occur resulting in activat ...
... • The viral genome inserts into bacterial genome and becomes an inactive prophage - the cell is not lysed. • Prophage is retained and copied during normal cell division resulting in the transfer of temperate phage genome to all host cell progeny – lysogeny. • Induction can occur resulting in activat ...
Ch 24 - Bacteria
... Chicken pox…highly contagious…often recovery is usually followed by lifelong resistance…if not all is destroyed…persist as a provirus and cause shingles ...
... Chicken pox…highly contagious…often recovery is usually followed by lifelong resistance…if not all is destroyed…persist as a provirus and cause shingles ...
Genetics Name: ____ Unit 4: Genetic Engineering Date: :_____
... 3. The restriction enzyme used above is called EcoRI. EcoRI cuts DNA everywhere the base pattern is _______________. 4. Another restriction enzyme is called HaeIII. It cuts DNA at the following base sequence: CCGG GGCC a. Show the DNA fragments that would result if HaeIII was used to cut the DNA fra ...
... 3. The restriction enzyme used above is called EcoRI. EcoRI cuts DNA everywhere the base pattern is _______________. 4. Another restriction enzyme is called HaeIII. It cuts DNA at the following base sequence: CCGG GGCC a. Show the DNA fragments that would result if HaeIII was used to cut the DNA fra ...
Viruses
... A virus is composed of genetic information (RNA or DNA) and proteins. Viruses can have different structures, but a common type is a bacteriophage, a virus that infects bacteria. It is shaped like a moon lander and has three distinct regions (Figure 1). The head contains the genetic material. Protein ...
... A virus is composed of genetic information (RNA or DNA) and proteins. Viruses can have different structures, but a common type is a bacteriophage, a virus that infects bacteria. It is shaped like a moon lander and has three distinct regions (Figure 1). The head contains the genetic material. Protein ...
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.