Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 20, Problem 15SQ
Summary Introduction
To match: The terms with the most suitable description.
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Formation of a(n______) allows some soil bacteria to survive adverse conditions. a. pilus c. endospore b. nucleoid d. plasmid
b. Preceded by DNA replication
c. Results in gamete production.
d. Spindle apparatus guides chromoson e movement
e. Process of nuclear division.
12. The identification of bacteria by serologic tests is based on the presence of specific
antigens. Which of the following bacterial components is least likely to conta in useful
antigens?
a. Ribosomes
b. Cell wall
c. Capsule
d. Flagella
13. Each of the following statements concerning the Gram stain is correct except.
a. Escherichia coli stains pink because t has a thin peptidoglycan.layer
b. Streptococcus pyogens stains blue because it has a thick peptidoglycar layer
c Mycoplasma pneumoniae is not visible in the Gram's stain because it does not have a
d. Mycobacterium tuberculosis stains blue because it has a thick lipid layer
14. An outbreak of sepsis caused by Staph loeoccus aureus has occurred in the newborn
nursery. You are called upon to investigate. According to your knowledge of the normal
flora, what is the most likely source of ne…
Viral structure can best be described as a ___.
A. tiny cell surrounded by a cell wall
B. tail sheath surrounded by tail fibers
C. clump of DNA or RNA surrounded by a protein coat
D. capsid surrounded by a protein coat
Chapter 20 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 20 - Prob. 1SQCh. 20 - Prob. 2SQCh. 20 - Prob. 3SQCh. 20 - Prob. 4SQCh. 20 - __________ do not reproduce sexually. a....Ch. 20 - Prob. 6SQCh. 20 - Adapting to Host Defenses Surface proteins called...Ch. 20 - Prob. 2DAACh. 20 - Prob. 3DAACh. 20 - Adapting to Host Defenses Surface proteins called...
Ch. 20 - Prob. 7SQCh. 20 - Bacteria that serve as decomposers are ___ . a....Ch. 20 - Prob. 9SQCh. 20 - Formation of a(n) ___ allows some soil bacteria to...Ch. 20 - Prob. 11SQCh. 20 - Prob. 12SQCh. 20 - Which of these diseases is caused by bacteria? a....Ch. 20 - Prob. 14SQCh. 20 - Prob. 15SQCh. 20 - If a cut or scrape becomes infected,...Ch. 20 - The adenoviruses that cause colds do not have a...Ch. 20 - Prob. 3CTCh. 20 - Prob. 4CT
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- Viruses ____. A. all have a round shape B. cannot have a long shape C. do not maintain any shape D. vary in shapearrow_forwardOne cell transfers a plasmid to another by_______ . a. binary fission c. conjugation b. transformation d. the lytic pathwayarrow_forwardTo be considered a virus, a virus MUST… _____be able to insert (recombine) its genes into the main chromosome (s) of the host _____only replicate inside of a host cytoplasm _____be a part of the Universal Tree of Life _____contain enzymes _____respire or fermentarrow_forward
- A plasmid is a circle of________ . a. RNA c. either RNA or DNA b. DNA d histone proteinsarrow_forwardThink about the cells that viruses infect. Pick out the correct statements below. A. The host cell has some particular thing - be it machinery, chemistry or whatever - that the virus MUST have in order to successfully reproduce. B. Viruse generally don't care what cells they infect. C. Viruses can only replicate in particular hosts and tissues. D. The host range or tissue specficity means the specific type of cells the virus infects. Example - rabies infects neural cells.arrow_forwardO t of Match the type of pathogen with the correct description. Prions Virus Protozoans Bacteria and parasitic worms Choose... Choose... Can be treated with drugs that prevent it from synthesizing proteins Misfolded version of a harmless protein that will cause host cells to produce misshapen proteins May cause damage by releasing a toxin into the bloodstream Can only replicate when it is inside of a host cell Choose... Fiarrow_forward
- In general, RNA viruses multiply in the cell __, and DNA viruses multiply in the cell __. a. nucleus, cytoplasm b. cytoplasm, nucleusc. vesicles, ribosomes d. endoplasmic reticulum, nucleoluarrow_forwardQuestion is attachedarrow_forwardViruses in the Herpesviridae family are double-stranded DNA enveloped viruses. Specifically the virus Varicella can cause chickenpox, which when in adults is called ___________. This can exist as a ____________ in the DNA of host cells. Select one: a.herpes/ Provirus b.measles/ Provirus c.Shingles / Prophage d.None of the Above e.Shingles / Provirusarrow_forward
- Some bacteria secrete a nonprotein material to cover their antigen. This allows it to go unnoticed by the immune system. That coating is called ___. the capsid the spore cilia the capsulearrow_forwardA prophage is a/an ___________stage in the cycle of ____________ .a. latent, bacterial virusesb. infective, RNA virusesc. early, poxvirusesd. late, enveloped virusesarrow_forwardBacteriophages kill their host quickly by____ . a. binary fission c. a lysogenic pathway b. a lytic pathway d. transformationarrow_forward
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