Chapter 9: T cell development
1) Describe the role of the thymus.
The thymus plays a key role in the bodys immune response. The thymus allows
the population of T- cells to grow and circulate in the body. This organ, the thymus, is
Appendages: Dorsally, the foot has been transformed into a set of flexible, usually suckered
prehensile appendages (arms or tentacles) that surround the mouth.
Funnel: The ventral region of the foot forms a tubular siphon, or funnel,
Question 1: addressing objective 7:
1.1 The immunity derived from antibodies contained in body fluids is called:
a) passive immunity
b) active immunity
c) humoral immunity
d) cell-mediated immunity
e) innate immuntiy
Test 3: objectives
December 05, 2012
1. List some of the general properties of a virus.
Viruses depend on the host cells that they infect to reproduce. When found
outside of host cells, viruses exist as a protein coat or capsid
Reoviridae: family of viruses that can affect the gastrointestinal system (such as
Rotavirus) and respiratory tract. Viruses in the family Reoviridae have genomes
consisting of segmented, double-stranded RNA (dsRNA). The name "Reoviridae"
is derived from
November 26, 2012
Unknown Gram-negative #31
Aeromonas hydrophila in the domain of Bacteria, kingdom Proteobacteria,
phylum Gammaproteobacteria, class Aeormonadales. It is as gram-negative rod bacte
Viruses and Other Acellular Agents
List some of the general properties of a virus.
They have simple, acellular organization and pattern of reproduction and consist of one or more
molecules of DNA or RNA enclosed in a coat of prote
1. Compare non-specific (innate) defenses with specific (adaptive) defenses.
a. Non-specific and specific defenses both produce resistance.
Nonspecific defenses include physical and chemical barriers, the
inflammatory response, and i
A biofilm is a complex aggregation of microorganisms growing on a solid substrate.
Biofilms are characterized by structural heterogeneity, genetic diversity, complex
community interactions, and an extracellular matrix of polymeric substances.
Molecules such as proteins and nucleic acid fragments such as DNA and RNA
differ in electrical charge, size, shape, and move at different rates in the electrical field.
One way to separate and analyze these molecules is through a method known as Agarose
September 25, 2013
Patua Syndrome (Trisomy 13)
Patau Syndrome is also known as Trisomy 13. This is a genetic disorder in which
the persons chromosome thirteen appears three times instead of twice. Sometimes in
some cases, o
Desirable properties of plasmids
Plasmids have proven extremely useful as cloning vectors, particularly when
they are modified specifically for that purpose. A bacterial plasmid that is
designed for cloning should have some or all of the following propert
1) Discuss briefly the localization of T cells once they migrate from the
Once the T cells leave the thymus, they enter the circulation as resting cells in the
Go stage of the cell c
Chapter 7: The Organization and Expression of Lymphocyte Receptor
1) Distinguish between the variable region and the constant region of an
When investigators were researching the Ig genetics and protein sequencing of
Chapter 5: Innate Immunity
1) Distinguish between innate immunity and adaptive immunity.
Innate immune system is a primitive first line of defense, whereas, adaptive
immunity is much more attuned and specific. Adaptive immunity is also slowe
Chapter 3: Receptors and Signaling: B and T-Cell Receptors
1. Define the term cellular signal and give a brief overview of how cellular
signals may be generated.
A cellular signal is when in a given circumstance, a cell is instruc
Bacterial transformation is a process used to make numerous copies of DNA, and
to make large amounts of human proteins, or to genetically modify bacterium or another
cell. There are several methods used to introduce foreign DNA material into the cells
Southern blotting was a technique discovered by Edwin Southern in 1975 while
working at the Edinburgh University in Scotland. This procedure is used in the molecular
biology laboratories to study the DNA segment of interest and to understand its position
Restriction endonucleases, also known as restriction enzymes, are usually naturally found
it bacteria. These enzymes can be used to recognize a specific base sequence in a DNA
molecule and make a cut of the DNA fragment creating a 3 OH and 5 P. The
Plasmids are one of the most important factors when studying bacteria or the
DNA. Plasmids are extra chromosomal DNA that are often circular or linear in shape and
can multiply independently from the chromosome. They can range from about the size of