Biology 117 Final Exam
Are all cells produced the same size in female gametogenesis? - correct answer-yes
Are all cells produced the same size in male gametogenesis? - correct answer-yes
Are all plants eukaryotic? - correct answer-yes
Are all plants multicellular organisms? - correct answer-yes
Are all three plant tissue types found in every plant organ? - correct answer-yes - not always
in equal amounts
Are guard cells open or closed when they are turgid? - correct answer-open
Are plants monophyletic? If so, what do we consider to be their most recent common
ancestor? - correct answer-land plants are monophyletic - most recent common ancestor is
green algae
Are there any differences between adult human hemoglobin and fetal hemoglobin? - correct
answer-adult hemoglobin has lower affinity for oxygen than fetal hemoglobin
As more solute is added to a solution, does solute potential become more positive or more
negative? - correct answer-adding solute decreases water potential
B cells: secretion and response to secretion - correct answer-secrete antibodies
Cytotoxic T cells: secretion and response to secretion - correct answer-secrete perforins
Describe a flaccid state of plant cells. In which type of solution is this found? - correct
answer-found in isotonic solution
Describe a plasmolyzed state of plant cells. In which type of solution is this found? - correct
answer-found in hypertonic solution
Describe a turgid stage of plant cells. In which type of solution is this found? - correct
answer-found in hypotonic solution
Describe a typical immune response. - correct answer-macrophages try to attack virus, they
display part of antigen. t-cells come in after coming in contact w/ antigen that is presented.
CD8 activates and secrete to explode cells. proliferation help in activation of B cells which
secrete antibodies. Antibodies will be released into body to come in contact with virus.
Neutraphylls present antigen on surface.
Do gametes become gametophytes or sporophytes? - correct answer-sporophytes
, Do monocots or dicots have vascular bundles organized in a ring surrounding the outside of
the interior of the stem? - correct answer-dicots
Do spores become gametophytes or sporophytes? - correct answer-gametophytes
Does a gametophyte produce gametes or spores? - correct answer-gametes
Does a sporophyte produce gametes or spores? - correct answer-spores
Does monocots or dicots have vascular bundles organized throughout the interior of the
stem? - correct answer-monocots
During an immune response, which cells secrete interleukin 1? Which secrete interleukin 2?
- correct answer-macrophages or somatic cells secrete interleukin 1
helper t cells secrete interleukin 2
Explain adhesion - correct answer-H2O molecules can "stick" to the inner surface of their
container
Explain cohesion - correct answer-H2O molecules are "sticky" with one another
Explain surface tension - correct answer-H2O molecules of the surface are pulled down by
interactions with those molecules below
Explain the pressure-flow hypothesis (translocation) of food transport within plants - correct
answer-mechanism for movement of sucrose from source to sink
water from xylem into phloem
Explain turgor pressure in plant cells. - correct answer-pressure exerted by water inside the
cell against the cell wall
makes sure the plant stays rigid
Helper T cells: secretion and response to secretion - correct answer-secrete interleukin 2
How are T cells activated? - correct answer-only become activated when their cell surface
receptors bind an antigen that has been processed by another type of cell
when an antigen presenting cell (dendritic cell) displays an antigen on MHC protein
How can antibodies released into the humors (Body fluids) help to dispose of an antigen? -
correct answer-Antigen disposal - "humoral" adaptive immune response
1. antibodies coat virus
2. virus cannot infect cell
3. tagged virus is destroyed
How can pressure be positive or negative? - correct answer-pressure potential increases as
water enters a cell
negative pressure potential occurs when water is pulled through an open system such as a
xylem
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