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exam3

QuestionAnswer
Most allergy medicines contain antihistamines that block the actions of histamine. These drugs reduce cold symptoms by directly reducing the inflammation response.
To infect a cell, HIV must bind both CD4 and a cytokine receptor.
Generally speaking, vaccinations are effective in combating future infections because they induce the production of memory cells.
The protection provided through transfer of antibodies from mother to fetus is an example of passive immunity.
Which of the following is TRUE of both T cells and B cells? All of the responses are correct.
During the inflammatory response, dilation of blood vessels is both histamine and nitric oxide.
Which of the following is NOT an autoimmune disease? HIV
Which of the following lifestyle changes would NOT boost the immune system? reducing inflammation by using a cortisol supplement
What would the result be if histamine and nitric oxide were NOT secreted during a puncture injury? Healing would be slower.
Specific immunity in the extracellular fluid is provide by mainly IgG and IgM
Which of the following is NOT a part of the lymphatic system? Pancreas
Most innate immune responses rely on pathogens being engulfed and destroyed.
Phagocytosis is a process in which a cell takes in foreign particles and destroys them.
What is the closest parallel in animal structural levels of complexity to the branches, buds, flowers, seeds, and fruits of flowering plants? digestive system, reproductive system, skeletal system
Cytokinins are plant hormones that usually affect cell: division.
How can one distinguish between annuals, biennials, and perennials? the time from seed germination to seed production
Where in the eudicot plant root would you expect to find vascular tissue? in the center
Experiments suggest that the KNOX protein is closely associated with what plant hormone during the induction of leaf primordia? gibberellic acid
In the alternation of generations of flowering plant life cycles, the gametophyte stage is most similar to what stage of termite development? fertile queen
As you experiment with microRNA, you find that you are able to disable it entirely. What do you predict would be the primary effect of this on a plant? Leaf shape would be unchanged.
Which would be least affected by the loss of guard cell function that closes stomata? a rainforest plant
A plant that you are studying has sluggish wound healing abilities as well as an inability to store significant food reserves. You would like to enhance these properties. If you could enhance the growth of a tissue to improve these properties, which tis parenchyma of the stem cortex
Which of the following are physical stimuli that influence plant responses? CO2, light, water vapor, gravity
One application of auxins is its use in the production of: fruit lacking seeds
abscisic acid is an important signal, transported from roots to the stem and leaves during times of water stress, that prevents: stomatal opening.
In roots auxins tend to ________ cell elongation, in stems they promote cell elongation. inhibit
Plant roots that are in a horizontal position grow down because: Cells on the upper side elongate more than those on the lower side.
Plants have been shown to elicit defense responses upon recognition of part of the bacterial flagella, a structure important for bacterial locomotion. The flagella is likely to be sensed by: the product of a resistance gene.
Select the reaction that is most likely to be a tropism. Plants bending away from a heat source
Gravitropism is defined as: growth in response to the force of gravity.
The main reason certain seeds germinate near the soil surface rather than deep in the soil is: they require light to germinate.
Created by: Susyam
 

 



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