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Question
Proximity of capillaries to tissue cells is crucial becausea. bulk flow operates to move protein-free plasma through clefts between endothelial cells.
b. red cells have to squeeze single file through capillaries.
c. some proteins exit capillaries by endocytosis and exocytosis.
d. this is where nutrient and waste exchange occur.
e. all of these are true.
Answer
This answer is hidden. It contains 1 characters.
Related questions
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Choose the one most appropriate response for each.
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b. contains collagen and elastin; acts as a packing material that supports internal organs
c. receives, conducts, and initiates signals in response to environmental changes
d. stores fat
e. offers resistance to mechanical injury and loss of internal fluids; also a barrier against microorganisms
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g. fluid ground substance plus free cells; involved in transport, pH, and temperature stability
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a. A
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Circadian
Choose the one most appropriate answer for each. Some letters may not be used.
a. flower each successive year or after several years of vegetative growth
b. promotes cell elongation in stems
c. has receptor sites for a particular hormonal message
d. a hollow, cylindrical organ that protects young leaves growing within it
e. blue-green pigment that absorbs light energy
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b. gibberellin.
c. cytokinin.
d. abscisic acid.
e. ethylene.
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The polar transport of auxin in a plant
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b. uses active membrane transporters to move auxin in and out of cells.
c. uses membrane pumps to move hydrogen ions out of the cytoplasm into the primary cell wall.
d. activates enzymes that loosen cross-links between cellulose microfibrils.
e. does all of these.
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b. promote the transcription of an enzyme that breaks down cytokinin.
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d. help young cells elongate so that shoots and roots lengthen.
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b. abscisic acid.
c. salicylic acid.
d. citric acid.
e. nitric acid.
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b. use aerobic respiration.
c. move when conditions around it deteriorate.
d. produce its own lipids and proteins.
e. respond to dwindling supplies of nutrients and water.
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b. cellulose
c. peptidoglycan
d. exopolysaccharides
e. none of these
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Sperm nuclei are indicated by
a. A.
b. B.
c. C.
d. D.
e. E.
Q:
Meiosis is indicated by
a. A.
b. B.
c. C.
d. D.
e. E.