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Question
The major function of a receptor is toa. control the autonomic functions of the body.
b. stabilize the internal environment to achieve homeostasis.
c. produce responses to the various stimuli the body receives.
d. give organisms or cells awareness of and sensitivity to their environment.
e. do none of these.
Answer
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Related questions
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Choose the one most appropriate response for each.
a. ligaments and tendons are made of this
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
f. secretes extracellular products such as sweat, mucus, tears, and saliva
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h. extracellular fluid that bathes cells and tissues
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a. stratified epithelium
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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.
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b. promotes cell elongation in stems
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d. a hollow, cylindrical organ that protects young leaves growing within it
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c. has receptor sites for a particular hormonal message
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c. yellow
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b. gibberellin.
c. cytokinin.
d. abscisic acid.
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a. auxin.
b. gibberellin.
c. cytokinin.
d. abscisic acid.
e. ethylene.
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The polar transport of auxin in a plant
a. creates an uneven distribution of the hormone.
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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Auxin concentration gradients
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c. allow formation of plant parts in expected patterns.
d. help young cells elongate so that shoots and roots lengthen.
e. are described by all of these EXCEPT "appear once germination begins."
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a. synthetic auxins.
b. abscisic acid.
c. salicylic acid.
d. citric acid.
e. nitric acid.
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a. produce growth hormones.
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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a. sporopollenin
b. cellulose
c. peptidoglycan
d. exopolysaccharides
e. none of these
Q:
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.