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Question
The methanogenic archaeans are ____ that pull electrons from ____.a. chemoautotrophs; oxygen
b. chemoheterotrophs; carbon dioxide
c. chemoautotrophs; water
d. chemoheterotrophs; methane
e. chemoautotrophs; hydrogen gas
Answer
This answer is hidden. It contains 1 characters.
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
g. fluid ground substance plus free cells; involved in transport, pH, and temperature stability
h. extracellular fluid that bathes cells and tissues
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Which of the following is NOT found in the epidermis?
a. stratified epithelium
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a. stomach
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a. integumentary
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d. urinary
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The following questions refer to the figure above of epithelial tissues.
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a. A
b. B
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__________ is a response to changes in length of night relative to length of day.
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a. auxins
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This hormone promotes bud and seed dormancy.
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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
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c. has receptor sites for a particular hormonal message
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b. gibberellin.
c. cytokinin.
d. abscisic acid.
e. ethylene.
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c. uses membrane pumps to move hydrogen ions out of the cytoplasm into the primary cell wall.
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Auxin concentration gradients
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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
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d. exopolysaccharides
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Sperm nuclei are indicated by
a. A.
b. B.
c. C.
d. D.
e. E.
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a. A.
b. B.
c. C.
d. D.
e. E.