Chapter 23: Q.6 (page 606)
Mitochondria most likely evolved by _____________.
a. a photosynthetic cyanobacterium
b. cytoskeletal elements
c. endosymbiosis
d. membrane proliferation
Short Answer
The correct answer is option c, that is, endosymbiosis.
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Chapter 23: Q.6 (page 606)
Mitochondria most likely evolved by _____________.
a. a photosynthetic cyanobacterium
b. cytoskeletal elements
c. endosymbiosis
d. membrane proliferation
The correct answer is option c, that is, endosymbiosis.
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Protists that have a pellicle are surrounded by ______________.
a. silica dioxide
b. calcium carbonate
c. carbohydrates
d. proteins
Which of the following statements about Paramecium sexual reproduction is false?
a. The macronuclei are derived from micronuclei.
b. Both mitosis and meiosis occur during sexual reproduction.
c. The conjugate pair swaps macronuclei.
d. Each parent produces four daughter cells.
An example of carbon fixation is________________.
a. photosynthesis
b. decomposition
c. phagocytosis
d. parasitism
Which of the following is not a way that protists contribute to the food web?
a. They fix carbon into organic molecules.
b. They occupy the apex producer niche.
c. They enter symbiotic relationships with animals.
d. They recycle nutrients back into the carbon and nitrogen cycles.
Describe two ways in which paramecium differs from the projected traits of the last eukaryotic common ancestor.
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