Some protists use multiple fission (cell division preceded by several nuclear divisions) as a means of reproduction. Multiple fission is also referred to as
A. budding.
B. syngamy.
C. intermediary meiosis.
D. schizogony.
E. zygotic meiosis.
Answer: D
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True or False: Vertebrates may have an external skeletal system
A. true B. false
A gene has been discovered in the genome of a eukaryote that is identical to a gene of a bacterium that the eukaryote normally engulfs and digests. This is probably due to
A. a mutation of an existing gene in the eukaryote that coindcidentally is the same as the bacterial gene. B. horizontal evolution. C. horizontal gene transfer. D. a mutation of an existing gene in the eukaryote that coindcidentally is the same as the bacterial gene and vertical evolution are correct. E. endocytosis of the bacterium by the eukaryote and insertion of bacterial DNA into the eukaryotic DNA; resulting in vertical evolution.
The majority of protists are ____
a. anaerobic b. aerobic c. autotrophic d. parasitic e. photosynthetic
Which statement concerning cell division and cancer is incorrect?
A) Apoptosis can be used to kill cancerous cells in the body. B) Normal cells are limited in how many times they can divide. C) Oncogenes protect against cancer. D) Cancerous cells can become immortal.