Chapter 27

Question 1

cytoskeleton

Answer 1

This characteristic provides some eukaryotes with new possibilities for movement, and it permits them to engulf particles, including other cells, something that prokaryotic cells simply cannot do.

Question 2

diatoms

Answer 2

single-celled eukaryotes commonly found in lakes, soils, and the oceans, cells are mostly diploid and reproduce asexually by mitotic cell division to make more diploid cells.

Question 3

symbiont

Answer 3

an organism that lives in closely evolved association with another species.

Question 4

endosymbiosis

Answer 4

a symbiosis in which one partner lives within the other

Question 5

algae

Answer 5

photosynthetic protists

Question 6

protists

Answer 6

organisms having a nucleus but lacking other features specific to plants, animals, or fungi

Question 7

protozoa

Answer 7

heterotrophic protists

Question 8

tests

Answer 8

houses constructed exclusively of organic molecules

Question 9

coenocytic

Answer 9

contain many nuclei within one giant cell