On the basis of weight, which is most abundant in a living bacterial cell?
A.) water
B.) proteins
C.) inorganic ions
D.) macromolecules
E.) fatty acids
Ans: A.) water
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The seabirds with an ecological role similar to land-based hawks, falcons, and vultures are the:
a. gulls and terns. b. skuas and jaegers. c. avocets and sandpipers. d. curlews and turnstones. e. eiders and puffins.
Which of the following is mismatched?
a. stamen - anther b. carpel - ovary c. carpel - stigma d. petal - filament e. carpel - style
The Archaea and Bacteria are similar in that all
A. live in extreme environments. B. carry on photosynthesis. C. lack a nucleus. D. carry on aerobic respiration.
Which of the following statements is true?
(a) The mitotic spindle is largely made of intermediate filaments. (b) The contractile ring is made largely of microtubules and actin filaments. (c) The contractile ring divides the nucleus in two. (d) The mitotic spindle helps segregate the chromosomes to the two daughter cells.