Amphibians appeared on land about:a
543 million years ago.
b. 450 million years ago.
c. 420 million years ago.
d. 250 million years ago.
e. 65 million years ago.
C
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Cytokinesis in animal cells involves the formation of a/an:
a. oncogene b. cell plate c. cleavage furrow d. sister chromatid
Imagine that several thousand years ago, a group of bats and a group of frogs colonized an island at the same time. What can you expect of their current descendants?
A. There will be more frog species compared to bat species. B. There will be more bat species compared to frog species. C. The number of bat and frog species will be equal. D. All frog species will have become extinct on the island. E. All bat species will have become extinct on the island.
Which of the following is most true of mitochondria?
a. They produce most of the ATP derived from the breakdown of carbohydrates and fatty acid. b. They produce most of the ATP derived from the breakdown of carbohydrates. c. They produce about half of the ATP derived from the breakdown of carbohydrates. d. They produce about 10% of the ATP derived from the breakdown of carbohydrates.
Which group does the supergroup Opisthokonta exclude?
A. Fungi B. Animals C. Nucleariids D. Amoebozoans E. Choanoflagellates