Most animals fall into one of how many phyla?
A. 5
B. 9
C. 100
D. 35
Answer: B
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Emergent properties are
a. characteristics of nonliving matter. b. exclusive to atoms but not molecules. c. neither exclusive to molecules nor compounds. d. characteristics that depend on the level of organization of matter but do not exist at lower levels of organization. e. exclusive to multicellular organisms.
The yeast in the image below are budding into haploid cells. What molecule have they most likely begun to secrete?
a. luciferase
b. autoinducer
c. mating factor
d. tyrosine kinase
What is the technique that is used to amplify DNA sequences?
What will be an ideal response?
When ocean levels dropped about 70 million years ago, marsupial mammals moved into North America and displaced many of the placental mammal species
a. true b. false