Speciation due to genetic drift is typically a very ____ process
A. rapid
B. slow
C. convergent
D. dispersive
B
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Single-celled Paramecium live in pond water (a hypotonic environment). They have a structural feature, a contractile vacuole, which enables them to osmoregulate
If you observed them in the following solutions, at which sucrose concentration (in millimolars, mM) would you expect the contractile vacuole to be most active? A) 0.0 mM sucrose B) 0.05 mM saline C) 0.08 mM sucrose D) 1.0 mM saline
Answer the question using the accompanying figure. The fruiting body is the structure with the label ____
a. A b. B c. C d. D e. E
Which phrase best explains why some photosynthesis still occurs under green light?
a. because chlorophyll absorbs red and blue light b. because many different pigments are involved in photosynthesis c. because chlorophyll absorbs green light d. because chlorophyll is green in colour
The most reliable diagnostic tool for autism spectrum disorders is ________
A) the use of screening tests B) observation C) neuroimaging D) genetic testing