Which molecule has both hydrophilic properties and would be found in plasma membranes?
A) 1
B) 5
C) 6
D) 12
E) 14
Ans: B) 5
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Recall that angiosperms are, by far, the most diverse group of plants. Which plant group is the second most diverse, having approximately 23,000 living species?
A. the lycophytes B. the ferns and horsetails C. the bryophytes D. the gymnosperms
The _____ techniqueis most effective for transcriptomics studies in non-model organisms because _____
a. DNA microarray; DNA sequences from related organisms can be used as probes. b. RNA-seq;it is less expensive c. DNA microarray; prior knowledge about the genome sequence is not required. d. RNA-seq; the probes used are smaller than those for DNA microarrays.
e. DNA microarray; fluorescence gives the best indication of gene activity.A fly's wings flap when ________
a. muscles in the wings contract and relax b. blood surges into and out of the wings c. muscles in the thorax contract and relax, changing its shape d. muscles contract against a hydrostatic skeleton
Which of the following is true concerning root
nodules? a. They may kill a plant. b. They are produced by a fungus. c. They remove nitrogen compounds from the plant. d. They convert the harmful ammonia that plant cells produce into gaseous nitrogen. e. None of these are true.