A growing root comes into contact with a chemical that inhibits the golgi bodies. Which of the following would be a probable effect of this contact?
A. The root would begin to growing in an upward direction.
B. The root would not be slick enough to move through the soil easily.
C. The root would begin to simultaneously grow in multiple directions.
D. The root would produce too much mucigel and oxygen uptake would be inhibited.
E. The root cap cells would begin to divide rapidly.
B. The root would not be slick enough to move through the soil easily.
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Temperature is perhaps the most important factor in the distribution of organisms because
A. water is more scarce in warmer environments. B. most organisms are unable to regulate their body temperature precisely. C. many organisms are able to grow faster in warmer climates. D. the metabolic optimum for endothermic animals is in temperate areas. E. wind amplifies the effect of cool temperatures.
Suppose that in studies of genes on the same chromosome you find the following recombination frequencies:Figure
13.1 In this case, it would be proper to say that a, c, and b are ____.
a. linked genes b. different alleles of the same gene c. a trisomy resulting from nondisjunction d. linked genes that are not physically possible since the recombination frequencies do not add up e. three inverted genes
The movement of water through a plant is
driven by
a. the drying power of the air. b. osmosis. c. active pumping using ATP. d. root pressure. e. a combination of more than one of these
SNP-chips are used ____
a. to sequence DNA. b. in DNA profiling c. for full genome sequencing d. in PCR e. with short tandem repeat profiling