Which category of organic molecule stores genetic information?
a) proteins
b) lipids
c) nucleic acids
d) carbohydrates
Ans: c) nucleic acids
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Outline the three mechanisms by which corals obtain their nutrition
What will be an ideal response?
A dihybrid cross of two contrasting pure-breeding
organisms a. produces homozygous offspring. b. must produce a phenotype different from either pure-breeding parent. c. results in the disappearance of the recessive traits in the first generation. d. takes place only in the laboratory under precisely controlled conditions. e. will result in the immediate formation of another pure-breeding variety.
Which of the following features are shared by all of the jawed fish?
A. ectothermic, smooth nonscaly skin and bony skeleton B. bony exoskeleton, gills and scales C. cartilaginous or bony endoskeleton, gills and scales D. endothermic, gills and scales
Invasive species outcompete native species because they lack predators and have high reproductive rates
Indicate whether the statement is true or false