The most common forms of color blindness result in the inability to properly perceive the colors
____________________ and ___________________Fill in the blank(s) with the appropriate word(s).
red; green
green; red
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Primary growth occurs at ____ and secondary growth occurs at ____
a. apical tissue; lateral tissue b. apical meristems; lateral meristems c. primary meristems; secondary meristems d. vascular cambium; cork cambium e. lateral cambium; apical cambium
On Easter Island in the Pacific Ocean, the population rose to 3000 people from the original population of 100. In time,
the entire island was cultivated, and eventually, the soils became so over-cultivated that crops could no longer be grown. People started dying from starvation and disease. This Easter Island population had exceeded its ____.
a. density-independent factors b. biotic potential c. logistic growth d. carrying capacity e. opportunistic life history
Which one of the following most specifically explains why plants need water to perform photosynthesis?
A) to provide the oxygen needed to make sugars B) to add a hydrogen to NADPH C) to provide electrons for the light reactions D) to add a phosphate to ATP E) to excite electrons
Suppose that a meteorite crashes into Earth and a sample of it is taken to a local research lab for analysis. Embedded several inches within the rocky structure, a microscopic cluster of dormant, spore-like structures is found
The scientists culture some of this material in a standard microbiological nutrient broth, and they are surprised to find many single-celled "organisms" moving around, growing, and reproducing in the broth. The "organisms" behave the same in both daylight and dark conditions, do not require oxygen, and thrive under a wide range of temperatures and pH levels. They stop moving, growing, and reproducing, however, when fewer nutrients are available in the medium. In this scenario, the "organisms" most closely resemble a(n) A) nonliving virus. B) autotrophic species of Eukarya. C) heterotrophic species of Eukarya. D) photosynthetic species of Bacteria. E) heterotrophic species of Archaea.