Which statement about germination is false?
A) The germination of a seed represents the beginning of life.
B) Germination usually begins when a seed takes up water.
C) A hydrated seed expands, rupturing its seed coat.
D) Germination usually takes place after a period of dormancy.
Answer: A
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The common basilisk lizard will run across water on its hind legs in an erect position when startled by predators. This lizard has large feet and flaps of skin along its toes. What properties of water allow this lizard to walk on water?
A. Hydrogen bonds absorb heat when they break and release heat when they form. This helps to minimize temperature changes. B. The surface tension created by hydrogen bonds is greater than the weight of the lizard initially. C. Polar molecules are attracted to ions and polar compounds, making these compounds soluble. D. Hydrogen bonds hold water molecules together; many hydrogen bonds must be broken for water to evaporate.
For nations with relatively high wage rates,
a. the wage costs per unit of a good produced are usually relatively high. b. foreign exporters have an unfair advantage over domestic producers. c. tariffs would improve the allocation of scarce resources. d. the wage rates often reflect relatively high labor productivity.
The most basic level of organization is the ____
a. atom b. molecule c. compound d. cell e. organ
Which statement is true regarding a Barr body?
A) Barr bodies are found in the nuclei of female cells. B) Barr bodies are found in the nuclei of male cells. C) Barr bodies are found in the cytoplasm of male cells. D) Barr bodies are found in the cytoplasm of female cells. E) A Barr body is a condensed, inactive Y chromosome.