Select all of the processes that cause flux of carbon out of the atmosphere:
What will be an ideal response?
photosynthesis
burning fossil fuels
ocean absorption
reforestation
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Which of the following conditions would you use to enrich purple nonsulfur bacteria from lake sediments?
A) anoxic media with a good light source B) mineral media with ammonia and oxygen in the dark C) anoxic mineral media with an organic acid and a good light source D) mineral media with nitrate and acetate in the dark
Weather and climate differ from each other because
a. the effect of weather is temporary whereas the effect of climate is not. b. weather determines the diversity of organisms in an area. c. weather is local and climate is global. d. weather determines climate. e. man can affect weather but not climate.
You are working on a team that is designing a new drug. For this drug to work, it must enter the cytoplasm of specific target cells. Which of the following would be a factor that determines whether the molecule selectively enters the target cells?
A) hydrophobicity of the drug molecule B) lack of charge on the drug molecule C) similarity of the drug molecule to other molecules transported by the target cells D) lipid composition of the target cells' plasma membrane
Round seeds (R) are dominant to wrinkled seeds (r), and yellow seeds (Y) are dominant to green seeds (y). What is the expected phenotypic ratio of a cross between an RrYy and an rryy individual?
A) 1:2:1 B) 9:3:3:1 C) 3:1 D) 1:1:1:1