for years, scientist have known that the major components of the plasma membrane were lipids and proteins. which model best describes the molecular makeup of the plasma membrane.

The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false

Match the functions to the cell types ? contraction and relaxation. conducting electrochemical signals fighting diseases carrying genetic material

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.