Membrane lipids may

a. spontaneously flip-flop from one membrane leaflet to the other.

b. move laterally within one membrane leaflet.

c. aggregate with membrane proteins to form lipid rafts.

d. be unequally distributed in the two membrane leaflets.

e. be present in varying amounts in different cellular membranes 

TLS Online TPP Program

#Question id: 9256

#Unit 9. Diversity of Life Forms

Which of the following areas of study focuses on the exchange of energy, organisms, and materials between ecosystems?

TLS Online TPP Program

#Question id: 9257

#Unit 9. Diversity of Life Forms

Which lake zone would be absent in a very shallow lake?

TLS Online TPP Program

#Question id: 9258

#Unit 9. Diversity of Life Forms

Which of the following is characteristic of most terrestrial biomes?

TLS Online TPP Program

#Question id: 9259

#Unit 9. Diversity of Life Forms

The oceans affect the biosphere in all of the following ways except

TLS Online TPP Program

#Question id: 9260

#Unit 9. Diversity of Life Forms

Suppose that the number of bird species is determined mainly by the number of vertical strata found in the environment. If so, in which of the following biomes would you find the greatest number of bird species?

TLS Online TPP Program

#Question id: 9185

#Unit 9. Diversity of Life Forms

Plants are affected by an array of pathogens. Which of the following is a plant defense against disease?