What does it mean to be a polar molecule

1) What is the primary difference between a food web and a food chain? A) Chains contain many food webs. B) Webs contain several food chains. C) Omnivores are found only in food webs. D) First-level carnivores are unique to food chains.

Use the drop-down menus to answer the questions about fronts and weather maps.

Which type of parasitic roundworm causes cysts? a. hookworms b. filarial worms c. trichinosis causing worms d. ascarid worms

What process do heterotrophs do for energy?

Which of the following selection pressures is responsible for the limited evolutionary changes experienced by alligators and other crocodilians? a. stabilizing selection b. directional selection c. disruptive selection d. high mutation rate

What can be inferred from the phylogenetic tree shown? A) Flagellates and Animals are more closely related than Fungi and Animals. B) Ciliates and Diplomads are more closely related than Plants and Ciliates.

The food web in a diverse ecosystem is

How many ATP equivalents are made from convention of succinyl-CoA to oxaloacetate? Assume that re-oxidation of NADH via the electron transport chain yields the equivalent of 3 ATP, and that re-oxidation of FADH2 yields 2 ATP.

A situation where friction is desirable.

You discover an organism that has scaly skin and is aquatic but returns to the land to reproduce. what else would you expect to find in this organism?