Physical weathering caused by roots.

Nonspecific permeases are not used for a. passive transport. b. allow only one type of solute to pass through the membrane. c. allow a variety of molecules to cross the cytoplasmic membrane. d. allow only water to cross the cytoplasmic membrane.

Based on this data, which is most likely correct? A. Nobody likes to go to the beach during the fall or winter B. It is too rainy in the spring to visit the beach C. More people enjoy visiting during the warmest time of year D.

What type of muscle aids in the digestion of food? A. Smooth muscle B. Skeletal muscle C. Cardiac muscle D. Cartilage muscle

What is the correct definition of marcoevolution? A.) it is evolutionary change on a large scale often following major global changes and mass extinctions B.

Use the drop-down menus to determine which structures of the exocrine system are described below. (pancreas, salivary glands, goblet cells, or lacrimal glands) secrete mucus that protect organs (pancreas, liver, goblet cells, sweat glands) secretes

What was the purpose of the vinegar in the third trial? a. test the effect of raising pH on enzyme action b. test the effect of lowering pH on enzyme action c. serve as a control d. served no purpose

How do substances move in passive transport?

Atmosphere: is mostly made of nitrogen is weightless protects earth from harmful radiation contains water vapor is affected by events in the hydrosphere

According to this species-area curve for reptiles and amphibians on a west indian archipelago, a 50% decrease in area will change the number of species living in the remaining area by

How do organelles interact within a cell