Why do cells have a plasma membrane?

A. to separate protein from the nucleus

B. to distinguish plants from animals

C. to define the size of the cell

D. to separate the inside of the cell from its enviroment

The molar mass of carbon is 12.011g/1.0mol what is the inverse of the molar mass of carbon?

How many hydrogen atoms are in 78.4 grams of hydrochloric acid

Calculate the mass, in kilograms, of a piece of copper that absorbed 19,550 calories of heat, which caused the temperature to rise 85 degrees Celsius. C = 0.092 cal/g degrees Celsius. Use 2 significant figures.

Describe one way to separate sugar from a sugar-and-water mixture

Alfonso is conducting an experiment to determine whether temperature affects how fast earthworms move. What are the dependent and independent variables in his experiment?

What are facts on osmosis?

If a map of temperature displayed stripes parallel to the equator with equal temperatures at equivalent distances north and south of the equator, it would mean that only blank affected temperature.

What is the term for the amount of salts in water? Evaporation Evaporation Salinity Thermocline Density

In an acid-base titration, of 20 ml of a m HCI solution with 1 m NaOH. How many ml of NaOH are needed

Which of the following is not a source of air pollution related to human activities