Ageneral function of all membranes in the cell is to produce proteins, lipids, and carbohydrates for the cell. regulate which materials can cross the membrane. move the cell from one location to the other. produce energy for the cell to use in metabolic reactions.

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere

Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.