According to the cell theory, which describes cells? All organisms are composed of multiple cells. All cells have the same structure and function. Cells are found in everything on Earth. All living cells come from other living cells.

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

With regard to enzymes, key is to lock as a) substrate is to activation energy eliminate b) product is to substrate. c) enzyme is to active site. d) substrate is to active site.

When does a spring tide occur? question 9 options: they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur twice a year in the spring and fall. they occur on the date of the vernal equinox each year, no matter what stage the moon is in. this is why they are called spring tides. they occur when the sun, moon, and earth are at 45-degree angles from each other. this happens once every spring. they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur all year long.