In addition to the elements found in carbohydrates, proteins contain the element nitrogen.

a. True

b. False

Which later is the suns visible surface layer

What is the process where an organism takes solar energy & converts it into chemical energy? A) photosynthesis B) active transport C) diffusion D) Digestion

Which condition did the factory act of 1819 try to eliminate from Manchester's industries?

What is one way the sun is the same as other stars

The solutions in the arms of a U-tube are separated at the bottom of the tube by a selectively permeable membrane. The membrane is permeable to sodium chloride but not to glucose. Side A is filled with a solution of 0.4 M glucose and 0.

The gas that makes up about 21 percent of the atmosphere is?

Under the microscope, a cell shows formation of centrosomes and spindle microtubules. What will happen next?

What is a measurement of the earth's history divided into time periods A) fossil record B) sedimentary rocks C) geologic time scale D) radioactive elements

The initial organisms on earth were essentially prokaryotic heterotrophs. how did they obtain their energy?

Lynx feed on rabbits, and the growth curves for these two species fluctuate together. This relationship is an example of a (n) Select one: a. S-shaped growth curve. b. J-shaped growth curve. c. irregular fluctuations. tightly linked cycle.