Select six operations performed or directed by the nucleus:

1 cell reproduction

2 invasion guard

3 instructions

4 coded information

5 power plant

6 chromosomes

7 exact placement of varieties of cells

8 control center

9 waste disposal

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables

What happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.

Identify the structure in organisms that do not have kidneys that is adapted to regulate water balance