What is the difference between a semi-permeable membrane (parchment paper, cellophane paper, etc.) and a differentially permeable membrane (cell membrane) ?

True or False? The earth's magnetic poles coincide with its geographic poles.

At the end of anaphase II, how many chromatids are on each side of the cell?

How does your stomach tell your brain its hungry?

Discuss two ways that all cells are alike?

Scientists have found that all living things, from bacteria to humans, rely on genetic codes to direct the functions of their cells. these genetic codes are contained in strings of nucleotides and have very similar structures.

A mutation may be passed along to human offspring through what

If an organism has 24 chromosomes in each body cell, how many chromosomes would you expect to find in the organisms sex cells?

What can be related to heat flow and movmement to molten rock within the interier of the earth

4 illnesses causes by global warming

What is not functioning properly in a person with diabetes