While working with heat in the laboratory, which of the following should you do? a. leave a flame or operating hot plate unattended b. point a heating container away from yourself c. reach across an open flame d. heat a liquid in a closed container

Which statement about inheritance is true? o girls get most of their traits from their moms, boys get most of their traits from their dads. o male offspring will always have an x-linked genetic disease if the mom is a carrier o fathers always determine the gender of the offspring in humans. o males never have y chromosomes.

What do transitional fossils best support?

What kinds of molecules can pass through the cell membrane without any problem?