40. While on a trip to the beach Jackie placed sand that contained small rocks and shells into a bucket. She had a tool called a sieve, shown below. A sieve has holes that allow liquids and some solids to pass through. How could Jackie use this tool to separate the particles of her mixture?

Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human x chromosome. the patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein. they rarely live past their twenties. how likely is it for a woman to have this condition? a) women can never have this condition. b) one-fourth of the daughters of an affected man would have this condition. c) one-half of the daughters of an affected father and a carrier mother could have this condition. d) only if a woman is xxx could she have this condition.

If your blood becomes too concentrated with iona, what will happen to the red blood cells

When the cell concentrates potassium within, against the natural tendency of matter, it is performing a. passive diffusion b. facilitated diffusion c. active transport d. pinocytosis