Krusty the clown was told that a certain itching powder, called Itch-Might is the newest thing on the market. It claims to last 50% longer than other itching powders. Krusty buys the new powder and compares it to his usually itching powder, Scratch-A-lot. then krusty designs an experiment. Group A is given the Itch-Might powder and Group B is given the Scratch-A-Lot powder. Group A reported itching for 25 minutes and group B reported itching for 35 minutes.

Which group was the control?

1.Group A

2.Group B

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

What’s the student’s scientific question

Anormal appearing couple is found to be heterozygous recessive for albinism both have the genotype aa the gene responsible for albinism is recessive to the normal pigment-producing gene what are the changes of their children being albino