Some dieticians are suggesting that a gluten-free diet symptoms of ADHD in adolescents. To determine if this has merit, a group of 100 children with ADHD are given gluten-free diets, and a group of 100 children with similar ADHD symptoms resume their normal diet. After 6 months, their symptoms are reevaluated Control group Independent variable dependent variable

The following image is of a diatom. it lives in water and gets food from photosynthesis. it is encased in a hard shell made of something similar to glass or sand . a diatom is a(n) because it has a) multi-celled organism; specialized parts. b) vertebrate; a skeleton. c) insect; an exoskeleton. d) single-called organism; only one cell.

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

Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture