Edit: i am adding the correct answer, just took test1. what are the two basic types of vitamins? water-soluble and nutrient-soluble fat-soluble and food-soluble water-soluble and food-soluble water-soluble and fat-soluble    < this is correcr! 2. some of the essential minerals you need are calcium, iron, potassium, and sodium. true    its true! false 3. which one of the following nutrients does your body absolutely have to have to function properly? carbohydrates water    <   this is correct! protein fat 4. caffeinated beverages, such as pop and energy drinks, cause your body to be less capable of re-hydrating from a workout. true    it is true false

Suppose you calculate that elasticity of demand for cigarettes is 0.5. you can conclude that: a. demand for cigarettes is elastic b. demand for cigarettes is unitary elastic c. a 1% increase in price of cigarettes will result in a 0.5% decrease in quantity demanded d. a 1% increase in the price of cigarettes will result in a 0.5% increase in quantity demanded.

Spherocytosis is an inherited blood disease in which the erythrocytes (red blood cells) are spherical instead of biconcave. this condition is inherited in a dominant fashion, with sph- dominant to sph+. in people with spherocytosis, the spleen "reads" the spherical red blood cells as defective, and it removes them from the bloodstream, leading to anemia. the spleen in different people removes the spherical erythrocytes with different efficiencies. some people with spherical erythrocytes suffer severe anemia and some mild anemia, yet others have spleens that function so poorly there are no symptoms of anemia at all. when 2400 people with the genotype sph- sph+ were examined, it was found that 2250 had anemia of varying severity, but 150 had no symptoms. does this description of people with spherocytosis represent incomplete penetrance, variable expressivity, or both? explain your answer. (3 points)

Scientists who study the anatomy of the systems in the human body focus their studies on