70% of the calories you take in are used for physiological functions like breathing blood circulation and digestion
Fat has the most calories of all the nutrients: 9 calories per gram. In a healthy diet, about 30 percent of total daily calories should come from fat. This means eating about 50 to 80 grams of fat each day. Fat gives the body energy, too, but the body changes only about 10 percent of fat into glucose.
Answer:
a. Your dependent variable has two operational definitions.
Explanation:
In an experiment there are some types of variables that help the researcher to evaluate all hypotheses of his research. These variables are called dependent and independent. The independent variable is the one that represents the research element that can be measured and manipulated by the researcher. In the case of the above research, this variable is the type of activity the children were doing. On the other hand, the dependent variable is one that depends on the manipulation of the independent variable to present a response that can be evaluated by the researcher.
In the case of research, shown in the question above, the dependent variables will be the amount of time it will take a child to eat sweets and the amount of sweets eaten. For this reason, we can conclude that in this experiment the dependent variable has two operational definitions.
Answer:
Red blood cells have surface antigens, which allow their identification in blood groups, but not antibody. Antibodies develop when the organism comes into contact with an unknown antigen.
Explanation:
Red blood cells can be classified in groups by the existence of surface antigens on the erythrocyte membrane.
- Antigen A determines blood type A.
- Antigen B is present in blood type B.
- Type AB has both antigens.
- Group O does not have either antigen A or antigen B.
When a person comes into contact with an antigen that does not possess, he can make antibodies to that antigen, so that
:
- The immune system of a person with blood type A can make antibodies to B.
- The blood type B will make anti-A antibodies for the antigen A.
- The type O, which does not possess antigens, does not recognize A or B, and makes antibodies for them.
- The body of a person with blood type AB will not make antibodies, because it recognizes both antigens.
This means that <u>a specific blood type does or does not possess an antigen, but does not include the antibody</u>. The body's defenses are what make the antibody when it comes into contact with the antigen that it does not recognize.