Question

which of the following is an example of a polysaccharide?
glucose
sucrose
cellulose
fructose

9 multiple choice 2 points
all the things in an experiment that must be kept the same to make it a fair test are called _______________.
a. dependent variables
b. independent variables
c. controlled variables
d. a c and d
e. both c and d
f
c
b
a
e
d

10 multiple choice 2 points
which type of lipid is commonly found in animal fats and associated with an increased risk of cardiovascular diseases?
steroids
phospholipids
unsaturated fatty acids
saturated fatty acids

Explanation:

1. Polysaccharides are complex carbohydrates made of many monosaccharide units. Glucose and fructose are monosaccharides, sucrose is a disaccharide, and cellulose is a polysaccharide made of glucose units.
2. In an experiment, controlled variables are the factors that are kept the same to ensure a fair - test. Dependent variables change in response to the independent variable, and independent variables are the ones that are deliberately changed.
3. Saturated fatty acids are commonly found in animal fats and are associated with an increased risk of cardiovascular diseases. Steroids have a different structure, phospholipids are important for cell membranes, and unsaturated fatty acids are generally considered healthier.

Answer:

1. cellulose
2. C. Controlled variables
3. Saturated fatty acids