MULTIPLE CHOICE

1.Which of the following reactions describes the sum of all chemical reactions that go on in living cells?

a.digestion

b.metabolism

c.absorption

d.catabolism

2.In photosynthesis, the plant uses energy from the sun, plus water and carbon dioxide, to synthesize which of the following molecules?

a.carbohydrates only

b.fats and carbohydrates only

c.protein and carbohydrates only

d.fats, proteins, and carbohydrates

3.A typical cell contains “powerhouses,” which is another name for which of the following structures?

a.DNA

b.ribosomes

c.mitochondria

d.rough endoplasmic reticulum

4.Which of these terms is specific to reactions in which simple compounds are combined into more complex molecules?

a.anabolic

b.catabolic

c.ergogenic

d.gluconeogenic

5.The site of lipid synthesis in the cell is which of these bodies?

a.nucleus

b.Golgi bodies

c.mitochondria

d.smooth endoplasmic reticulum

6.Which of the following reactions is an example of an anabolic reaction?

a.pyruvate synthesis from glucose

b.acetyl-coA synthesis from cholesterol

c.carbon dioxide synthesis from citric acid

d.cholesterol synthesis from acetyl-coA molecules

7.The formation of glycogen by the liver cell is an example of which of these reactions?

a.oxidation

b.glycolysis

c.anabolism

d.catabolism

8.Which of the following processes is an example of a catabolic reaction?

a.glucose formation from glycerol

b.urea formation from an amino acid

c.albumin formation from amino acids

d.palmitic acid formation from acetate

9.Which of the following best characterizes catabolic reactions?

a.involve release of energy

b.occur only in mitochondria

c.involve consumption of energy

d.occur only when dietary energy is inadequate

10.Which of the following is among the functions of the liver?

a.excretion of urea

b.synthesis of the final active form of vitamin D

c.production of red blood cells

d.conversion of fructose to glucose