Items 27-29 are based on an experiment on liver cells. The
liver cells were ruptured and mixed in a test tube. This uniform
mixture was the centrifuged. It produced four distinct layers of
cell contents.
27. The materials in layer 3 contained a large amount of ATP.
It probably was composed of
a. mitochondria c. cell membrane
b. nucleoli d. DNA
28. The material in layer 4 contained a composed deoxyribose,
carbon- nitrogen bases and phosphate group. This compound
probably is
a. RNA b. DNA c. ATP d. proteins
29. The materials in layer 2 were added to a solution of amino
acids. Analysis showed the presence of protein fragments. The
materials in layer 2
a. transmits hereditary characteristics
b. supply energy
c. synthesize protein
d. breakdown fats
Items 27-29 are based on an experiment on liver cells. The
liver cells were ruptured and mixed in a test tube. This uniform
mixture was the centrifuged. It produced four distinct layers of
cell contents.
27. The materials in layer 3 contained a large amount of ATP.
It probably was composed of
a. mitochondria c. cell membrane
b. nucleoli d. DNA
28. The material in layer 4 contained a composed deoxyribose,
carbon- nitrogen bases and phosphate group. This compound
probably is
a. RNA b. DNA c. ATP d. proteins
29. The materials in layer 2 were added to a solution of amino
acids. Analysis showed the presence of protein fragments. The
materials in layer 2
a. transmits hereditary characteristics
b. supply energy
c. synthesize protein
d. breakdown fats
Related textbook solutions
Related questions
Matching
| TERM or CONCEPT | Definition/Association |
| 1. microtubules | a. contain enzymes for intracellular digestion |
| 2. chloroplasts | b. are primary cellular structures (or components) where proteins are assembled |
| 3. Golgi bodies | c. package cellular secretions for export |
| 4. DNA molecules | d. extract energy stored in carbohydrates; synthesize ATP; produce water and carbon dioxide |
| 5. RNA molecules | e. synthesize subunits that will be assembled into two part ribosomes in the cytoplasm |
| 6. central vacuoles | f. translate hereditary instructions into specific proteins |
| 7. lysosomes | g. increase cell surface area; store substances |
| 8. mitochondria | h. encode hereditary information |
| 9. nucleoli | i. help distribute chromosomes to the new cells during cell division |
| 10. ribosomes | j. convert light energy to chemical energy stored in the chemical bonds of glucose or starch |
| etc | etc |
