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- 1. Multiple Choice
Which best summarizes the role of DNA in the production of proteins?
DNA moves to the cytoplasm to build proteins
DNA transports amino acids to the ribosomes to make proteins
DNA contains the instructions used to make proteins
DNA breaks hydrogen bonds between amino acids
- 2. Multiple Choice
A student noticed that the freshwater plant, Elodea, produced bubbles when placed in direct light. What could the student most likely conclude?
Bubbles of carbon dioxide were produced as a result of photosynthesis.
Bubbles of oxygen were produced as a result of photosynthesis.
Bubbles of carbon dioxide were produced as a result of cellular respiration
Bubbles of oxygen were produced as a a result of cellular respiration
- 3. Multiple Choice
Plant cells are able to produce their own food. This process happens in which structure?
cell wall
chloroplast
mitochondrion
vacuole
- 4. Multiple Choice
These diagrams show a variety of cells from the same organism. How can cells from the same organism have such different shapes and functions?
As each cell differentiates, the DNA changes so that each type of cell has different DNA once it reaches maturity.
Mutations in the cells' nuclei lead to new combinations of DNA, resulting in different shapes and functions in the different types of cells.
During differentiation, different parts of the DNA in each type of cell are activated, resulting in the different structure and function of the cells.
During differentiation, different types of cells produce proteins which destroy the nonactive DNA, leading to cell specialization.
- 5. Multiple Choice
Which statement best explains how sweating during exercise maintains homeostasis?
It regulates mineral concentrations in cells.
It regulates body temperature.
It maintains water balance.
It maintains sugar balance in cells.
- 6. Multiple Choice
The chemical colchicine disrupts cell division. Which cell process would most likely stop if colchicine were added to a culture of human liver cells?
mitosis
meiosis
crossing over
active transport
- 7. Multiple Choice
Which statement best explains why animals are considered heterotrophic?
They are able to produce food through the process of photosynthesis.
They are able to produce food through the process of respiration.
They are able to obtain nutrients by decomposing plant and animal tissue.
They are able to obtain nutrients by consuming other organisms or their products.
- 8. Multiple Choice
Which effect could a mutation in mRNA have on the production of proteins?
The protein produced will have a different identity.
The protein produced will have a coiled shape.
The protein produced will produce excess nitrogen.
The protein produced will produce excess water.
- 9. Multiple Choice
What carries the instructions for making amino acids in a protein?
the nitrogen base on the tRNA
the hydrogen bonding between nitrogen bases
the sequence of nitrogen bases on the mRNA
the nitrogen base bonding on the DNA molecule
- 10. Multiple Choice
How mitosis and meiosis similar?
both have two cell divisions
both require DNA replication
both produce gametes
both involve crossing over
- 11. Multiple Choice
Which word equation best represents the process of cellular respiration?
carbon dioxide + glucose --> oxygen + water
carbon dioxide + water --> glucose + oxygen
glucose + oxygen ---> carbon dioxide + water
oxygen + water ---> carbon dioxide + glucose
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