FL Bio EOC

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

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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

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Plant cells are able to produce their own food. This process happens in which structure?

• cell wall

• chloroplast

• mitochondrion

• vacuole

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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.

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What is the term used to describe the movement of alleles between populations?

• Genetic drift

• Gene flow

• Natural selection

• Mutation

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.

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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

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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.

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.

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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

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