Middle School Science Quiz: Genes Make Proteins
20 questions · exam conditions
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Genes Make ProteinsQuestion 1 of 20

Two proteins in one organism have different shapes. Why?

Their gene base orders differ
They form in different organs
They use different ribosomes
They come from different cells
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Middle School Science Quiz

Middle School Science Quiz: Genes Make Proteins

Practice Genes Make Proteins in Middle School Science with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.

What this quiz covers

This quiz focuses on Genes Make Proteins, giving you a quick way to practice the rules, question types, and explanations that matter most for Middle School Science.

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

All questions

Question 1

Two proteins in one organism have different shapes. Why?

  1. Their gene base orders differ (correct answer)
  2. They form in different organs
  3. They use different ribosomes
  4. They come from different cells
Explanation: A protein's shape is determined by its amino acid sequence, and that sequence is set by the order of bases in its gene. Different gene base orders produce different proteins with different shapes. The tempting wrong answer is that they form in different organs, but location doesn't change the shape; the gene instructions do.

Question 2

A human insulin gene is inserted into a bacterium. What will the bacterium produce from this gene?

  1. Human DNA and ribosomes
  2. Bacterial insulin protein
  3. Human insulin protein (correct answer)
  4. Human chromosomes only
Explanation: The inserted human gene carries the instructions for making human insulin, and the bacterium uses its ribosomes to read those instructions and assemble the human insulin protein. The most tempting wrong choice is bacterial insulin protein, but the gene is human, not bacterial, so the product matches the inserted gene.

Question 3

What do the instructions in a gene directly specify?

  1. Order of amino acids (correct answer)
  2. Final shape of protein
  3. Cell type making protein
  4. Number of ribosomes
Explanation: Gene instructions code for the sequence, or order, of amino acids in a polypeptide. That order then determines how the protein folds into its final shape. You might think the gene specifies final shape, but that shape isn't directly encoded; it follows from the amino acid order and the cell's folding environment.

Question 4

A gene mutation changes one amino acid in a protein. What can change next?

  1. All proteins in the cell
  2. Number of cell chromosomes
  3. Total DNA amount in cells
  4. Trait the protein controls (correct answer)
Explanation: A change in one amino acid can alter how that protein works, and the trait that protein controls can change as a result. The tempting wrong answer is that all proteins in the cell change, but only the protein with the mutated gene is affected, not every protein in the cell.

Question 5

Which part of DNA carries the code for making a protein?

  1. Sugar-phosphate backbone
  2. Sequence of bases in DNA (correct answer)
  3. Number of base pairs in DNA
  4. Location of genes on DNA
Explanation: The sequence of bases (A, T, C, G) along DNA determines the order of amino acids in a protein, so that sequence is the code. A tempting mistake is the sugar-phosphate backbone, but it is the same repeating support in every DNA strand and carries no variable instructions.

Question 6

A student draws a model: Gene card > Protein. The arrow is labeled instructions, and the student writes: "Genes provide instructions for proteins." Which statement describes how genes relate to proteins in this model?

  1. Proteins store the instructions that make genes.
  2. Genes are instructions that are used to make proteins. (correct answer)
  3. Genes and proteins are the same thing, just with different names.
  4. Proteins are made randomly, so genes do not affect which proteins are produced.
Explanation: The core skill is understanding that genes provide the instructions for making proteins in living organisms. Genes are segments of DNA that carry the coded instructions needed to build specific proteins. Models often depict this as an arrow from a gene to a protein, labeled with terms like 'instructions' to show the direction of information transfer, as seen in the student's model where the gene card points to the protein. To check your understanding, examine the model and confirm that the arrow and label indicate genes directing protein production, matching choice B. A common misconception is that proteins store instructions for genes, but actually, it's the genes that provide the blueprint for proteins. Proteins are essential molecules that perform a wide variety of functions in cells, such as catalyzing reactions and providing structure. Ultimately, the proteins produced based on genetic instructions enable cells to carry out their necessary activities for the organism's survival and function.

Question 7

A model is shown in a diagram:

Gene (instructions) > Protein (product) Arrow label: "instruction flow" Caption: "Genes provide instructions for proteins."

Which claim about genes and proteins is supported by the model?

  1. Proteins store genes inside them like a container.
  2. Genes provide instructions that lead to making proteins. (correct answer)
  3. Proteins are made first and then turned into genes.
  4. Genes are only about appearance, so they cannot affect proteins that work inside the body.
Explanation: The core skill is understanding that genes provide the instructions for making proteins in living organisms. Genes are segments of DNA that carry the coded instructions needed to build specific proteins. Models often depict this as an arrow from 'gene (instructions)' to 'protein (product),' labeled 'instruction flow' to illustrate the process, as in the diagram. To check your understanding, identify the supported claim that genes lead to making proteins, corresponding to choice B. A common misconception is that proteins are made first and then turned into genes, but the flow is from genes to proteins. Proteins are essential molecules that perform a wide variety of functions in cells, such as transporting substances and signaling. Ultimately, the proteins produced based on genetic instructions enable cells to carry out their necessary activities for the organism's survival and function.

Question 8

Error detection: A student draws a model to show instruction flow but labels it as Protein > Gene with the arrow labeled instructions. The student also writes: "Genes provide instructions for proteins." Which change would fix the model so it matches the statement?

  1. Reverse the arrow so it points from Gene to Protein, keeping the label "instructions." (correct answer)
  2. Change the arrow label from "instructions" to "energy" so proteins can power genes.
  3. Keep the arrow as Protein > Gene because proteins contain the instructions for genes.
  4. Remove the arrow because instruction flow cannot be shown in a model.
Explanation: The core skill is understanding that genes provide the instructions for making proteins in living organisms. Genes are segments of DNA that carry the coded instructions needed to build specific proteins. Models often depict this correctly with an arrow from gene to protein labeled 'instructions,' but errors like reversing it need correction, as in the error detection scenario. To check your understanding, determine the fix by reversing the arrow to match the statement, which is choice A. A common misconception is that proteins provide instructions for genes, but the correct flow is from genes to proteins. Proteins are essential molecules that perform a wide variety of functions in cells, such as catalyzing reactions and providing structure. Ultimately, the proteins produced based on genetic instructions enable cells to carry out their necessary activities for the organism's survival and function.

Question 9

A student interprets a model that reads: Gene (instruction list) > Protein. The arrow is labeled instructions, and the note says: "Genes provide instructions for proteins." Which claim about genes and proteins is supported?

  1. Genes decide on purpose which proteins to make depending on what the organism wants.
  2. The gene and the protein are identical because they both have the same label style in the model.
  3. The protein tells the cell which gene to make by providing instructions.
  4. The gene tells the cell which protein to make by providing instructions. (correct answer)
Explanation: The core skill is understanding that genes provide the instructions for making proteins in living organisms. Genes are segments of DNA that carry the coded instructions needed to build specific proteins. Models often depict this as an arrow from 'gene (instruction list)' to protein, labeled 'instructions' to show how cells use them, as in the student's interpretation. To check your understanding, confirm the claim that genes tell cells which proteins to make via instructions, aligning with choice A. A common misconception is that genes and proteins are identical due to similar model labels, but they are distinct with genes as blueprints. Proteins are essential molecules that perform a wide variety of functions in cells, such as catalyzing reactions and providing structure. Ultimately, the proteins produced based on genetic instructions enable cells to carry out their necessary activities for the organism's survival and function.

Question 10

A simplified classroom model shows: Gene > Protein. The arrow is labeled instructions, and a note says: "Genes provide instructions for proteins." Which claim about genes and proteins is incorrect based on the model?

  1. Genes provide instructions that are used to make proteins.
  2. Proteins are produced using instructions from genes.
  3. Genes and proteins are different: one is instructions and the other is a product made from instructions.
  4. A gene is the same thing as a protein, just written in a different way. (correct answer)
Explanation: The core skill is understanding that genes provide the instructions for making proteins in living organisms. Genes are segments of DNA that carry the coded instructions needed to build specific proteins. Models often depict this as an arrow from gene to protein labeled 'instructions' to show the distinction and flow, as in the simplified classroom model. To check your understanding, identify which claim contradicts the model by equating genes and proteins, which is choice D as the incorrect one. A common misconception is that genes and proteins are identical, but the model shows genes as instructions and proteins as products. Proteins are essential molecules that perform a wide variety of functions in cells, such as catalyzing reactions and providing structure. Ultimately, the proteins produced based on genetic instructions enable cells to carry out their necessary activities for the organism's survival and function.

Question 11

A simplified model shows: "Gene (instruction sheet)  Protein (built item)." Labels say "instructions" near the gene and "protein made" near the protein. The model states: "Genes provide instructions for proteins." What evidence in the model shows instruction flow from gene to protein?

  1. The arrow points from the gene to the protein and the labels mention instructions. (correct answer)
  2. The protein is drawn larger than the gene, so proteins must control genes.
  3. The model looks like a factory, so the cell must literally be a factory building proteins.
  4. Genes must decide which proteins to make based on what they want the organism to look like.
Explanation: The core skill focuses on how genes direct the creation of proteins through instructional information. Genes carry instructions that are transcribed and translated into protein molecules. Models demonstrate this flow with arrows and labels, such as from 'gene instructions' to 'protein product,' to visualize the relationship. To check, evaluate evidence like arrow direction and labels to confirm instruction flow from genes to proteins. A misconception is that the model's appearance, like a factory, means cells are literal factories, but models are simplifications. Proteins fulfill diverse functions in cells, including muscle contraction and hormone production. Thus, proteins built from gene instructions support all aspects of cellular and bodily functions.

Question 12

A simplified model states: "Genes provide instructions for making proteins" and shows: Gene  Protein, with the arrow labeled "instructions used to make". If a mistake occurs in the gene instructions for Protein X, which prediction about protein production is supported by the model?

  1. Protein X may be made differently because the instructions used to make it changed. (correct answer)
  2. Protein X will be unchanged because proteins are made without any instructions.
  3. The mistake will turn Protein X into a gene, since genes and proteins are the same.
  4. The mistake will automatically be fixed each day because genes change daily to match the environment.
Explanation: The core skill is predicting effects of gene changes on protein production based on instructional models. Genes carry instructions that, if altered, can change the resulting proteins. Models show this flow with arrows labeled 'instructions used to make' from genes to proteins. To check, evaluate predictions against the model's depiction of instruction dependency. A misconception is that gene mistakes self-correct daily, but changes can persist and affect proteins. Proteins perform essential functions in cells, like DNA replication and energy production. Thus, proteins from gene instructions are vital for cellular integrity and organism functionality.

Question 13

A simplified model is written on the board: "Gene = instructions  Protein = made from instructions." The model also states: "Genes provide instructions for making proteins." Which claim is incorrect based on the model?

  1. Genes provide instructions for making proteins.
  2. Proteins are made using instructions from genes.
  3. Genes are the same thing as proteins, just with a different name. (correct answer)
  4. The arrow in the model shows the direction that instructions flow.
Explanation: The core skill is learning that genes provide instructions used by cells to produce proteins. Genes carry these instructions as sequences of DNA that specify the structure of proteins. Models illustrate instruction flow through diagrams with arrows connecting genes to proteins, showing the directional process. A checking strategy is to identify any claims that contradict the model, such as equating genes directly to proteins, and verify against the arrow's direction. One misconception is that genes and proteins are identical, but genes are the instructional code while proteins are the products. Proteins execute key functions in cells, like signaling and defense against pathogens. Consequently, proteins derived from gene instructions are fundamental to cellular activities and organism development.

Question 14

A student draws a model: "Gene (instructions)  Protein (made using instructions)." The model states: "Genes provide instructions for making proteins." What evidence shows instruction flow in the model?

  1. The word "instructions" is next to the gene and the arrow points toward the protein. (correct answer)
  2. The model is drawn with straight lines, so instruction flow must be perfectly straight in real cells.
  3. The protein is shown after the gene, so proteins must cause genes to form first.
  4. The gene must choose to make a protein when it wants the organism to survive.
Explanation: The core skill is analyzing evidence in models that demonstrate instruction flow from genes to proteins. Genes carry coded instructions that cells interpret to create proteins. Models illustrate this with arrows and labels, such as 'instructions' near genes pointing to proteins. A checking strategy is to review the model's elements, like word placement and arrow direction, for evidence of flow. One misconception is that proteins precede genes in formation, but the flow is from genes to proteins. Proteins carry out functions in cells, such as communication between cells and waste removal. Overall, these proteins ensure cells function effectively and maintain organism homeostasis.

Question 15

A classroom model uses arrows to show instruction flow: "Gene (instructions)  Protein (product)." The model states: "Genes provide instructions for proteins." Which claim about genes and proteins is supported by the model?

  1. If a cell needs a protein, the environment makes the protein without using gene instructions.
  2. A single gene always makes every protein in the body.
  3. Genes provide instructions that cells use to produce specific proteins. (correct answer)
  4. Genes change into a different gene each day depending on what the person eats.
Explanation: The core skill involves recognizing how genes serve as blueprints for protein synthesis in organisms. Genes carry instructions in the form of genetic code that the cell reads to build proteins. In models, instruction flow is often depicted with arrows from genes to proteins, highlighting the process of transcription and translation. To check this, look at the model's components and ensure the arrow shows genes leading to proteins, not the reverse. A misconception is that the environment directly makes proteins without genes, but genes are crucial for providing the specific instructions. Proteins perform vital functions in cells, including acting as enzymes to catalyze reactions. In essence, proteins made from gene instructions allow cells to function, respond to stimuli, and sustain life.

Question 16

A model uses this key: "Gene = instruction set" and "Protein = product made using instructions." It shows a one-way arrow labeled "instructions" from Gene → Protein.

Which claim about genes and proteins is incorrect based on this model?

  1. The arrow shows the direction that instructions flow: from gene to protein.
  2. Proteins are made using instructions that come from genes.
  3. Genes provide instructions that can be used to make proteins.
  4. Proteins contain the instructions for making genes, so proteins come first. (correct answer)
Explanation: This question tests understanding that genes provide instructions for making proteins. Genes are segments of DNA that contain the coded instructions cells use to manufacture specific proteins. The model clearly shows a one-way arrow from gene to protein labeled "instructions," indicating that genetic information flows in this direction to create proteins. To identify incorrect claims, check if they reverse the actual relationship - proteins do NOT contain instructions for making genes; rather, genes contain instructions for making proteins. A common misconception is thinking the relationship can work backward, with proteins making genes, but information flow is unidirectional from DNA to protein. Proteins are the end products that carry out cellular functions, while genes are the stable instructions stored in DNA. Understanding this correct direction of information flow is crucial for grasping how heredity and cellular function work.

Question 17

A student reads a model: "Gene (instruction) → Protein → Function." The arrow from gene to protein is labeled "instruction flow."

Which evidence in the model shows instruction flow from genes to proteins?

  1. The arrow points from gene to protein and is labeled "instruction flow." (correct answer)
  2. The arrow goes from protein back to gene, showing proteins make genes.
  3. The model uses arrows, so it must mean the protein decides which gene it wants to use.
  4. The gene is drawn bigger than the protein, so it must control the protein by size.
Explanation: This question tests understanding that genes provide instructions for making proteins. Genes contain the coded information that cells read and use as instructions to build specific proteins. Models use arrows to show the direction of information flow, and in this case, the arrow pointing from gene to protein with the label "instruction flow" clearly indicates that instructions move from genes to proteins. To identify evidence of instruction flow in a model, look for arrows showing direction and labels explaining what flows - here it's "instruction flow" from gene to protein. A common misconception is focusing on irrelevant details like size or thinking arrows can go backward, but scientific models use arrows specifically to show direction of processes. Proteins made from these genetic instructions then perform various jobs in cells, from building structures to controlling chemical reactions. Understanding how to read these models helps students grasp the fundamental relationship between genetic information and protein production.

Question 18

A model shows: Gene card → (labeled "instructions") → Protein made → Cell job. The model statement says, "Genes provide instructions for making proteins."

Which statement describes how genes relate to proteins in this model?

  1. Proteins store the instructions that are called genes, and genes are built from proteins.
  2. Genes provide instructions that a cell uses to make proteins. (correct answer)
  3. Proteins are made randomly, and genes only show what a trait looks like after the protein is made.
  4. Genes are the same thing as proteins, just shown in different places in the model.
Explanation: This question tests understanding that genes provide instructions for making proteins. Genes are segments of DNA that carry the instructions or blueprints that cells use to build specific proteins. The model clearly shows a one-way flow from gene card to protein made, with the arrow labeled "instructions," demonstrating that information flows from genes to proteins. To check the correct answer, look for the arrow direction and what it's labeled - it should go FROM gene TO protein with "instructions" as the label. A common misconception is thinking genes and proteins are the same thing or that proteins make genes, but genes are the instructions while proteins are the products made from those instructions. Proteins then carry out specific functions in cells, like speeding up chemical reactions or providing structure. Understanding this gene-to-protein relationship is fundamental to how traits are expressed in living organisms.

Question 19

A model reads: "Gene = instructions" and "Protein = made from instructions." It shows a one-way arrow labeled "instruction flow" from Gene to Protein.

Which statement describes how genes relate to proteins in this model?

  1. Proteins are instructions that a cell uses to make genes.
  2. The arrow is only something to memorize; it does not mean instructions move from gene to protein.
  3. Genes are proteins that have not been built yet.
  4. Genes are instructions that a cell uses to make proteins. (correct answer)
Explanation: This question tests understanding that genes provide instructions for making proteins. Genes are specific sequences of DNA that serve as instruction sets or blueprints that cells use to manufacture proteins. The model explicitly defines genes as instructions and proteins as products made from those instructions, with a one-way arrow showing instruction flow from gene to protein. To verify the correct relationship, match the definitions given in the model - genes equal instructions, and proteins are made from instructions. A common misconception is reversing this relationship or thinking genes and proteins are the same thing, but they have distinct roles: genes store information while proteins are the functional molecules. Proteins carry out the actual work in cells, performing tasks like transporting oxygen or fighting infections. This fundamental relationship between genetic instructions and protein products underlies all of molecular biology.

Question 20

A model of instruction flow shows: Gene card  Instruction arrow  Protein  Function. The labels on the arrow say, "instructions for making proteins." The model also states: "Genes provide instructions for proteins." Which statement describes how genes relate to proteins in this model?

  1. Proteins store genes so the cell can use them later.
  2. Genes are instructions that tell the cell how to make specific proteins. (correct answer)
  3. Genes are proteins that directly do the cells work.
  4. Proteins are made randomly, and genes only provide energy for the process.
Explanation: The skill being tested is understanding that genes make proteins by providing instructions. Genes are segments of DNA that carry the instructions or blueprints for making specific proteins in cells. In this model, the arrow shows instruction flow going from the gene card to the protein, demonstrating that genes provide the directions for protein production. To check your understanding, trace the arrow's direction and read the labels - it clearly shows instructions flowing from gene to protein, not the other way around. A common misconception is thinking genes and proteins are the same thing or that proteins make genes, but the model shows genes come first as instructions. Once proteins are made using gene instructions, they carry out important functions in cells like speeding up reactions, providing structure, or helping cells communicate. This fundamental relationship between genes and proteins explains how genetic information becomes functional molecules in living organisms.