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Laabri

Unit 3 Practice Test

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26 Nsɛmmisa
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Asemmisa {{asɛmmisaAhyɛnsode}}
1.

Match the macromolecule to its structure or building blocks.

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Lipids

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Made of amino acids linked by peptide bonds.

Proteins

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Composed of monosaccharides like glucose.

Carbohydrates

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Formed from nucleotides with phosphate groups.

Nucleic acids

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Made from fatty acids and glycerol.

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2.

Match the macromolecule to its key phrase

Draggable itemarrow_right_altCorresponding Item

Carbohydrates

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Enzymes

Lipids

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Glucose

Protein

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DNA and RNA

Nucleic acids

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Cell membrane

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3.

Which sugar is found in DNA?

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4.

What base does RNA use instead of thymine?

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5.

What is the primary role of RNA?

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6.

What is the primary function of enzymes in biological systems?

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7.

What affects enzyme activity the most?

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8.

What happens to an enzyme after a reaction?

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9.

What term describes the specific region an enzyme binds substrate?

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10.

What type of replication is DNA replication described as?

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11.

For eukaryotic cells, DNA replication occurs in the

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12.

Where does DNA replication occur in eukaryotic cells?

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13.

What is the main purpose of DNA replication?

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14.

What is the main purpose of transcription in cells?

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15.

Where does transcription occur in eukaryotic cells?

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16.

What is a change in DNA sequence called?

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17.

DNA sequence: TAC GAG CGC

Identify the correct mRNA sequence below.

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18.

What is a point mutation?

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19.

What is a frameshift mutation?

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20.

Match the terms related to protein synthesis.

Draggable itemarrow_right_altCorresponding Item

mRNA

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site of protein assembly.

tRNA

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transcribes DNA into a working copy.

ribosome

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brings amino acids to ribosomes.

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21.

Where does translation occur in eukaryotic cells?

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22.

How many nucleotides make up one codon?

1
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23.

DNA sequence: AGG

RNA sequence: UCC

What is the amino acid that corresponds?

1
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24.

DNA sequence: TAG

What is the amino acid sequence that corresponds?

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25.

Biotechnology primarily utilizes the biological molecules and systems from organisms, especially their DNA. Here's how:

  1. DNA and Genes: DNA contains genes, which are like recipes that tell cells how to make proteins. In biotechnology, scientists take specific genes from one organism and put them into another to give it new abilities. For example, they might put a gene from a jellyfish into a plant to make it glow.

  2. Proteins and Enzymes: Proteins made from DNA instructions do important jobs, like breaking down food or fighting off germs. In biotechnology, proteins and enzymes are used to create medicines (like insulin for diabetes) or help in industrial processes (like enzymes in laundry detergent).

  3. Cells and Microorganisms: Whole cells, like bacteria or yeast, are used to make products. For example, yeast is used in biotechnology to make bread rise and to produce biofuels.

  4. Viruses and Plasmids: These are used as tools to carry new genes into cells. For instance, in gene therapy, modified viruses deliver healthy genes to fix genetic disorders.

Overall, biotechnology uses parts of living things—mainly their DNA, proteins, and cells—to make useful products and solve problems.

What does biotechnology primarily utilize from organisms?

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26.

A blood sample was collected from a crime scene and analyzed using DNA fingerprinting. The DNA profiles of the crime scene sample and three suspects (Suspect 1, Suspect 2, and Suspect 3) are shown below.

Based on the DNA profiles, which suspect is most likely to have been present at the crime scene? First look at the crime scene, then compare to the suspect to see the closest match.