QUIZ: Unit 4, Lesson 8 - Proteins, Genes, and Chromosomes

Which of these is an example of how proteins function in the body?

• Proteins are excreted to send signals between cells.

• Proteins are excreted to hold cells together in a tissue.

• Proteins build and repair organelles and other cell structures.

• All of these answer choices

Which of these is NOT a protein found in the skin?

• A. albutin

• B. collagen

• C. elastin

• D. keratin

When people age, their skin cells make...

• more collagen and elastin over time, resulting in a weaker skin structure.

• less collagen and elastin over time, resulting in a weaker skin structure.

• more collagen and elastin over time, resulting in a stronger skin structure.

• more collagen over time, resulting in less elastin in the skin structure.

When the shape of a hemoglobin protein changes in people with sickle cell anemia, the red blood cell that houses it...

• continues to expand until the cell divides.

• becomes an entirely different kind of cell.

• also changes shape and becomes less effective.

• becomes thinner and better at transporting oxygen.

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How can the shape of the proteins forming a person’s taste buds affect what they taste?

• It doesn’t affect what a person tastes.

• It can change the types of food a person can digest.

• It can cause a person to have no tastebuds.

• It can increase or decrease a person’s ability to taste a substance.

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Melanin is a substance that determines the...

• structure of your skin.

• the speed at which you age.

• number of taste buds you have.

• color of your skin and eyes.

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What happens to people when they make a lot of P protein?

• They have blue eyes.

• They develop albinism.

• They create too much melanin.

• They have darker skin and eyes.

Which eye color has the least P proteins?

• blue

• brown

• green

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What causes a gene to become “expressed”?

• A gene is expressed when its instructions have been followed by a cell.

• A gene is expressed when none of its instructions have been followed by a cell.

• A gene is expressed when a cell deletes that segment of information.

• A gene is expressed when it transfers information to another cell.

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Genetics is the study of...

• how cells work together.

• the structure and function of the human body.

• the different kinds of proteins and how they build cells.

• inheritance of genes that results in certain traits.

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