DNA & Individuality (gene expression)

How can a person's muscle cells have the same exact DNA sequences as their nerve cells even though the look and perform completely different?

• The two different cells become mutated
• The proteins expressed in each cell are different
• They actually have different DNA in the two types of cells.
• The genome of the different cells changes

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DNA holds the code for (DNA makes)

• lipids
• carbohydrates
• protein
• sugar

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Which component of DNA determines the traits of an organism? 

• Nitrogen Base order 
• Sugar-Phosphate Backbone
• Hydrogen bonds

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How are similarities passed from parent to offspring?

• through teaching
• through learning
• through blood
• through genes

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Genes are expressed...

• differently in each cell in the body.

• by altering the genome.

• in response to only intracellular processes.

• consistently throughout an individual's life.

How is the information in a DNA molecule expressed in an organism?

• through plasmids
• through RNA polymerase
• through recombinant DNA
• through proteins

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T4 - In embryonic development,  the process by which cells specialize is called

• Cell differentiation
• morphogenesis
• cell division
• endoplasmic reticulum

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Which of the following best explains the term gene expression?

• the production of proteins based on the genetic information in DNA
• the suppression of RNA polymerase
• the suppression of protein production
• the production of lipids based on the genetic information in DNA

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Why do bone cells become bone cells, heart cells become heart cells, skin cells become skin cells, etc...?

• It just happens randomly
• Determined by the mother while in the womb
• The turning on/off of certain genes that are needed for that type of cell
• The zygote tells them what to become

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When a human embryo is developing, the embryo produces a special type of hemoglobin not found in infant, child, or adult blood. Which of the following best explains how an embryo can produce a different type of hemoglobin from an infant, child, or adult?

• The embryo has different genes from the infant, child, or adult.
• Development and differentiation result in the loss of certain genes.
• Humans have genes for the different types of hemoglobin, which are expressed at different times.
• Aliens visited the human at different phases of their lives and changed them.

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