Gene Expression Unit Review

Cell differentiation is critical during embryonic development. The process of cell differentiation results in the production of many different kinds of specialized cells. This process is most directly influenced by

• DNA

• Lipids

• Carbohydrates

• ATP

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NGSS.HS-LS1-4

What is the role of stem cells in cell differentiation?

• These cells can turn into specialized cells and back into generalized cells when needed

• They are generalized cells that can lead to specialized cells

• They are specialized cells that can lead to generalized cells

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NGSS.HS-LS1-4

Which reason explains why nerve cells function differently than muscle cells?

• In nerve cells all the genes are expressed.

• In muscle cells all the genes are expressed.

• In both kinds of cells the same genes are expressed.

• In both kinds of cells different genes are expressed.

What is the amino acid sequence for the following mRNA strand:

CCA-GAG-UAG

Write your answer like this: ___-___-___

(a)  

What is the amino acid sequence for the following mRNA strand:

UCG-GAA-CAU

Write your answer like this: ___-___-___

(a)  

Tags

NGSS.HS-LS1-1

What is the amino acid sequence for the following mRNA strand:

AGG-UUC-CUG

Write your answer like this: ___-___-___

(a)  

Tags

NGSS.HS-LS1-1

Label this image:

1= ​ (a)  

2= ​ (b)  

4= ​ (c)  

7= ​ (d)  

• DNA
• mRNA
• tRNA
• rRNA (ribosome)

Tags

NGSS.HS-LS1-1

The sequence of DNA below is part of a gene. How many amino acids are coded for by this segment? ATC AGC GCT GGC CCC GTA

• 2

• 3

• 6

• 18

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NGSS.HS-LS1-1

Some events that take place during the synthesis of a specific protein are listed below. Put them in the correct order.

• Messenger RNA attaches to a ribosome.

• DNA serves as a template for RNA production.

• Amino acids are bonded together.

• Transfer RNA bonds to a specific codon.

• RNA moves from the nucleus to the cytoplasm.

Tags

NGSS.HS-LS1-1

The process represented in the diagram is most closely associated with the cell organelle known as the

• ribosome

• nucleolus

• mitochondrion

• chloroplast

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6