Gene Expression

DNA controls the cell by instructing it when and how to make different

• nucleotides

• proteins

• fatty acids

• carbohydrates

What process is going on in this photo? 

• Transcription 
• Translation 
• Replication 
• All the above 

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

When gene expression occurs

• A gene is mutated with either an insertion or deletion

• The gene is removed from the genotype in that cell

• The gene is passed on to the daughter cells during mitosis

• The gene is activated and used in protein synthesis

Which is the organelle that makes proteins?

• Nucleus

• Ribosome

• Rough ER

• Golgi Apparatus

As a fertilized egg divides, the cells differentiate because they

• have different sets of DNA passed on to the daughter cells

• have different sets of genes activated in the daughter cells

• have mutations that cause different genes to appear in the daughter cells

• randomly assort the chromosomes into different daughter cells

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.

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

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

DNA controls the cell by instructing it when and how to make different

• nucleotides

• proteins

• fatty acids

• carbohydrates