Cell Biology Answers

You are a researcher interested in the Dystrophin gene. The Dystrophin gene is a gene that encodes the dystrophin protein that is required for muscle function and therefore is only expressed in muscle cells. From which of the following cells types would you expect to be able to isolate the Dystrophin gene? Explain your reasoning.

Fun fact: the Dystrophin gene is the largest gene in our genome! It’s codes for a really big protein too.

Fat cells

Skin cells

Muscle cells

All of these cells

What is the largest human organ?

1.     You were informed that the oil spill that took place in the Kalba sea reached water desalination plants in the Fujairah area.

Formulate a hypothesis to state whether these bacteria will be able to thrive and function properly if they were to be used to treat oil spills in freshwater environments like the Fujairah desalination plants. Support your claim with scientific reasoning explaining why or why not.

The amino acid asparagine is synthesized from aspartic acid by the enzyme asparagine synthetase (AS).

Propose a scheme where a cell can regulate the expression of AS. Include a figure clearly diagramming the regulation mechanism.

Your scheme should account for the concentrations of asparagine and aspartic acid.

Malignant tumors are sometimes treated with drugs that halt mitosis, and thus stop the production of new cancer cells. Two such drugs, vincristine sulfate and vinblastine sulfate, interfere with the formation of spindle fibers. How could this action halt mitosis? Antibiotics such as mitomycin C and inorganic compounds such as cis-platinum also can be used to stop the growth of tumors. These drugs interfere with DNA synthesis in treated cells. How could this action halt mitosis?

During anaphase the centromere of the chromosome split

Describe the features of bacterial (prokaryotic) cells

name the psychologists involved in the experiments of photosynthesis

"Increased Soil salinity happens due to accumulation of large amount of soluble salts in the soil. this can have a lot of harmful effects on plants such as retardation of the growth as a result of reducing the amount of water absorbed". Explain this based on what you have studied.

How do skin cells replace itself after an injury?