question archive Question 8) Muscle cells differ from nerve cells mainly because they  Select one: a

Question 8) Muscle cells differ from nerve cells mainly because they  Select one: a

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Question 8) Muscle cells differ from nerve cells mainly because they 

Select one:

a. express different genes.

b. contain different genes.

c. have unique ribosomes.

d. have different chromosomes.

 

Question 9

Proto-oncogenes can change into oncogenes that cause cancer. Which of the following best explains the presence of these potential time bombs in eukaryotic cells? 

Select one:

a. proto-oncogenes were introduced into DNA from infecting viruses.

b. proto-oncogenes help regulate mitosis and embryological development.

c. roto-oncogenes are part of the normal genetic "junk" found in all eukaryotic DNA.

d. cells naturally produce proto-oncogenes as they age.

 

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