Select all of the layers of the digestive system wall.

A. Submucosa
B. Serosa
C. mucosa
D. muscularis


Answer: A, B, C & D.

A. Submucosa
B. Serosa
C. mucosa
D. muscularis

Biology & Microbiology

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The cell's plasma membrane mediates which of the following transactions with the environment? Choose all that apply.  

_____ Ingesting food molecules and sometimes entire cells _____ Returning waste and other molecules back to the environment _____ Responding to a host of chemical cues _____ Directing synthesis of various food-digesting proteins _____ Passing messages to other cells

Biology & Microbiology

In which vessels does blood flow need to slow down to ensure adequate diffusion of substances from blood to tissue?

a. capillaries b. arteries c. veins d. venules e. arterioles

Biology & Microbiology

DNA polymerase III adds nucleotides ________

A) in the place of the primer RNA after it is removed B) to the 3' end of the RNA primer C) to both ends of the RNA primer D) to internal sites in the DNA template E) to the 5' end of the RNA primer

Biology & Microbiology

The blood vessel that provides oxygen to the heart tissue is the

What will be an ideal response?

Biology & Microbiology