The innermost lining of the gastrointestinal tract is the ________

A) serosa B) submucosa C) muscularis D) mucosa


Answer: D

Biology & Microbiology

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Which of the following statements about the bacterial ribosome is nottrue?

A. The 70S ribosome is a complex of 50S and 30S subunits. B. The entire protein component of the 30S subunit is a single polypeptide chain. C. Each ribosomal subunit contains at least one RNA molecule. D. An rRNA molecule, rather than protein, catalyzes peptidebond formation.

Biology & Microbiology

What do synaptic signaling and paracrine signaling have in common?

A. Cells release a signal that affects it and neighboring cells. B. Cells release a signal that affects cells at long distances. C. Cells release a signal through gap junctions to affect neighboring cells. D. Cells bind a membrane bound signal on a neighboring cell. E. Cells release a signal that affects neighboring cells.

Biology & Microbiology

Describe two classes of proteins known to be involved in the regulation of the cell cycle

What will be an ideal response?

Biology & Microbiology

Diagram a flower, labeling the parts and identify the function of each labeled part from the following

list: a) reproduction male, b) reproduction female, c) attracting a pollinator, d) point of attachment of flower parts, and e) protection for a bud. What will be an ideal response?

Biology & Microbiology