What type of joints connects flat bony surfaces, keeping them slightly separate to avoid friction?
a. gliding joints
b. hinge joints
c. pivot joints
d. saddle joints

What are the pros and cons of quadrat sampling?

Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?

Suppose you are provided with an actively dividing culture of e. coli bacteria to which radioactive thymine has been added. what would happen if a cell replicates once in the presence of this radioactive base?