Two barnacles, Balanus and Chthamalus, can both survive on the lower rocks just above the low-tide line on the Scottish coast, but only Balanus actually does so, with Chthamalus adopting a higher zone. Which of the following best accounts for this niche separation?

TLS Online TPP Program

#Question id: 2359

#Unit 2. Cellular Organization

 Sometimes smooth ER specializes in the production of ____ 

TLS Online TPP Program

#Question id: 2360

#Unit 2. Cellular Organization

A mitochondrion has a(n) ______ , an inner space filled with a gel-like fluid.

TLS Online TPP Program

#Question id: 2361

#Unit 2. Cellular Organization

______ of the cytoskeleton help maintain the shape of the cell.

TLS Online TPP Program

#Question id: 2362

#Unit 2. Cellular Organization

Before a cell divides, the centrioles ______

TLS Online TPP Program

#Question id: 2363

#Unit 2. Cellular Organization

Cells lining the respiratory tract contain ______ that help keep the lungs clear of particles.

TLS Online TPP Program

#Question id: 2364

#Unit 2. Cellular Organization

An enzyme's specificity is caused by the ______ of the active site.