Fatty acids in soap have a polar end and a nonpolar end. Which of the following best describes these molecules?

The region of an enzyme into which the substrate fits is a

Which of the following structures function in holding organelles in place, maintaining cell shape and rigidity, and directing organelle movement?

Fine hair called _________, which is unpigmented or lightly pigmented, is the primary human hair and is found on the upper and lower limbs.

The microscopic bony chambers that house mature bone cells are called

  This figure illustrates the microscopic anatomy of spongy bone. Which is a mature bone cell?

Which type of hair forms the beard on the faces of males?

Which of the following describes a meniscus?

The nucleus of a neuron is found in its

The primary inhibitory neurotransmitter in the brain is