26. Membrane proteins that are very soluble in water are known as _____________________ .

36. Facilitated diffusion is an important method for cells in obtaining necessary molecules and removing other ones. Requirements for facilitated diffusion include  

The four primary tissue types found in adult organs include all of the following except

A 39-year-old woman is in her sixth week of pregnancy. Due to her advanced age, she is at higher risk for having a baby with Down’s syndrome than younger pregnant women. She would like to find out as early as possible whether or not her baby has Down’s syndrome. Her doctor should suggest

The genetic code uses ________ nucleotide(s) to specify one amino acid.

After attaching to a bacterial cell, a bacteriophage typically

6. Integrins are glycoproteins that help link the cytoskeleton and the:  

37. What is the main component of an animal cell membrane?  

Glycosaminoglycans (GAGs) help give the ground substance some of its qualities, such as

38. What initiates the sodium-potassium pump?