Which of the following would be regarded as an organic molecule?

• H2O

• PO4-

• NaOH

• C2H3O2-

Which of the following is NOT a function of a plasma membrane protein?

• Attachment between cytoskeleton and extracellular matrix

• Ionic transport through the membrane

• Cell to cell recognition

• Oxygen transport

Which of the following is maintained at the highest concentration within cells?

• Calcium

• Potassium

• Sodium

• Magnesium

Which of the following is TRUE regarding lipid bilayers?

• Fatty acids can cross lipid bilayers

• Phospholipids are connected to each other through covalent bonds

• They are hydrophilic on only their extracellular surface

• Cholesterol cannot cross lipid bilayers

Sugars have been removed from a protein. As a result, the diameter of the protein decreases 3 fold. What happens to the relative rate of diffusion of that protein?

• Increases 3 fold

• Increases 9 fold

• Decreases 3 fold

• Decreases 9 fold

Active transport of a molecule across the plasma membrane is dependent on its..

• Amount of charge

• Number of polar groups

• Availability of ATP

• None of the above

Active transport across the plasma membrane would move calcium ___ the cytosol and facilitated diffusion would move potassium ___ the cytosol.

• Into, into

• into, out of

• out of, into

• Out of, out of

Some of the steps of the cell cycle are listed below. Place them in order from beginning to last.

I. Chromosomes begin to condense

II. Cytokinesis

III. Nuclear envelope forms

IV. DNA Synthesis

• I, II, III, IV

• IV, I, III, II

• II, III, IV, I

• IV, III, II, I

Which of the choices below is the parent cell for all formed elements of blood?

• Megakaryocyte

• Normoblast

• Hemocytoblast

• Polymorphonuclear cell

Blood is unique compared to other connective tissues because it has

• multiple cell types without nuclei

• a high rate of cell division

• a fluid extracellular matrix

• A and B

• A and B and C