AP Biology Cells Review Part 2

Which of the following contains the highest water potential? 

• A
• B
• C
• D

In the membrane section seen, which section would represent the non-polar section of a protein?

• A
• B
• C
• D

Which of the numbers above represent the signal reception?

• 1

• 2

• 3

Signaling molecules such as hormones can be lipid soluble or water soluble. What is the difference?

• The receptor is on the surface of the cell for the lipid.

• The receptor is inside the cell for the water.

• The receptor is on the surface of the cell for the water.

• There is no difference.

Phosphorylation cascades that involve a series of protein kinases are useful for signal transduction because

• They are the signal reception

• They have the ability to amplify the original signal

• They decrease the number of molecules used

• They are species specific

What role do protein kinases serve?

• remove phosphate groups to deactivate enzymes
• inactivate cAMP to AMP
• add phosphate groups to activate enzyme's
• activate G proteins

Which organelles modifies proteins and packages them into vesicles to be shipped out of the cell?

• free ribosomes
• rough ER
• smooth ER
• golgi apparatus

____________ & _________________ are organelles that definitely arose from endosymbiosis.

• Rough ER & Smooth ER
• Mitochondria & Flagellum
• Chloroplast & Mitochondria
• Chloroplast and Golgi apparatus

Which of the following is not a part of interphase?

• G2
• M
• G1
• S

The phase of mitosis in which the sister chromatids separate from each other

• prophase
• metaphase
• anaphase
• telophase