AP Biology Review (Biochemistry, the cell)

Which of the following is correct about the molecule cholesterol?

• it is a polar molecule
• it is a protein
• it stores energy as a charbohydrate
• it is hydrophobic

All of the following are correct about enzymes EXCEPT?

• they enable reactions to occur that would not normally occur.
• they lower the energy activation
• they are polymers of amino acids
• they generally denature at temperatures above 40 degrees Celsius 

Tags

NGSS.HS-PS1-5

A liquid has a pH of 3. Which of the following is correct about this liquid? 

• it is alkaline
• the concentration of protons in the liquid is .01 molar
• it has a similar pH to most human body cells
• it has the same pH as human blood

Which of the following is correct about water?

• it is a polar molecule and contains polar bonds
• it is a polar molecule and contains non-polar bonds
• it is a non-polar molecule and contains polar bonds
• it is a non-polar molecule and contains non-polar bonds 

Tags

NGSS.HS-PS1-3

Which of the following is correct about cells?

• prokaryotic cells lack nuclear material
• ribosomes are found in both prokaryotes and eukaryotes
• smooth endoplasmic reticulum is involved in DNA synthesis
• cilia consist of microfilaments

Which cell structure is most directly involved with apoptosis? 

• golgi apparatus
• endoplasmic reticulum
• nucleolus
• lysosome

Which of the following is a correct statement about cell function?

• countercurrent exchange is an example of passive transport
• the passage of Ca ions through a Ca channel requires energy
• the water potential of pure water is a negative number
• all body cells look very much alike except for fat cells, which have a large central vacuole

Tags

NGSS.HS-LS2-3

Which is a correct statement about this cell in a solution?

• the cell is turgid
• the cell has lost water because it is a hypertonic solution
• the cell has lost water because it is in a hypotonic solution
• the cell is a plant cell

Which of the following is not directly involved with cell communication?

• simple diffusion
• quorum sensing 
• helper T cells
• acetylcholine

A liquid with a pH of 4 is _x more concentrated in H⁺ than a liquid with a pH of 6. 

• 10
• 100
• 1,000
• 10,000