18 Questions
Which one of these is a behavioral characteristic of cells deficient in steroid hormones and cholesterol?
Lack of motility
What might you expect to see when exposing cells deficient in steroid hormones and cholesterol to very cold conditions in the lab?
All of the above
What concept in biology can be illustrated by a messy kitchen during remodeling?
The second law of thermodynamics
Following a meal high in protein, how are amino acids transported and stored in cells?
Transporter that does not require ATP
What would you expect to see in cells deficient in steroid hormones and cholesterol?
None of the above
What is the purpose of breaking down protein into its component amino acids and storing them in cells?
For use during translation
Which of the following is true about amino acid transport into cells?
Amino acids are transported by active transport
In the figure above, which egg experienced a weight gain after being placed in a 15% NaCl solution?
Egg 3
After placing Egg 2 in an unknown solution, the egg begins to swell. What can you conclude about the unknown solution?
The unknown solution has a concentration greater than 15% NaCl
What is the portion of a system's energy that can perform work called?
Free energy
Why is ATP important to metabolism?
Hydrolysis of the bond between adenine and ribose in ATP is commonly used to release energy that can be used to drive other cellular reactions
What role does amylase play in the breakdown of starch?
Amylase decreases the activation energy required for the reaction
Which cytoskeletal structure is composed of actin and regulates cell shape, cell movement, and muscle contraction?
Microfilaments
Which organelle is most likely affected in Tay Sachs syndrome, a fatal human disease caused by the accumulation of lipids in the brain?
Lysosomes
How can a defect in the inner membrane of mitochondria cause limited exercise ability in individuals?
A less convoluted inner membrane has less surface area available to create the proton electrochemical gradient needed for ATP production
A cell biologist has developed a drug that interferes with vesicle transport at the cis face of the Golgi apparatus. Upon which process will this drug have an effect?
The movement of materials from the Golgi apparatus to the plasma membrane
During the citric acid cycle, more free energy is released than during glycolysis. However, only 1 molecule of ATP is produced for each molecule of acetyl CoA that enters the cycle. What happens to the remaining free energy?
Lost as heat
In the reaction: Pyruvate + CoA + NAD+ → Acetyl CoA + CO2 + NADH, which molecules are oxidized and reduced?
Pyruvate is oxidized and NAD+ is reduced
Test your knowledge on the cytoskeletal structures and cell membranes! Identify the components involved in regulating cell shape, movement, and muscle contraction. Determine which cells possess plasma membranes. Take the quiz and challenge yourself now!
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