Multiple Choice
What is the best reason why oxygen (O₂) can cross the plasma membrane by simple diffusion,but glucose must be transported across the barrier by facilitated diffusion?
A) Oxygen is a much smaller molecule,making it easier to pass through the molecules of the plasma membrane.
B) Oxygen is a nonpolar molecule,easily passing through the nonpolar middle area of the plasma membrane.
C) Oxygen can be burned/consumed as it crosses the membrane,providing the energy needed for its passage.
D) Glucose is nonpolar,making it very difficult for it to cross the polar portions of the plasma membrane structure.
Correct Answer:
Verified
Correct Answer:
Verified
Q49: Prokaryotes lack organelles.
Q50: Functions of the glycocalyx include all of
Q51: Small,hydrophobic molecules pass through a cell membrane
Q52: What will happen if a bacterial cell
Q53: How do spirochetes and spirilla differ?<br>A)Spirochetes do
Q55: Which of the following organelles most closely
Q56: Spheroplasts,protoplasts,and mycoplasms are bacterial cells without cell
Q57: The cell walls of bacteria are responsible
Q58: Figure 4.3<br> <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6915/.jpg" alt="Figure 4.3
Q59: Figure 4.3<br> <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6915/.jpg" alt="Figure 4.3