Which statement is NOT true?
a. Membranes are often perforated by proteins that
extend through both sides of the membrane.
b. Some membranes have proteins with channels
that allow for the passage of hydrophilic
substances.
c. Hydrophilic substances have an easier time
passing through membranes than do
hydrophobic substances.
d. The current concept of a membrane is best
summarized by the fluid mosaic model.
e. All of these.
Answer: c
You might also like to view...
Which of the following represents ways in which canned foods may undergo spoilage?
A. Leakage of contaminated water through can seams during cooling B. Spoilage before canning C. As a result of underprocessing during canning D. All of the choices are correct.
What supplies the electrons for oxidative phosphorylation?
a. ATP b. NADH and FADH2 c. glucose d. the proton gradient e. ATP synthase
Both strands of the short, double-stranded regulatory RNA molecules are required by the Slicer protein in order to target the complementary RNA for degradation
Indicate whether the statement is true or false
Which of the following organisms is photoautotrophic protozoan?
A) oomycote B) cellular slime mold C) Euglena D) Phytophthora E) plasmodial slime mold