Despite the differences between eukaryotic and prokaryotic cells, prokaryotes have proteins that are distantly related to eukaryotic actin filaments and microtubules. What is likely to be the most ancient function of the cytoskeleton?
(a) cell motility
(b) vesicle transport
(c) membrane support
(d) cell division
(d)
You might also like to view...
Even to a well-trained microbiologist, isolates of Streptomyces when grown on a nutrient agar plate can appear as though they are fungi
Describe key similarities of how these two unrelated groups can so easily be mistaken for each other, and then propose methods to conclusively distinguish between them. What will be an ideal response?
F. acidarmanus, a species of bacteria that lives in California copper mines, has adapted to its environment by altering
the ____ at which its enzymes function.
a. temperature b. pH c. light levels d. substrate concentration e. salt concentration
Most adolescents begin smoking
a. because of its stimulatory effects. b. because it makes them look sophisticated. c. due to the influence of celebrities. d. to defy their parents. e. as a result of social pressures.
Which cell membrane components are present in plant cells but absent in animal cells?
A) phospholipids B) plasmodesmata C) gap junctions D) proteins E) carbohydrates