The waxy polymer on the leaves of vascular plants that protects them from pathogens is called
A. cutin.
B. cellulose.
C. chitin.
D. sporopollenin.
E. lignin.
Answer: A
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Which of the following statements is true of horsetails?
A. They have photosynthetic stems without leaves. B. They do not form roots. C. They produce tiny leaves arranged in whorls. D. Their stems are solid with densely packed photosynthetic cells. E. The fossil record indicates that they were always very small.
Active transport
a. helps establish the resting potential of a neuron. b. counters the process of diffusion. c. allows transport of ions across the plasma membrane of the neuron against the concentration gradient. d. helps establish the resting potential of a neuron and counters the process of diffusion. e. does all of these.
The insertion of foreign DNA directly into a cell's nucleus using a glass micropipet is called (microporation/electroporation/microinjection)
What will be an ideal response?
The development of successful antiviral drugs has been relatively easy because viral structure is so different from the structure of eukaryotic cells.
Answer the following statement true (T) or false (F)