Bt corn is
A) adapted to resist Bt pesticides.
B) grown only on no till farms.
C) a variety that possesses genes from a bacterium.
D) a drought tolerant form of corn.
C
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Answer the following statements true (T) or false (F)
1. Plant cell membranes contain cholesterol. 2. Membrane proteins are attached to or embedded in the phospholipid bilayer. 3. The presence of integral proteins allows membranes to be selectively permeable to certain molecules. 4. Freeze fracture electron microscopy allows one to observe the two-dimensional cross section of membrane proteins.
Duchenne muscular dystrophy is caused by a mutation that ____
a. b. weakens myofibrils c. decreases the transmission of force d. disrupts the sarcomere e. increases the transmission of force
Division of the cytoplasm in animal cells begins _____
a. as microtubules assemble at each pole of the nucleus b. as Golgi body vesicles are guided by microtubules to the center of the cell c. during S phase d. as rigid phospholipid bilayer is synthesized in between the dividing cells e. as a cleavage furrow is created by microfilaments in the cell's midsection
Koch's postulates include all the following except:a
when a sample of a pure culture is injected into a healthy host, it causes the same disease. b. a sample of the microorganism from a diseased host can be grown in pure culture. c. the microorganism can be recovered from an experimentally infected host. d. the microorganism must be visible in the electron microscope. e. the pathogen must be present in every individual with the disease.