Golden rice contains a transgene that allows for increased production of vitamin A
a. True
b. False
True
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If a horticulturist breeding gardenias succeeds in having a single plant with a particularly desirable set of traits, which of the following would be her most probable and efficient route to establishing a line of such plants?
A) Backtrack through her previous experiments to obtain another plant with the same traits. B) Breed this plant with another plant with much weaker traits. C) Clone the plant. D) Force the plant to self-pollinate to obtain an identical one. E) Add nitrogen to the soil of the offspring of this plant so the desired traits continue.
Kinetic proofreading allows an enzyme to discriminate between two substrates by:
A. using a binding pocket of a specific size. B. using a multistep reaction and energy to reverse reactions. C. using a binding pocket of a specific shape. D. increasing the rate of the single chemical step of the reaction.
Why is visualization not sufficient to properly identify bacteria?
a. Identification is only needed in clinical specimens. b. Not all bacteria can be seen with a light microscope. c. Many unrelated bacteria can share the same shape. d. Bacteria have a limited set of shapes. e. Bacteria have a limited set of shapes and many unrelated bacteria share the same shape.
Answer the following questions true (T) or false (F)
1. Acute inflammation is normally beneficial. 2. The growth of some microbes is inhibited by elevated body temperature. 3. Neutrophils can kill bacteria by nonphagocytic mechanisms.