Which statement regarding agricultural biotechnology is FALSE?
a. Scientists have created plants that produce an insect toxin originally found in bacteria.
b. Scientists have used gene silencing to create tomatoes with a longer shelf life.
c. Agricultural biotechnology is extremely limited because foreign genes cannot be inserted into plant cells.
d. Scientists have created plants that are resistant to herbicides by using a mutant enzyme gene from Salmonella.
Answer: c. Agricultural biotechnology is extremely limited because foreign genes cannot be inserted into plant cells.
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The F (fertility) plasmid contains a set of genes that encode for the ________ proteins that are essential in conjugative transfer of DNA
A) pili B) SOS repair C) transduction D) transformation
What does a typical recessive allele code for?
A) a lethal protein B) a nonfunctional protein C) a functional protein D) a mutant protein
Assuming that all of the flagella found among the various types of protists require the same amount of ATP per unit time to operate, and assuming that all of an individual protist's flagella are in use simultaneously, then which of these protists should use the greatest amount of ATP per unit time to move about?
a. Chlamydomonas b. dinoflagellates c. euglenids d. diplomonads e. golden algae
Proteins contain both acidic and basic R groups and can, therefore, function as
A. energy storage macromolecules. B. structural macromolecules. C. buffers. D. catalysts. E. genetic material.