It took 3 million years for the human population to reach 1 billion, 123 years to grow to 2 billion, and
12 years to grow from 6 to 7 billion.
Indicate whether the statement is true or false.
T
Biology & Microbiology
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Which of the following is NOT an effect observed in the guard cells of stomata?
A) Guard cell shrinkage B) K+ exits guard cells C) Changes in membrane potential D) cell expansion driven by proton ATPases E) water exits guard cells
Biology & Microbiology
An example of correct nucleotide pairing is
A) T and U. B) G and U. C) A and T. D) C and U.
Biology & Microbiology
Antibiotic resistance resulting from altered cellular physiologic structure caused by changes in a microorganism's usual genetic makeup is known as __________ resistance
a. intrinsic b. inherent c. acquired d. environmentally mediated
Biology & Microbiology
Which of the following involves removing introns and reconnecting exons in a pre- mRNA?
a. splicing b. encoding c. translating d. elongation
Biology & Microbiology