Cancer cells
A) divide uncontrollably and then die.
B) are particularly sensitive to extracellular signals.
C) are dedifferentiated.
D) are impossible to grow in culture.
C) are dedifferentiated.
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Based on what you know of ATP's chemistry, which of the following might be most likely to have possible similar uses in energy-management processes?
A. lysine (amino acid) B. phospholipids C. guanine nucleotide D. steroids E. potassium ions (K+)
Which of the following organisms has the largest brain compared to their body size?
A. elephants B. blue whales C. gorillas D. humans E. goldfish
In an experiment like that of the 1952 Hershey and Chase experiments, 35S was added to a phage replicating within its bacterial host
The new phage particles were carefully isolated and used to infect fresh bacterial cells in the absence of any radioisotopes. Where would you expect to find the 35S radioisotope immediately after infection? A) in the phage ghosts outside the bacterial cells B) incorporated into the bacterial matrix proteins C) incorporated into the bacterial DNA D) inside the bacterial cells, but separate from the bacterial DNA E) inside the bacterial cells, but separate from the bacterial proteins
A florist assembles a bouquet of flowers from the following:
1. lilies, which have long leaves with parallel veins 2. Queen Anne's lace, also known as wild carrot because of its large taproot 3. buttercups, with their five lovely yellow petals 4. new shoots of daisies with two small cotyledons This bunch of flowers contains A) one eudicot and three monocots. B) two eudicots and two monocots. C) three eudicots and one monocot. D) all eudicots and no monocots.