Isoenzymes are different enzymes that catalyze the same reaction but can be regulated independently of one another.
Answer the following statement true (T) or false (F)
True
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The cuticle
a. conserves water. b. reduces absorption of carbon dioxide by the plant. c. relegates transpiration to the stomata. d. helps prevent wilting. e. does all of these
Vascular plant cells generally have the ability to differentiate into various types of tissue–a fact long known to horticulturists who propagate plants by cuttings
This means that plants do not display the strict separation of germline and somatic cells that animals do. Might this be expected to accelerate or decelerate evolution in plants relative to animals?
Restriction endonucleases in bacteria may have evolved in order to ________.
A. carry out natural genetic engineering B. use nucleic acids as a food (energy) source C. protect the bacteria from infection by viruses D. All of the choices are correct.
Which sentence best describes fluorescence?
a. A pigment molecule accepts a high-energy electron and releases a photon of energy. b. A high-energy electron leaves its nucleus and moves to a different molecule. c. A high-energy electron returns to its ground state by releasing energy in a photon. d. A low-energy electron moves to a high-energy state by absorbing heat.