Each enzyme normally has specific pH and temperature optima at which they function best.
Answer the following statement true (T) or false (F)
True
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A monomer is to a polymer, as glucose is to
A. lipids. B. carboyhydrates. C. nucleic acids. D. proteins. E. None of the choices are correct.
After a plasmid has been inserted into a section of DNA and hydrogen bonds have formed between complementary bases, what enzyme ensures the DNA fragments are permanently bonded together with covalent bonds?
a. plasmids b. helicase c. ligase d. restriction enzymes
In the process of organismic respiration:a
oxygen is extracted from the environment by the organism and delivered to its cells. b. the citric acid cycle takes place in the cells. c. carbohydrates are broken down and electrons are transferred to oxygen. d. there is an accumulation of lactic acid in the tissues due to the absence of oxygen. e. carbon dioxide is produced in the Krebs cycle
To prevent dehydration, reptiles have
A) scaly skin. B) embryos that lack gills. C) moist, slime-covered skin. D) eggs that contain no water. E) a four-chambered heart.