When an enzyme becomes denatured, it
(a) increases in effectiveness.
(b) loses its requirement for a substrate.
(c) forms an enzyme–substrate complex.
(d) loses its ability to function.
(d) loses its ability to function.
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A friend of yours visited a natural history museum that had a replica of the Archaeopteryx. She told you the characteristics of Archaeopteryx that she either noticed or read at the display. Which one did she misread?
A. Archaeopteryx had feathers, as do modern birds. B. Archaeopteryx lacked teeth, as do modern birds. C. Archaeopteryx had solid bones, unlike the hollow bones of modern birds. D. Archaeopteryx had wings as do modern birds. E. Archaeopteryx had a long tail, unlike modern birds.
Large-scale screening of blood for the hepatitis B virus uses an assay designed to detect
A. the Delta agent. B. viral surface antigens. C. alanine transaminase. D. the Dane particle.
Endocytosis is a type of _______.
a. passive transport b. facilitated diffusion c. osmosis d. active transport
When the production of glucose exceeds what the body needs, it is stored as _____ or used to synthesize fats
a. urea b. bile c. adipose cells d. glycogen e. amylase