Which of the following characteristics of protein degradation in eukaryotic cells is not true of protein degradation in bacterial cells?
A. Proteins with an Arg residue at their N-termini have short half-lives.
B. Proteins are degraded by a large, barrel-shaped protease.
C. Proteolysis is ATP dependent in regulated protein degradation.
D. Protein degradation is directed by the covalent attachment of ubiquitin.
D
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In plants and some fungi, individuals that form the diploid generation are called ____
a. spores b. sporophytes c. gametophytes d. spermatozoa e. ova
Your finger touches a hot pot on the stove. Information is carried via ____ neurons to the ____, where it connects to
the ____, which signal you to move your hand.
a. afferent; thalamus; efferent b. efferent; thalamus; afferent c. afferent; spinal cord; efferent d. efferent; spinal cord; afferent e. afferent; somatosensory cortex; efferent
The E. coli lac operon encodes three genes. These genes
a. cleave lactose into glucose and galactose, produce transacetylase, and actively transport lactose into the cell. b. encode for an enzyme that cleaves glucose, a transport protein for active transport, and a transacetylase enzyme for solubilizing lactose in the cytosol. c. encode for an enzyme that cleaves lactose, a transport protein for active transport of lactose, and a transacetylase enzyme whose function is still unknown. d. catalyze the synthesis of lactose from glucose and galactose, produce transacetylase, and actively export lactose from the cell. e. directly interact with the lac repressor and initiate their own transcription.
The ________ [two words] hypothesis for the evolution of virulence states that pathogens may evolve traits that enhance their chances of survival within a host, but that decrease their chances of being spread to a new host
Fill in the blank(s) with correct word