Which of the following terms are mismatched?
A. corepressor - a protein that binds to the repressor protein and results in inactivation of the operon
B. repressor - protein that is capable of turning off the operon
C. inducer - a protein that inactivates the repressor
D. cAMP - a molecule that accumulates when glucose concentration is low
E. regulatory gene - serves as the on or off switch for the operon
E. regulatory gene - serves as the on or off switch for the operon
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Choose the item in column 2 that best matches each item in column 1.
A) breaking and capping actin B) increase cellular surface area C) assembly and disassembly D) terminal web E) control microtubule organization F) plectin G) central shaft H) nucleating actin branches I) bind to profilin and CapZ J) oligomer formation K) nucleating tubulin branches L) hemidesmosome M) decorate the actin microfilament N) dynein O) prevents loss of subunits P) desmosome Q) nuclear lamina R) account for 10-15% of microtubules S) inhibits microtubule assembly T) two identical polypeptides joined end-to-end U) found in cilia and flagella 1) axonemal microtubules 2) nucleation 3) treadmilling 4) nocodazole 5) motor MAPs 6) Arp2/3 complex 7) myosin subfragment 1 (S1) 8) capping protein 9) gelsolin 10) microvilli 11) filamin 12) polyphosphoinositides 13) nonmotor MAPs 14) axoneme 15) microtubule-associated proteins (MAPs)
In the process of quorum sensing, bacteria release signal molecules in _____ concentration as cell
density _____.
a. increasing; decreases d. decreasing; decreases b. increasing; increases e. a constant; increases c. decreasing; increases
An important functional role of the endocrine system is to
a. provide mechanisms for rapid responses to changes in the body. b. allow for mechanisms to control gene action. c. inhibit nervous system action on muscles and glands. d. maintain a constant, yet dynamic internal fluid environment. e. fight infection.
In the following list, identify the carbohydrate, the fatty acid, the amino acid, and the polypeptide:
a. +NH3-CHR-COO- b. C6H12O6 c. (methionine)20 d. CH3(CH2)16COOH