Each nucleosome contains:
A. four proteins: H2A, H2B, H3, and H4
B. a histone octamer composed of two copies of each of the following proteins: H1, H2, H3, and H4
C. a histone octamer composed of two copies of each of the following proteins: H2A, H2B, H3, and H4
D. four proteins: SMC1, SMC2, SMC3, and SMC4
E. a mixture of histone and SMC proteins.
C
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In this simulation, how is respiration rate being measured?
a. CO2 production b. CO2 consumption c. O2 production d. O2 consumption
Plasma proteins are involved in all of the following functions EXCEPT ____
a. transporting wastes b. carrying hydrophilic molecules c. immune response d. blood clotting e. creating osmotic pressure
Which event occurs during the luteal phase of the menstrual cycle?
A. The corpus luteum forms. B. A zona pellucida forms around the oocyte. C. An oocyte completes meiosis I. D. Estrogen levels increase. E. Testosterone levels increase.
Which of the following best describes why mapping is most accurate when genes are close together on a chromosome?
A) Double crossover events yield a result that looks the same as no crossover in a two gene mapping experiment and this throws off the calculations. B) This is not true; relative distance of two loci on a chromosome has no effect on accuracy of mapping. C) Double crossover events yield a result that looks the same as one crossover in a two gene mapping experiment and this throws off the calculations. D) The centromere gets in the way. E) This is not true; mapping genes is most accurate when genes are far away from each other.