Which term refers to the diffusion of water through a semipermeable membrane?
A. facilitated diffusion
B. osmosis
C. endocytosis
D. diffusion
E. active transport
Answer: B
You might also like to view...
Elucidation of the histone code might
A. allow us to turn specific genes on or off. B. allow the determination of nucleosome composition. C. lead to chromatin remodeling. D. allow us to control translation.
Which of the following is considered an abiotic component of the ecosystem?
A) temperature B) microbes C) plants D) animals
You see two squirrels fighting over a food resource. This most likely represents
A) scramble competition. B) carrying capacity. C) contest competition. D) interspecific competition.
Thalassemia is a recessive blood disease caused by reduced synthesis of one of the globin genes
While SCD is a mutation in the structure of hemoglobin, thalassemias can also be caused by mutations in the regulatory elements, causing too little globin to be produced and resulting in anemia. You've designed a DNA probe that you want to use to screen a family for a rare mutation in the ?-globin gene that causes thalassemia. First you will use the probe for northern blotting. What information will the northern blot tell you? A) whether the mRNA for ?-globin is being translated into functional proteins in a given cell population B) whether the amount of the ?-globin gene being transcribed (mRNA levels) is within normal range C) the size of the mRNA being transcribed D) the presence of a particular mutation by restriction fragment analysis E) both B and C are correct