Enzymes known as HATs ______________ histones, while HDACs ______________ histones
A. deacetylate / phosphorylate
B. acetylate / deacetylate
C. deacetylate / acetylate
D. acetylate / hypermethylate
B
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Answer the following statements true (T) or false (F)
1. Plant cell membranes contain cholesterol. 2. Diffusion is the movement of a molecule from an area of high to low concentration. 3. Osmosis describes the movement of water from an area of high to low solute concentration. 4. Movement of molecules down their concentration gradient can drive the movement of a different molecule against its concentration gradient.
The Lotka-Volterra models used for competition may also be used to describe the dynamics of a mutualism by replacing the competition coefficients with positive interaction coefficients
Indicate whether the statement is true or false
Cystic fibrosis is a genetic disorder in homozygous recessives that causes death during the teenage years
If 9 in 10,000 newborn babies have the disease, what are the expected frequencies of the dominant (A1 ) and recessive (A2 ) alleles according to the Hardy-Weinberg model? A) f(A1 ) = 0.9997, f(A2 ) = 0.0003 B) f(A1 ) = 0.9800, f(A2 ) = 0.0200 C) f(A1 ) = 0.9700, f(A2 ) = 0.0300 D) f(A1 ) = 0.9604, f(A2 ) = 0.0392
The primary function of the ___________ is to serve as a storage reservoir for undigested food.
Fill in the blank(s) with the appropriate word(s).