About 5% of those with Rubinstein-Taybi syndrome develops cancer as a result to decreased gene expression. This is directly linked to abnormal histone modification caused by a dysfunctional enzyme. What enzyme is this?
A) histone deacetyltransferase (HDAC)
B) histone acetylase (HAT)
C) DNA methyltransferase (DMT)
D) BRCA1
E) No enzyme could cause this as cancer is caused only by direct DNA mutations.
Answer: B
You might also like to view...
Agrobacterium infects plants and causes them to form tumors. You determine that tumor formation requires a large amount of the plant's energy for tissue formation. How might this change the number of offspring a plant produces
, and what is the most likely explanation for this change? A) The number of offspring should increase, because in general, illness increases the reproductive output of organisms. B) The number of offspring should increase, because the bacteria will provide energy for the plant. C) The number of offspring should decrease, because the plant will divert energy from reproduction to tumor formation. D) There should be no effect of infection on offspring production because energy for reproduction is independent of infection.
Mesophelic crenarchaeotes (Thaumarchaeota) have been isolated ________.
A. from marine plankton B. as symbiotes of sea sponges and sea cucumbers C. as pathogens of whales and giant squid D. from rice paddies and lake sediment
In a sperm’s journey out of the body what is
the correct order of structures it encounters either directly or by way of the structure’s secretions? 1. bulbourethral gland 2. vas deferens 3. seminal vesicle 4. epididymus 5. urethra
a. 4-2-1-3-5 b. 4-1-2-3-5 c. 4-2-3-1-5 d. 2-4-3-1-5 e. 2-4-1-3-5
In order to draw attention to their cause, _________________ attack a population's technological infrastructure.
A) ecoterrorists B) cyberterrorists C) doomsday cults D) extremist political groups