At what phase of the cell cycle does p53 halt cell division if it senses DNA damage?
A. S
B. G2
C. M
D. G0
E. G1
E. G1
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Answer the following statements true (T) or false (F)
1. Unmethylated CpG islands are correlated with inactive genes. 2. Loosely packed chromatin is said to be in an open conformation. 3. Alternative versions of proteins often have similar functions. 4. MicroRNAs increase the rate of mRNA translation.
Which of the following terms is incorrectly matched with the word from which it was derived?
A) Z line-zwischen B) M line-myomesin C) H zone-hell D) I band-irregular E) A band-anisotropic
Why is solar energy considered to be a better option in mitigating climate change?
A. Solar energy is not considered to be a better option for climate change mitigation. B. They absorb greenhouse gases, preventing them from causing heat to be trapped in the earth's atmosphere. C. It releases far less carbon dioxide into the atmosphere compared to burning fossil fuels. D. They absorb the sun's rays, preventing them from heating up the earth.
Water's surface tension and heat storage capacity are accounted for by its
A) orbitals. B) hydrogen bonds. C) mass. D) size.