#Question id: 4620
#XL - S Microbiology
The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the corresponding bones in whales have very different shapes and proportions. However, genetic data suggest that all three kinds of organisms diverged from a common ancestor at about the same time. Which of the following is the most likely explanation for these data?
#Question id: 27309
#XL - T Zoology
In RNA, nucleotides are joined by which type of bond?
#Question id: 12689
#General Aptitude
#Question id: 1107
#XL - Q Biochemistry
Viagra causes dilation of blood vessels and increased blood flow to the penis, facilitating erection. Viagra acts by inhibiting which of the following events?
#Question id: 2177
#XL - S Microbiology
The resting membrane potential in animal cells depends largely on nongated _____ channels.